Reliable paging and short message transmission with repetition
By introducing a repeat mechanism for paging PDCCH monitoring timing in the paging timing configuration, the problem of insufficient reliability of paging and short message transmission in wireless communication systems is solved, and stable communication is achieved in interference environments.
Patent Information
- Application Number
- CN202180049315.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Priority Date
- 2021-07-19
- Filing Date
- 2021-07-20
- Publication Date
- 2025-11-18
- Estimated Expiration
- 2041-07-20
AI Technical Summary
Existing wireless communication systems suffer from insufficient reliability during paging and short message transmission, especially during paging, when signal transmission is susceptible to interference and loss.
By introducing a repeat mechanism for paging PDCCH monitoring timing in the paging timing configuration, the base station and user equipment work together to ensure that the same PDCCH signal is sent and received on multiple paging PDCCH monitoring timings, thereby improving transmission reliability.
It improves the reliability of paging and SMS transmission, enhances the signal reception success rate in interference environments, and ensures the stability and reliability of the communication system.
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Figure CN115804177B_ABST
Abstract
Description
[0001] Cross-references to related applications
[0002] This application claims priority to U.S. Application No. 63 / 054,512, filed July 21, 2020, entitled “Reliable Pagging and Short Message Transmission with Repetition”; and U.S. Patent Application No. 17 / 379,685, filed July 19, 2021, entitled “Reliable Pagging and Short Message Transmission with Repetition”, the disclosures of which are incorporated herein by reference in their entirety. Technical Field
[0003] In summary, this disclosure relates to wireless communications, and more specifically, to reliability enhancements for paging and short message physical downlink control channel (PDCCH) transmissions during one or more paging events. Background Technology
[0004] Wireless communication systems are widely deployed to provide a variety of telecommunications services such as telephone, video, data, messaging, and broadcasting. Typical wireless communication systems employ multiple access technologies capable of supporting 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.
[0005] These multiple access technologies have been adopted in various telecommunications standards to provide a common protocol that enables 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 released by the 3rd Generation Partnership Project (3GPP) to meet new requirements associated with latency, reliability, security, scalability (e.g., in the case of 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. Summary of the Invention
[0006] The following is a simplified overview of one or more aspects to provide a basic understanding of such aspects. This overview is not an exhaustive summary of all anticipated aspects and is not intended to identify key or important elements of all aspects, nor to depict 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 a prelude to the more detailed descriptions given later.
[0007] An example implementation includes a method for wireless communication at a user equipment (UE), the method comprising: receiving a paging timing configuration that indicates repetition of a first paging PDCCH monitoring timing by identifying a second paging PDCCH monitoring timing. The method further comprises: decoding signals received on at least one of resources used for the first paging PDCCH monitoring timing or resources used for the second paging PDCCH monitoring timing, based on the paging timing configuration.
[0008] This disclosure also provides: an apparatus (e.g., a UE) including a memory storing computer-executable instructions and at least one processor configured to execute the computer-executable instructions to perform the above method; an apparatus including a unit for performing the above method; and a non-transitory computer-readable medium storing computer-executable instructions for performing the above method.
[0009] One example implementation includes a method for wireless communication at a base station, the method comprising: determining a paging timing configuration that indicates a repetition of a first paging PDCCH monitoring timing by identifying a second paging PDCCH monitoring timing, the first and second paging PDCCH monitoring timings corresponding to the same PDCCH. The method further comprises: transmitting the paging timing configuration to a UE; and transmitting the same PDCCH on resources used for the first paging PDCCH monitoring timing and resources used for the second paging PDCCH monitoring timing based on the paging timing configuration.
[0010] This disclosure also provides: an apparatus (e.g., a base station) including a memory storing computer-executable instructions and at least one processor configured to execute the computer-executable instructions to perform the above method; an apparatus including units for performing the above method; and a non-transitory computer-readable medium storing computer-executable instructions for performing the above method.
[0011] To achieve the foregoing and related objectives, one or more aspects include the features fully described below and specifically pointed out in the claims. The following description and drawings set forth some illustrative features of one or more aspects in detail. However, these features indicate only a few of the various ways in which the principles of each aspect may be employed, and this description is intended to include all such aspects and their equivalents. Attached Figure Description
[0012] Figure 1 This is a diagram illustrating examples of wireless communication systems and access networks according to some aspects of this disclosure.
[0013] Figure 2A This is a diagram illustrating an example of a first 5G / NR frame according to some aspects of this disclosure.
[0014] 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.
[0015] Figure 2C This is a diagram illustrating an example of a second 5G / NR frame according to some aspects of this disclosure.
[0016] 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.
[0017] 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.
[0018] Figure 4 This is a diagram illustrating an example of beamforming between a base station and a UE in an access network according to some aspects of this disclosure.
[0019] Figure 5 This is a diagram illustrating an example of PDCCH monitoring timing for short messages or paging repeats using frequency division multiplexing, according to some aspects of this disclosure.
[0020] Figure 6 This is a diagram illustrating a first example of a time-division multiplexed short message or paging repeat PDCCH monitoring timing, according to some aspects of this disclosure.
[0021] Figure 7 This is a diagram illustrating a second example of the timing of PDCCH monitoring for repeated short messages or paging using time-division multiplexing, according to some aspects of this disclosure.
[0022] Figure 8This is a diagram illustrating example PDCCH monitoring timings based on some aspects of this disclosure.
[0023] Figure 9 This is a diagram illustrating example PDCCH monitoring timing for repeated short messages or paging, according to some aspects of this disclosure.
[0024] Figure 10 This refers to a communication flow between a base station and a UE, based on some aspects of this disclosure, that supports a PDCCH monitoring process for short message PDCCH duplication or paging PDCCH duplication.
[0025] Figure 11 This is a flowchart illustrating an example method performed by a UE according to some aspects of this disclosure, which supports a process for PDCCH monitoring of short message PDCCH duplication or paging PDCCH duplication.
[0026] Figure 12 This is a flowchart illustrating an example method performed by a base station according to some aspects of this disclosure, which supports a process for PDCCH monitoring of short message PDCCH duplication or paging PDCCH duplication. Detailed Implementation
[0027] The detailed description below, taken in conjunction with the accompanying drawings, is intended as a description of various configurations and not as representing only one configuration in which the concepts described herein can be implemented. To provide a thorough understanding of the various concepts, the detailed description includes specific details. However, it will be apparent to those skilled in the art that these concepts can be implemented without these specific details. In some instances, structures and components are shown in block diagram form to avoid obscuring such concepts.
[0028] 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 illustrated in the accompanying drawings, by way of various blocks, components, circuits, processes, algorithms, and other examples (collectively referred to as “elements”). These elements can be implemented using electronic hardware, computer software, or any combination thereof. Whether these elements are implemented as hardware or software depends on the specific application and the design constraints imposed on the overall system.
[0029] For example, an element, or any part of an element, or any combination of elements, can be implemented as a "processing system" that includes 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 functions described throughout this disclosure. One or more processors in a processing system can execute software. Whether referred to as software, firmware, middleware, microcode, hardware description language, or other names, software should be interpreted broadly as meaning instructions, instruction sets, code, code segments, program code, programs, subroutines, software components, applications, software applications, software packages, routines, subroutines, objects, executable files, threads of execution, procedures, functions, and other examples.
[0030] Therefore, in one or more examples, the described functionality can be implemented using hardware, software, or any combination thereof. If implemented in software, the functionality can be stored on a computer-readable medium or encoded as one or more instructions or code on a computer-readable medium. Computer-readable media include computer storage media. Storage media can be any available medium accessible by 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 by a computer.
[0031] In summary, various implementations involve the process of PDCCH monitoring for short message PDCCH repetition or paging PDCCH repetition. In some aspects, the base station sends a paging timing configuration to the UE and, based on the paging timing configuration, sends short messages or paging PDCCH repetitions during multiple paging PDCCH monitoring times. Furthermore, the UE can process data received during paging PDCCH monitoring times based on the paging timing configuration received from the base station.
[0032] Figure 1This diagram illustrates an example of a wireless communication system and access network 100. The wireless communication system (also referred to 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 macro cells (high-power cellular base stations) or small cells (low-power cellular base stations). Macro cells include base stations. Small cells include femtocells, picocells, and microcells.
[0033] In one aspect, one or more UEs 104 may include a paging timing component 140 configured to enable the UE 104 to initiate a short message or paging PDCCH repeat procedure and to properly handle the repeating of PDCCHs corresponding to multiple paging PDCCH monitoring timings. In some aspects, the paging PDCCH monitoring timing may include PDCCH candidates configured for the UE through means of Type 2 Common Search Space (CSS) and pagingSearchSpace signaling parameters.
[0034] For example, the paging timing component 140 can be configured to receive a paging timing configuration from the base station 102 / 180. In some aspects, the paging timing configuration can indicate the type or mode of paging PDCCH monitoring timing for short message or paging repeats. Furthermore, the paging timing component 140 can be configured to receive a PDCCH repeat process activation signal to activate the paging PDCCH repeat process, and to decode signals received on resources used for short message or paging PDCCH repeats during each PDCCH monitoring timing.
[0035] In some aspects, base station 102 / 180 may include a paging timing management (“Mgmt.”) component 198, which is configured to generate a paging timing configuration and send the paging timing configuration to one or more UEs 104. Furthermore, the paging timing management component 198 may be configured to send a PDCCH repetition procedure activation signal to one or more UEs 104, and to send a short message or paging PDCCH according to the short message or paging PDCCH repetition procedure, respectively.
[0036] 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: transmission of user data, radio channel encryption and decryption, 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 device tracking, RAN information management (RIM), paging, location, and delivery of warning messages. Base stations 102 can communicate with each other directly or indirectly (e.g., via EPC 160 or core network 190) via a third backhaul link 134 (e.g., an X2 interface). The third backhaul link 134 can be wired or wireless.
[0037] Base station 102 can communicate wirelessly with UE 104. Each of base stations 102 can provide communication coverage for a corresponding geographic coverage area 110. Overlapping geographic 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 can be referred to as a heterogeneous network. The heterogeneous network may also include evolved home node B (eNB) (HeNB), which can provide services to restricted groups referred to as closed subscriber groups (CSG). The communication link 120 between base station 102 and UE 104 may include an uplink (UL) (also referred to as a reverse link) transmission from UE 104 to base station 102 or a downlink (DL) (also referred to 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. The communication link may be via one or more carriers. Base station 102 / UE 104 may use spectrum allocated per carrier up to Y MHz (e.g., 5, 10, 15, 20, 100, 400 MHz and other examples) of bandwidth in carrier aggregation for transmission in each direction up to a total of Yx MHz (x component carriers). Carriers may be adjacent to each other 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 for 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 carrier may be referred to as the secondary cell (SCell).
[0038] Some UEs 104 can communicate with each other using device-to-device (D2D) communication link 158. D2D communication link 158 can use DL / UL WWAN spectrum. D2D communication link 158 can use one or more sideline channels, such as the Physical Sideline Broadcast Channel (PSBCH), Physical Sideline Discovery Channel (PSDCH), Physical Sideline Shared Channel (PSSCH), and Physical Sideline Control Channel (PSCCH). D2D communication can be achieved through a 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.
[0039] The wireless communication system may also include a Wi-Fi access point (AP) 150 that communicates 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 free channel assessment (CCA) before communication to determine whether the channel is available.
[0040] Small cell 102a can operate in either licensed or unlicensed spectrum. When operating in unlicensed spectrum, small cell 102a can employ NR and use the same 5GHz unlicensed spectrum as the Wi-Fi AP 150. Small cell 102a employing NR in unlicensed spectrum can improve coverage of the access network or increase the capacity of the access network.
[0041] Base station 102 (whether it's a small cell 102a or a large cell (e.g., a macro base station)) may include or be referred to as an eNB, gNodeB (gNB), or another type of base station. Some base stations (such as gNB 180) can operate in one or more frequency bands within the electromagnetic spectrum. The electromagnetic spectrum is typically subdivided into various categories, bands, channels, etc., based on frequency / wavelength. In 5G NR, two initial operating frequency bands have been identified as the frequency range names FR1 (410MHz-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, FR1 is often (interchangeably) referred to as the "below 6GHz" band in various documents and articles. Similar naming issues sometimes arise regarding FR2. Although FR2 is different from the Extremely High Frequency (EHF) band (30GHz-300GHz) which is identified by the International Telecommunication Union (ITU) as the "millimeter wave" (mmW) band, it is often (interchangeably) referred to as the "millimeter wave" band in documents and articles.
[0042] In light of the above, unless otherwise specifically stated, it should be understood that the terms "below 6 GHz" and the like (if used herein) can broadly refer to frequencies that are less than 6 GHz, within FR1, or may include intermediate frequency band frequencies. Furthermore, unless otherwise specifically stated, it should be understood that the terms "millimeter wave" and the like (if used herein) can broadly refer to frequencies that may include intermediate frequency band frequencies, within FR2, or within the EHF band. 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 path loss and short range. The base station 180 and the UE 104 may each include multiple antennas (such as antenna elements, antenna panels, and / or antenna arrays) to facilitate beamforming.
[0043] Base station 180 may transmit beamformed signals to UE 104 in one or more transmit directions 182a. UE 104 may receive beamformed signals from base station 180 in one or more receive directions 182b. UE 104 may also transmit beamformed signals to base station 180 in one or more transmit directions. Base station 180 may receive beamformed signals from UE 104 in one or more receive directions. Base station 180 / UE 104 may perform beam training to determine the optimal receive and transmit directions for each of base station 180 / UE 104. The transmit and receive directions for base station 180 may be the same or different. The transmit and receive directions for UE 104 may be the same or different.
[0044] 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 can communicate with Home Subscriber Server (HSS) 174. MME 162 is the control node that handles signaling between UE 104 and EPC 160. Typically, MME 162 provides bearer and connection management. All user Internet Protocol (IP) packets are transmitted 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-SC 170 can provide services provisioning and delivery for MBMS users. It can act as an entry point for MBMS transmissions by content providers, authorize and initiate MBMS bearer services within a Public Land Mobile Network (PLMN), and schedule MBMS transmissions. The MBMS gateway 168 can distribute MBMS services to base stations 102 belonging to Multicast-Broadcast Single Frequency Network (MBSFN) areas belonging to broadcast-specific services, and can be responsible for session management (start / stop) and collecting billing information related to eMBMS.
[0045] 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 can communicate with Unified Data Management (UDM) 196. AMF 192 is the control node that processes signaling between UE 104 and core network 190. Typically, AMF 192 provides QoS streaming and session management. All user Internet Protocol (IP) packets are transmitted via UPF 195. UPF 195 provides UE IP address allocation and other functions. UPF 195 connects to IP service 197. IP service 197 may include the Internet, intranet, IP Multimedia Subsystem (IMS), PS streaming service, or other IP services.
[0046] A base station may include or be referred to as a gNB, Node B, eNB, access point, base transceiver, radio base station, radio transceiver, transceiver functional unit, basic service set (BSS), extended service set (ESS), transmit / receive point (TRP), or some other suitable term. Base station 102 provides access to EPC 160 or core network 190 for UE 104. Examples of UE 104 include cellular phones, smartphones, Session Initiation Protocol (SIP) phones, laptops, personal digital assistants (PDAs), satellite radio units, global positioning systems, multimedia devices, video devices, digital audio players (e.g., MP3 players), cameras, game consoles, tablet devices, smart devices, wearable devices, vehicles, electricity meters, air pumps, large or small kitchen appliances, healthcare devices, implants, sensors / actuators, displays, or any other similarly functional devices. Some UE 104 devices may be referred to as IoT devices (e.g., parking meters, air pumps, ovens, vehicles, heart monitors, and other examples). UE 104 may also be referred to as a station, mobile station, subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, mobile phone, user agent, mobile client, client, or some other suitable term.
[0047] Although the following description may focus on 5G NR, the concepts described in this article can be applied to other similar areas, such as LTE, LTE-A, CDMA, GSM and other wireless technologies.
[0048] Figures 2A-2D Examples include Figures 200, 230, 250, and 280, which illustrate example structures that can be used for wireless communication (e.g., for 5G NR communication) between base station 102 and UE 104. Figure 2A Figure 200 shows an example of the first subframe within a 5G / NR frame structure. Figure 2B Figure 230 shows an example of a DL channel within a 5G / NR subframe. Figure 2C Figure 250 shows an example of a second subframe within a 5G / NR frame structure. Figure 2D Figure 280 illustrates an example of a UL channel within a 5G / NR subframe. The 5G / NR frame structure can be FDD (where subframes within a specific set of subcarriers (carrier system bandwidth) are dedicated to either DL or UL), or TDD (where subframes within a specific set of subcarriers (carrier system bandwidth) are dedicated to both DL and UL). In the context of... Figure 2A , Figure 2CIn the provided examples, the 5G / NR frame structure is assumed to be TDD, where subframe 4 is configured with slot format 28 (mostly DL), where D is DL, U is UL, and X is flexibly usable between DL and UL, and subframe 3 is configured with slot format 34 (mostly 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). It should be noted that the description given herein also applies to 5G / NR frame structures as TDD.
[0049] Other wireless communication technologies may have different frame structures or different channels. A frame (10 ms) can be divided into 10 equal-sized subframes (1 ms). Each subframe may include one or more time slots. Subframes may also include micro-time slots, which may contain 7, 4, or 2 symbols. Each time slot may contain 7 or 14 symbols, depending on the time slot configuration. For time slot configuration 0, each time slot may contain 14 symbols, while for time slot configuration 1, each time slot may contain 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) Spread Spectrum 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 the numbering scheme. For slot configuration 0, different digital schemes μ0 to μ5 allow 1, 2, 4, 8, 16, and 32 slots per subframe, respectively. For slot configuration 1, different digital schemes 0 to μ2 allow 2, 4, and 8 slots per subframe, respectively. For slot configuration 0 and digital scheme μ, there are 14 symbols / slot and 2... μ Each time slot / subframe. Subcarrier spacing and symbol length / duration are functions of the digital scheme. Subcarrier spacing can be equal to 2. μ *15kHz, where μ is the digital scheme from 0 to 5. Therefore, digital scheme μ = 0 has a subcarrier spacing of 15kHz, and digital scheme μ = 5 has a subcarrier spacing of 480kHz. The symbol length / duration is negatively correlated with the subcarrier spacing. Figures 2A-2DExamples are provided for slot configuration 0 with 14 symbols per slot and digital scheme μ=0 with 1 slot per subframe. The subcarrier spacing is 15 kHz and the symbol duration is approximately 66.7 μs.
[0050] A resource grid can be used to represent the frame structure. Each time slot includes a resource block (RB) (also known as a physical RB (PRB)), which extends 12 consecutive subcarriers. The resource grid is divided into multiple resource elements (REs). The number of bits carried by each RE depends on the modulation scheme.
[0051] like Figure 2A As shown, some of the REs carry reference (pilot) signals (RS) for the UE. The RS may include a demodulated RS (DM-RS) for channel estimation at the UE (indicated as R for a specific 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).
[0052] Figure 2B Examples of various DL channels within a subframe of a frame are shown. The Physical Downlink Control Channel (PDCCH) carries the DCI within one or more CCEs, each CCE comprising nine RE groups (REGs), each REG comprising four consecutive REs in an OFDM symbol. The Primary Synchronization Signal (PSS) may be 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 identification. The Secondary Synchronization Signal (SSS) may be located within symbol 4 of a specific subframe of the frame. The SSS is used by the UE to determine the Physical Layer Cell Identifier Group Number and radio frame timing. Based on the Physical Layer Identifier and Physical Layer Cell Identifier 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) (which carries the Master Information Block (MIB)) may 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 (e.g., System Information Block (SIB)) that is not transmitted via the PBCH, and paging messages.
[0053] like Figure 2CAs shown, some REs in the RE array 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 one or two symbols preceding the PUSCH. In different configurations, the PUCCH DM-RS can be transmitted depending on whether a short or long PUCCH is transmitted and the specific PUCCH format used. Although not shown, the UE can transmit a Sounding Reference Signal (SRS). The SRS can be used by the base station for channel quality estimation to enable frequency-dependent scheduling on the UL.
[0054] Figure 2D Examples of various UL channels within a subframe of a frame are shown. The PUCCH can be positioned 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 HARQ ACK / NACK feedback. The PUSCH carries data and can also be used to carry buffer status reports (BSR), power headroom reports (PHR), or UCI.
[0055] Figure 3This is a block diagram illustrating communication between base station 102 / 180 and UE 104 in the access network. In the DL, IP packets from EPC160 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 Service 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 (e.g., MIB, SIB), RRC connection control (e.g., RRC connection paging, RRC connection establishment, RRC connection modification, and RRC connection release), inter-Radio Access Technology (RAT) mobility, and measurement configuration for UE measurement reporting; PDCP layer functionality associated with: header compression / decompression, security (encryption, decryption, integrity protection, integrity verification), and handover support functions; RLC layer functionality associated with: transmission of upper-layer packet data units (PDUs), 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 of MAC SDUs to transport blocks (TBs), and MAC... SDU performs demultiplexing of TB, scheduling information reporting, error correction via HARQ, priority processing, and logical channel prioritization.
[0056] Transmit (TX) processor 316 and receive (RX) processor 370 implement Layer 1 functionality associated with various signal processing functions. Layer 1 (which includes the physical (PHY) layer) may include error detection on the transport channel, forward error correction (FEC) encoding / 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 diagram based on various modulation schemes (e.g., binary phase shift keying (BPSK), quadrature phase shift keying (QPSK), M-phase shift keying (M-PSK), M-quadrature amplitude modulation (M-QAM)). The encoded and modulated symbols can then be split into parallel streams. Each stream can then be mapped to OFDM subcarriers, multiplexed with a reference signal (e.g., a pilot) in the time or frequency domain, and then combined using an inverse fast Fourier transform (IFFT) to produce a physical channel carrying a stream of time-domain OFDM symbols. The OFDM stream is spatially precoded to generate multiple spatial streams. The channel estimate from channel estimator 374 can be used to determine the coding and modulation scheme, as well as for spatial processing. The channel estimate can be derived based on 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.
[0057] At UE 104, each receiver 354RX receives signals via its respective 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 this information to recover any spatial stream destined for UE 104. If multiple spatial streams are destined for UE 104, the RX processor 356 can combine the multiple spatial streams 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 includes a separate OFDM symbol stream for each subcarrier of the OFDM signal. The symbols and reference signals on each subcarrier are recovered and demodulated by determining the most probable signal constellation points transmitted by base stations 102 / 180. These soft decisions can be based on channel estimates calculated by the channel estimator 358. The soft decision is then decoded and deinterleaved to recover the data and control signals originally transmitted by base station 102 / 180 on the physical channel. This data and control signals are then provided to controller / processor 359, which implements layer 3 and layer 2 functionality.
[0058] 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, packet reassembly, decryption, header decompression, and control signal processing between transport and logical channels to recover IP packets from the EPC 160. The controller / processor 359 is also responsible for error detection to support HARQ operation using ACK or NACK protocols.
[0059] 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 connection, and measurement reporting; PDCP layer functionality associated with: header compression / decompression, and security (encryption, decryption, integrity protection, integrity verification); RLC layer functionality associated with: transmission of upper-layer PDUs, 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 of MAC SDUs to TBs, demultiplexing of MAC SDUs from TBs, scheduling information reporting, error correction via HARQ, priority processing, and logical channel prioritization.
[0060] The TX processor 368 can use the channel estimate derived by the channel estimator 358 based on the reference signal or feedback transmitted by the base station 102 / 180 to select an appropriate coding and modulation scheme and facilitate spatial processing. The spatial stream generated by the TX processor 368 can be provided to different antennas 352 via individual transmitters 354TX. Each transmitter 354TX can use the corresponding spatial stream to modulate the RF carrier for transmission.
[0061] At base station 102 / 180, UL transmission is processed in a manner similar to that described in conjunction with the receiver function at UE 104. Each receiver 318RX receives signals through its respective antenna 320. Each receiver 318RX recovers the information modulated onto the RF carrier and provides that information to the RX processor 370.
[0062] 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, packet reassembly, decryption, header decompression, and control signal processing between transport and logical channels to recover IP packets from the UE 104. IP packets from the controller / processor 375 can be provided to the EPC 160. The controller / processor 375 is also responsible for error detection to support HARQ operation using ACK or NACK protocols.
[0063] 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 paging timing component 140 is related to various aspects.
[0064] 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 paging timing management component 198 is related to various aspects.
[0065] As described herein, UE 104 can connect to base station 102 in a 5G NR network. Furthermore, UE 104 can operate in an inactive mode, in which UE 104 monitors the paging channel in response to short messages or paging messages from base station 102. For example, UE 104 can monitor the paging channel in response to short message PDCCHs or paging PDCCHs. Base station 102 can transmit PDCCHs on PDCCH candidates in a control resource set (CORESET). A CORESET can be a set of physical resources within the downlink resource grid where the PDCCH is transmitted. The information carried by the PDCCH can be referred to as downlink control information (DCI), and this information can be mapped to physical resources in cells called control channel elements (CCEs).
[0066] Typically, short messages (SMS) have been used to indicate system information updates or implement public warning system functions, while paging messages have been used to schedule paging messages (i.e., PDSCH). However, recent advancements in NR have relied on SMS and paging messages to implement various enhancements and advanced functions; for example, SMS has been used to indicate enhanced power consumption modes. Therefore, when UE104 encounters problems capturing and decoding SMS or paging messages, the reliability and robustness of NR may be affected.
[0067] For example, wireless communication between UE 104 and base station 102 may involve beamforming. Beam reliability can be affected by various factors, such as narrow beam weakening or partial shadowing. Therefore, base station 102 may transmit short message or paging PDCCH repetitions per SSB to alleviate coverage issues and assist UE 104 in successfully receiving short message or paging PDCCHs. The transmission of short message or paging PDCCH repetitions at multiple paging monitoring times can be referred to as a “paging PDCCH repetition” or “short message and paging PDCCH repetition” process, and improves PDCCH reception for a single UE 104 or a group of UEs 104 that may be affected by weak or degraded beams by providing the UE 104 or multiple UEs 104 with additional opportunities to decode PDCCHs via multiple monitoring times, and / or enabling the UE 104 or multiple UEs 104 to decode and combine PDCCH information from more than one monitoring time.
[0068] More specifically, broadly speaking, various implementations involve a process for monitoring PDCCH repetition or paging PDCCH repetition. In some aspects, base station 102 sends a paging timing configuration to UE 104 and, based on the paging timing configuration, sends repetitions of short messages or paging PDCCHs in multiple paging PDCCH monitoring times. Furthermore, UE 104 can monitor each repetition of short message or paging PDCCHs and process data received during a monitoring time based on the paging timing configuration received from base station 102. In some examples, base station 102 sends a PDCCH repetition process activation signal to activate multiple monitoring times for short message or paging PDCCH repetition at UE 104. In some examples, the PDCCH repetition process activation signal may be a radio resource control (RRC) configuration message including an activation indication, a media access control (MAC) control element (CE) including an activation signal, UE-specific downlink control information (DCI) including an activation signal, or a group common DCI including an activation signal.
[0069] Figure 4 A diagram illustrating an example of beamforming 400 between a base station 402 (e.g., base station 102 / 180) and a UE 404 (e.g., UE 104) in an access network, according to some aspects of this disclosure, is shown. Figure 4As shown, base station 402 can transmit signals to UE 404 in each of multiple directions using corresponding transmit beams 406(1)-(8). Furthermore, UE 404 can receive signals from base station 402 using different receive beams 408(1)-(4). UE 404 can also transmit signals to base station 402 in one or more directions using different beams. Additionally, base station 402 can receive signals from UE 404 in one or more receive directions using one or more beams.
[0070] Base station 402 and UE 404 can perform beam training to determine the optimal receive and transmit directions for each of base station 402 and UE 404. The transmit and receive directions of base station 402 may be the same or different. The transmit and receive directions of UE 404 may be the same or different. Base station 402 may use the same or related beams to transmit communication to multiple UEs 404. For example, base station 402 may use different beams to exchange communication with UE 404. Base station 402 may provide reference signals to UE 404 so that UE 404 can perform further refined selection of beam pairs 406(1) / 408(1), 406(3) / 408(3), and 406(4) / 408(4) based on measurements performed on these signals.
[0071] In some situations, short message or paging PDCCH messages may not be received correctly, which could delay or prevent UE 404 from receiving control information in the PDCCH and other communications (e.g., via PDSCH) that exchange data with base station 402. For example, passing vehicles or other moving structures may cause interference, attenuation, or blockage to the UE group. In many cases, a wider beam is used to transmit short messages and paging PDCCH. However, the use of a wider beam usually comes with a sacrifice in coverage (e.g., distance or cell radius).
[0072] As described herein, base station 402 can mitigate coverage issues by sending short messages or paged PDCCHs using a paging PDCCH repetition procedure, which involves repetition of PDCCHs at multiple monitoring points. The aspects presented herein enable base station 402 to improve transmission reliability by enhancing the robustness of the PDCCH decoding process performed by UE 404 via the paging PDCCH repetition procedure.
[0073] Base station 402 may include paging timing management component 198, such as combined with Figure 1The paging timing management component 198 may include a short message and paging repeat component 410, which can manage paging PDCCH monitoring timings corresponding to the same SSB. In other words, the paging timing management component 198, operating the short message and paging repeat component 410, can manage the performance of the PDCCH repeating mode. For example, the paging timing management component 198 can generate a paging timing configuration that indicates the repeating of a first paging PDCCH monitoring timing by identifying one or more corresponding paging physical downlink control channel (PDCCH) monitoring timings. In some aspects, the paging timing configuration may indicate the type of repeating performed during the PDCCH repeating mode, the repeating mode implemented during the PDCCH repeating mode, and / or the period of repeating paging PDCCH monitoring timings during the PDCCH repeating mode. In addition, the paging timing configuration may indicate whether the repeating paging PDCCH monitoring timing corresponds to a PDCCH associated with a PDSCH timing. Furthermore, this indication may take the form of one or more parameters included in system information, downlink control information, paging search space information, etc. The paging timing configuration can be provided to UE 404 semi-statically or dynamically. For example, the paging timing management component 198 can semi-statically provide an indication of the paging PDCCH repeating process by generating a System Information Block (SIB) (e.g., SIB type 1) identifying the first paging PDCCH monitoring timing and the second paging PDCCH monitoring timing, and send the SIB to UE 404. In some other cases, the paging timing management component 198 can dynamically provide an indication of the paging PDCCH repeating process by generating a short message identifying the first paging PDCCH monitoring timing and the second paging PDCCH monitoring timing, and send the short message to UE 104.
[0074] Furthermore, the paging timing management component 198 can send a PDCCH repeat process activation signal indicating the initiation of a paging PDCCH repeat process and a PDCCH repeat process deactivation signal indicating the termination of a paging PDCCH repeat process. In some aspects, the PDCCH repeat process activation signal may be a short message including an activation indication, an SIB including an activation indication, an RRC configuration message including an activation indication, a MAC CE including an activation indication, a UE-specific DCI including an activation indication, or a group common DCI including an activation indication. The PDCCH repeat process deactivation signal may be a short message including a deactivation indication, an SIB including a deactivation indication, an RRC configuration message including a deactivation indication, a MAC CE including a deactivation indication, a UE-specific DCI including a deactivation indication, or a group common DCI including a deactivation indication.
[0075] Base station 402 may determine to send a PDCCH repetition procedure activation signal based on one or more of the following: Channel State Information (CSI) received from at least one UE 404 in the group of UEs 404, a quality measurement for at least one UE 404 in the group of UEs 404, or a Hybrid Automatic Repeat Request (HARQ) feedback from at least one UE 404 in the group of UEs 404. For example, base station 402 may have previously received Channel State Information, a quality measurement, or HARQ feedback from another UE (e.g., a UE from the group of UEs 404) and determine to send a PDCCH repetition procedure activation signal to UE 404 based on that previously received information, measurement, or feedback. Base station 402 may instruct paging PDCCH repetition procedures for all search spaces or subsets of search spaces in the group of UEs 404. Additionally, base station 402 may configure whether to activate the paging PDCCH repetition procedure individually for each search space corresponding to an SSB.
[0076] UE 404 may each include a paging timing component 140, such as combined Figure 1 Described. For example... Figure 4 As shown, the paging timing component 140 may include a decoding component 412 for decoding and processing repeated paging PDCCH monitoring opportunities based on paging timing configurations. For example, the paging timing component 140 operating the decoding component 412 may be configured to receive a paging timing configuration via one or more other paging PDCCH monitoring opportunities that indicate the repetition of the paging PDCCH monitoring opportunity, wherein the one or more other paging PDCCH monitoring opportunities are configured to correspond to the same SSB as the paging PDCCH monitoring opportunity. Additionally, the paging timing component 140 may be configured to receive a PDCCH repetition process activation signal from the base station 402, monitor the same PDCCH on the paging PDCCH monitoring opportunity and one or more other paging PDCCH monitoring opportunities, and decode signals received on resources during the paging PDCCH monitoring opportunity and one or more other paging PDCCH monitoring opportunities.
[0077] During the paging PDCCH repetition process, base station 402 can send a short message or the initial transmission of the paging PDCCH, and can repeat the PDCCH transmission, such that the same PDCCH is repeated at two or more paging PDCCH monitoring times. For example, the same PDCCH can be repeatedly sent on PDCCH candidates (e.g., in the same search space and with the same PDCCH candidate index) at multiple paging monitoring times.
[0078] In some aspects, for example, such as regarding Figure 5As described, base station 402 can transmit the same PDCCH within the same frequency region (e.g., NR bandwidth portion) in the frequency division multiplexing mode for both the first paging PDCCH monitoring timing and the second paging PDCCH monitoring timing. In some other aspects, for example, as per [the description of]... Figure 6 As described, base station 402 can transmit the same PDCCH within the monitoring time slot of the time-division multiplexing mode for both the first paging PDCCH monitoring timing and the second paging PDCCH monitoring timing. In some other aspects, for example, as per [the description of]... Figure 7 As described, base station 402 can transmit the same PDCCH for the first paging PDCCH monitoring timing in the first monitoring time slot of the time-division multiplexing mode, and transmit the same PDCCH for the second paging PDCCH monitoring timing in the second monitoring time slot of the time-division multiplexing mode. In some other aspects, for example, as per [the description of]... Figure 9 As described, base station 402 can transmit multiple repetition patterns, each of which includes multiple paging PDCCH monitoring opportunities. Furthermore, each repetition pattern can correspond to a different SSB.
[0079] Figure 5 Figure 500 illustrates an example of PDCCH monitoring timing for short messages or paging repeats using frequency division multiplexing, according to some aspects of this disclosure. Figure 5 As shown, in PDCCH repetition mode, base station 402 can transmit PDCCH 510 during the conventional paging PDCCH monitoring period 512 and PDCCH 520 during the auxiliary paging PDCCH monitoring period 522, according to the frequency division multiplexing scheme. Given that PDCCH 520 is a repetition of PDCCH 510, both PDCCH 510 and PDCCH 520 can be configured as paging PDCCHs for scheduling PDSCH 530. Alternatively, both PDCCH 510 and PDCCH 520 can be configured as short message PDCCHs with similar payloads.
[0080] like Figure 5 Furthermore, as shown, in standard mode, PDCCH 510 can be transmitted within the initial frequency region (e.g., initial bandwidth portion 540). Additionally, in PDCCH repetition mode, the initial frequency region can be extended to form an extended frequency region (e.g., extended bandwidth portion 542). Furthermore, as... Figure 5 As shown, in PDCCH repetition mode, both PDCCH 510 and PDCCH 520 can be transmitted within the extended frequency region (e.g., extended bandwidth portion 542). Therefore, in some examples, UE 404 in PDCCH repetition mode can extend the bandwidth monitored by the UE from the initial bandwidth portion 540 to the extended bandwidth portion 542.
[0081] Figure 6 Figure 600 is a first example illustrating the timing of PDCCH monitoring for repeated short messages or paging using time-division multiplexing, according to some aspects of this disclosure. Figure 6 As shown, in PDCCH repetition mode, base station 402 can transmit PDCCH 610 during the traditional paging PDCCH monitoring period 612 and PDCCH 620 during the auxiliary paging PDCCH monitoring period 622, according to a time-division multiplexing scheme. Given that PDCCH 620 is a repetition of PDCCH 610, both PDCCH 610 and PDCCH 620 can be configured as paging PDCCHs for scheduling PDSCH 630. Alternatively, both PDCCH 610 and PDCCH 620 can be configured as short message PDCCHs with similar payloads. Furthermore, as... Figure 6 As further shown, in PDCCH repeat mode, PDCCH 610, PDCCH 620 and PDSCH 630 can be transmitted within the same time monitoring slot 640.
[0082] Figure 7 Figure 700 is a second example illustrating the timing of PDCCH monitoring for repeated short messages or paging using time-division multiplexing, according to some aspects of this disclosure. Figure 7 As shown, in PDCCH repetition mode, base station 402 can transmit PDCCH 710 during the traditional paging PDCCH monitoring period 712 and PDCCH 720 during the auxiliary paging PDCCH monitoring period 722, according to a time-division multiplexing scheme. Given that PDCCH 720 is a repetition of PDCCH 710, both PDCCH 710 and PDCCH 720 can be configured as paging PDCCHs for scheduling PDSCH 730. Alternatively, both PDCCH 710 and PDCCH 720 can be configured as short message PDCCHs with similar payloads. Furthermore, as... Figure 7 As further shown, in PDCCH repetition mode, PDCCH 710 and PDSCH 730 can be sent in the first time monitoring slot 740, while PDCCH candidate 720 can be sent in the second time monitoring slot 750.
[0083] Figure 8 Figure 800 illustrates example PDCCH monitoring timings according to some aspects of this disclosure. Figure 8As shown, multiple SSBs 810(1)-(N) (e.g., SSB bursts) can be associated with multiple paging times 812(1)-(N), each paging time 812 including a set of monitoring times. For example, paging time 812(1) can include a set of monitoring times 814(1)-(N). Each individual set of monitoring times 814 can include a single monitoring time 816(1)-(N). For example, a first set of monitoring times 814(1) can include multiple monitoring times 816(1)-(N). In some aspects, the number of monitoring times in the multiple monitoring times 816(1)-(N) can be equal to the number of SSBs in the multiple SSBs 810(1)-(N). Furthermore, each monitoring time 816 can correspond to an SSB 810. For example, a base station 402 operating in standard mode may transmit a PDCCH corresponding to SSB 810(1) during monitoring time 816(1) in the first set of monitoring times 814(1), and transmit a PDCCH corresponding to SSB 810(N) during monitoring time 816(N) in the first set of monitoring times 814(1), etc.
[0084] Figure 9 This is a diagram illustrating examples of PDCCH monitoring timing for repeated short messages or paging, according to some aspects of this disclosure. (See diagram for example.) Figure 9 As shown, multiple SSBs 910(1)-(N) (e.g., SSB bursts) may be associated with a first paging opportunity 912(1), which includes one or more sets of monitoring opportunities 914(1)-(N). Each individual set of monitoring opportunities 914 may include a single monitoring opportunity. For example, the first set of monitoring opportunities 914(1) may include multiple monitoring opportunities 916(1)-(N). In some aspects, the number of monitoring opportunities in the set of monitoring opportunities 916(1)-(N) may be equal to the number of SSBs in the multiple SSBs 910(1)-(N) and the number of sets of monitoring opportunities 914(1)-(N). Furthermore, each set of monitoring opportunities 914 may correspond to an SSB 910. For example, a base station 402 operating in PDCCH repetition mode can repeatedly send short messages or paged PDCCHs 916(1)-(N) corresponding to the first SSB 910(1) during the first set 914(1) of monitoring time, and send short messages or paged PDCCHs 918(1)-(N) corresponding to the Nth SSB 910(N) during the Nth set 914(N) of monitoring time, etc. Therefore, a base station operating in PDCCH repetition mode can send short messages or paged PDCCHs corresponding to SSB 910(1) during monitoring time 916(1)-(N).
[0085] Figure 10 This disclosure describes a communication flow 1000 between a base station 1002 (e.g., base station 402) and a UE 1004 (e.g., UE 404) that monitors PDCCH monitoring timing for short message or paging PDCCH repetitions, according to some aspects of the disclosure. In this example, base station 1002 sends a paging timing configuration 1006 to UE 1004. Alternatively, in some examples, different mechanisms may be used to pre-configure UE 1004 with the paging timing configuration 1006. The paging timing configuration 1006 can indicate the repetition of paging PDCCH monitoring timings by identifying multiple paging PDCCH monitoring timings corresponding to the paging PDCCH monitoring timings. In some aspects, the paging timing configuration 1006 can be a parameter indicating the type of repetition, the repetition pattern, and / or timing information used for the repetition. Furthermore, UE 1004 can use this parameter to determine when to monitor the paging PDCCH or short message PDCCH. Additionally, the paging timing configuration 1006 can indicate whether multiple paging PDCCH monitoring times correspond to a PDCCH associated with a PDSCH timing. Multiple paging PDCCH monitoring times can be used to schedule the same PDSCH, or multiple paging PDCCH monitoring times can be used to schedule different PDSCH timings. In some examples, on the UE side 1004, the paging PDCCH repetition process can include monitoring the same PDCCH on multiple PDCCH candidates in multiple monitoring times within the same search space. In some other examples, on the UE side, the paging PDCCH repetition process can include monitoring the same PDCCH on multiple PDCCH candidates in multiple monitoring times within different search spaces.
[0086] Furthermore, base station 1002 may send a PDCCH repeat process activation signal 1008 that includes an indication of the PDCCH monitoring process. In some aspects, the indication in the PDCCH repeat process activation signal 1008 indicates the activation, deactivation, or continuation of the paging PDCCH repeat process for paging PDCCH monitoring. In some aspects, the PDCCH repeat process activation signal 1008 may be a short message including an activation indication, an SIB including an activation indication, an RRC configuration message including an activation indication, a MAC CE including an activation indication, a UE DCI including an activation indication, or a group common DCI including an activation indication.
[0087] At box 1010, UE 1004 can monitor PDCCH based on the paging PDCCH repeating process. For example, if the PDCCH repeating process activation signal 1008 activates, enables, or continues the paging PDCCH repeating process, UE 1004 can monitor the short message or paging PDCCH based on the paging PDCCH repeating process and paging timing configuration 1006.
[0088] Base station 1002 can send multiple short messages or paging PDCCH 1012(1)-(N) to UE 1004 at multiple monitoring times based on paging timing configuration 1006. In some aspects, base station 1002 can send multiple short messages or paging PDCCH 1012(1)-(N) in the same frequency area for one or more monitoring time pairs using frequency division multiplexing modes. For example, base station 1002 can send short messages or paging PDCCH 1012(1)-(2) in the same frequency area for a first paging PDCCH monitoring time and a second paging PDCCH monitoring time. Therefore, UE 1004 can monitor the first paging PDCCH monitoring time and the second paging PDCCH monitoring time in the same frequency area based on paging timing configuration 1006. In addition, in some aspects, the first paging PDCCH monitoring time and the second monitoring time can be counted as one for the number of counts for blind decoding and the CCE per time slot.
[0089] In some other aspects, base station 1002 can pair paging PDCCH monitoring opportunities within the time monitoring slots of time division multiplexing mode, and send short messages or paging PDCCH 1012(1)-(N) during the paired monitoring opportunities. For example, base station 1002 can send short messages or paging PDCCH 1012(1)-(2) within the same monitoring slot for the first paging PDCCH monitoring opportunity and the second paging PDCCH monitoring opportunity. Therefore, UE 1004 can monitor the first paging PDCCH monitoring opportunity and the second paging PDCCH monitoring opportunity within the same monitoring slot based on paging opportunity configuration 1006. In addition, in some aspects, the first paging PDCCH monitoring opportunity and the second monitoring opportunity can be counted as one for the number of blind decoding counts and the CCE per slot.
[0090] In some other aspects, base station 1002 can pair paging PDCCH monitoring opportunities in different time monitoring slots of time division multiplexing mode, and send short messages or paging PDCCH 1012(1)-(2) during the paired monitoring opportunities. For example, base station 1002 can send short messages or paging PDCCH 1012(1) for a first paging PDCCH monitoring opportunity in a first monitoring slot of time division multiplexing mode, and send short messages or paging PDCCH 1012(2) for a second paging PDCCH monitoring opportunity in a second monitoring slot of time division multiplexing mode. Therefore, UE 1004 can monitor the first paging PDCCH monitoring opportunity in the first monitoring slot and the second paging PDCCH monitoring opportunity in the second monitoring slot based on paging opportunity configuration 1006. In addition, in some aspects, the first paging PDCCH monitoring opportunity and the second monitoring opportunity can be counted as one for the number of counts for blind decoding and the CCE per slot.
[0091] In some other aspects, base station 1002 can group short messages and paging PDCCH 1012(1)-(N) according to the corresponding SSB, and send each group of short messages and paging PDCCH during multiple consecutive paging PDCCH monitoring periods. For example, base station 1002 can identify that short messages and paging PDCCH 1012(1)-(6) correspond to a first SSB, and send short messages and paging PDCCH 1012(1)-(6) during a first multiple paging period of the monitoring period (i.e., the first repetition pattern), and identify that short messages and paging PDCCH 1012(7)-(12) correspond to a second SSB, and send short messages and paging PDCCH 1012(7)-(12) during a second multiple paging period of the monitoring period (i.e., the second repetition pattern).
[0092] Furthermore, at block 1010, UE 1004 can decode resources based on paging timing configuration 1006. Additionally, in some examples, base station 1002 can send a PDCCH repetition deactivation signal 1016, which includes an indication of deactivation of the paging PDCCH repetition process used for PDCCH monitoring. In response to receiving such a deactivation indication, at block 1018, UE 1004 can stop monitoring PDCCH based on the paging PDCCH repetition process. In some aspects, the PDCCH repetition deactivation signal 1016 can be a short message including a deactivation indication, an SIB including an activation indication, an RRC configuration message including a deactivation indication, a MAC CE including a deactivation indication, a UE-specific DCI including a deactivation indication, or a group common DCI including a deactivation indication. Alternatively, in some examples, in box 1010, UE 1004 may stop monitoring PDCCH based on the paging PDCCH repeating process after the timer for the PDCCH repeating process used for PDCCH monitoring expires.
[0093] Furthermore, after deactivating the paging PDCCH repetition process for PDCCH, base station 1002 can send a second PDCCH 1020 without a paging PDCCH repetition process. The PDCCH 1020 can be sent without repetition, and the process of monitoring PDCCH 1020 can be referred to as a "regular PDCCH monitoring" process.
[0094] Figure 11 This is a flowchart of a method 1100 for detecting duplicate PDCCHs in short messages or paging PDCCHs. This method can be performed by a UE (e.g., Figure 1 and Figure 3 The UE 104 may include a memory 360 and may be the entire UE 104 or components of the UE 104, such as a paging timing component 140, a TX processor 368, an RX processor 356 and / or a controller / processor 359. Figure 4 UE 404; and / or Figure 10 Execution of UE 1004).
[0095] At block 1102, method 1100 includes receiving a paging timing configuration that indicates the repetition of a first paging PDCCH monitoring timing by identifying a second paging physical downlink control channel (PDCCH) monitoring timing. For example, paging timing component 140 may receive paging timing configuration 1006. Furthermore, paging timing configuration 1006 may indicate the type of repetition performed during a PDCCH repetition mode, the repetition mode implemented during a PDCCH repetition mode, and / or the period of repeated paging PDCCH monitoring timings during a PDCCH repetition mode.
[0096] Additionally, the paging timing configuration 1006 may be provided to the UE 1004 semi-statically (e.g., via an SIB) or dynamically (e.g., via a short message). In some aspects, the paging timing configuration 1006 may include an SIB identifying a first paging PDCCH monitoring timing and a second paging PDCCH monitoring timing. For example, the paging timing configuration 1006 may identify a first repetition pattern and a second repetition pattern of multiple PDCCH monitoring timings, the first repetition pattern including a first paging PDCCH monitoring timing followed by a second paging PDCCH monitoring timing. Furthermore, the first repetition pattern may be associated with a first SSB, and the second repetition pattern may be associated with a second SSB. In some other aspects, the paging timing configuration 1006 may include a short message identifying a first paging PDCCH monitoring timing and a second paging PDCCH monitoring timing.
[0097] Furthermore, in some aspects, the paging timing configuration 1006 may include a mapping type indicator that identifies the first paging PDCCH monitoring timing and the second paging PDCCH monitoring timing as being associated with PDCCH candidates mapped to the same plurality of control channel elements. Alternatively, in some aspects, the paging timing configuration 1006 may include a mapping type indicator that identifies the first paging PDCCH monitoring timing and the second paging PDCCH monitoring timing as being associated with independently mapped PDCCH candidates.
[0098] Therefore, UE 104, UE 404, UE 1004, TX processor 368, RX processor 356 and / or controller / processor 359 of the paging timing component 140 can provide a unit for receiving a paging timing configuration that indicates the repetition of the first paging PDCCH monitoring timing by identifying a second paging PDCCH monitoring timing.
[0099] At block 1104, method 1100 may optionally include receiving a PDCCH repeat procedure activation signal to activate multiple monitoring opportunities for short message PDCCH repeat or paging PDCCH repeat at UE 1004. For example, paging timing component 140 may receive a PDCCH repeat procedure activation signal 1008 indicating that a PDCCH repeat mode is initiated by base station 1002. In some aspects, the PDCCH repeat procedure activation signal 1008 may be an RRC configuration message including an activation indication, a MAC CE including an activation signal, a UE-specific DCI including an activation signal, or a group common DCI including an activation signal.
[0100] Therefore, UE 104, UE 404, UE 1004, TX processor 368, RX processor 356 and / or controller / processor 359 of the paging timing component 140 can provide a unit for receiving the PDCCH repeat process activation signal to activate the paging PDCCH repeat process.
[0101] At block 1106, method 1100 may include: decoding a signal received on at least one of a resource for a first paging PDCCH monitoring timing or a resource for a second paging PDCCH monitoring timing, based on paging timing configuration.
[0102] For example, UE 1004 may monitor the first paging PDCCH monitoring timing 512 and the second paging PDCCH monitoring timing 522 within the same frequency region (i.e., the extended bandwidth portion 542) based on paging timing configuration 1006. In another example, UE 1004 may monitor the first paging PDCCH monitoring timing 612 and the second paging PDCCH monitoring timing 622 within the same monitoring slot 640 based on paging timing configuration 1006. In another example, UE 1004 may monitor the first paging PDCCH monitoring timing 712 in the first monitoring slot 740 and the second paging PDCCH monitoring timing 722 in the second monitoring slot 750 based on paging timing configuration 1006. In yet another example, UE 1004 may monitor one or more repetition patterns 914(1)-(N) of paging PDCCH monitoring timing based on paging timing configuration 1006. Furthermore, UE 1004 may receive one or more CORESETs during paging PDCCH monitoring events (e.g., paging PDCCH monitoring events 512, 522, 612, 622, 712, 722, 916(1)-(N) and 918(1)-(N)). Additionally, decoding component 412 may decode the CORESETs to obtain PDCCH 1012(1)-(N).
[0103] In some aspects, the initial paging PDCCH monitoring timing (e.g., paging PDCCH monitoring timings 512, 612, and 712) may have the same quasi-co-location (QCL) assumption as the repeated paging PDCCH monitoring timings (e.g., paging PDCCH monitoring timings 522, 622, and 722). For example, UE 1004 may monitor the first paging PDCCH monitoring timing and the second paging PDCCH monitoring timing based on paging timing configuration 1006 in association with the same quasi-co-location assumption as the SSB of base station 1002.
[0104] In some respects, the initial paging PDCCH monitoring timing can be the same as the repeated paging PDCCH monitoring timing. For example, the first paging PDCCH monitoring timing (e.g., paging PDCCH monitoring timings 512, 612, and 712) and the second paging PDCCH monitoring timing (e.g., paging PDCCH monitoring timings 522, 622, and 722) can be associated with the same number of CCEs or CORESETs for the same duration.
[0105] In some aspects, UE 1004 may combine PDCCH 1012(1) received during the first paging PDCCH monitoring period and PDCCH 1012(2) received during the second paging PDCCH monitoring period to form a combined PDCCH. Furthermore, decoding the signal may include decoding the combined PDCCH.
[0106] Therefore, UE 104, UE 404, UE 1004, TX processor 368, RX processor 356 and / or controller / processor 359, which execute paging timing component 140 and decoding component 412, can provide a unit for decoding signals received on at least one of the resources for a first paging PDCCH monitoring timing or a second paging PDCCH monitoring timing, based on the paging timing configuration.
[0107] Figure 12 This is a flowchart of a method 1200 for detecting duplicate PDCCHs in short messages or paging PDCCHs. This method can be implemented by a base station (e.g., Figure 1 and Figure 3 The 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 paging timing management component 198, a TX processor 316, an RX processor 370 and / or a controller / processor 375. Figure 4 Base station 402; Figure 10 The base station 1002) is used to execute this.
[0108] At block 1202, method 1200 includes: determining a paging timing configuration that indicates the repetition of a first paging PDCCH monitoring timing by identifying a second paging PDCCH monitoring timing, the first and second paging PDCCH monitoring timings corresponding to the same PDCCH. For example, paging timing management component 198 may generate paging timing configuration 1006. Furthermore, paging timing configuration 1006 may indicate the type of repetition performed during a PDCCH repetition mode, the repetition mode implemented during the PDCCH repetition mode, and / or the period of repeated paging PDCCH monitoring timings during the PDCCH repetition mode. Additionally, paging timing configuration 1006 may be provided to UE 1004 semi-statically or dynamically. In some aspects, paging timing configuration 1006 may include an SIB identifying the first and second paging PDCCH monitoring timings. For example, paging timing configuration 1006 can identify a first repetition pattern and a second repetition pattern of multiple PDCCH monitoring timings. The first repetition pattern includes a first paging PDCCH monitoring timing followed by a second paging PDCCH monitoring timing. In some aspects, the first repetition pattern can be identified by a first parameter defining the number of paging PDCCH monitoring timings within the first repetition pattern, and the second repetition pattern can be identified by a second parameter defining the number of paging PDCCH monitoring timings within the second repetition pattern. Furthermore, the first repetition pattern can be associated with a first SSB, and the second repetition pattern can be associated with a second SSB. In some other aspects, paging timing configuration 1006 can include a short message identifying the first and second paging PDCCH monitoring timings.
[0109] Furthermore, in some aspects, the paging timing configuration 1006 may include a mapping type indicator that identifies the first paging PDCCH monitoring timing and the second paging PDCCH monitoring timing as being associated with the same PDCCH mapped to the same plurality of control channel elements. Alternatively, in some aspects, the paging timing configuration 1006 may include a mapping type indicator that identifies the first paging PDCCH monitoring timing and the second paging PDCCH monitoring timing as being associated with independently mapped PDCCHs.
[0110] Therefore, the base stations 102, 402, 1002, TX processor 316, RX processor 370, and / or controller / processor 375 that execute the paging timing management component 198 can provide units for determining a paging timing configuration that indicates the repetition of a first paging PDCCH monitoring timing by identifying a second paging PDCCH monitoring timing, wherein the first paging PDCCH monitoring timing and the second paging PDCCH monitoring timing correspond to the same PDCCH.
[0111] At block 1204, method 1200 may include sending a paging timing configuration to a UE. For example, paging timing management component 198 may send a paging timing configuration 1006 to one or more UEs (e.g., UE 404).
[0112] Therefore, the base station 102, base station 402, base station 1002, TX processor 316, RX processor 370 and / or controller / processor 375 that execute the paging timing management component 198 can provide a unit for sending paging timing configuration to the UE.
[0113] At box 1206, method 1200 may optionally include: sending a PDCCH repetition process activation signal to activate the aggregation monitoring timing of the PDCCH monitoring timing group.
[0114] For example, the paging timing management component 198 may send a PDCCH repeat procedure activation signal 908 to the UE 404, indicating the initiation of an enhanced coverage PDCCH mode. In some aspects, the PDCCH repeat procedure activation signal 908 may be a radio resource control (RRC) configuration message including an activation indication, a media access control (MAC) control element (CE) including an activation signal, UE-specific downlink control information (DCI) including an activation signal, or group common downlink control information (DCI) including an activation signal.
[0115] Therefore, the base stations 102, 402, 1002, TX processor 316, RX processor 370 and / or controller / processor 375 that execute the paging timing management component 198 can provide units for sending PDCCH repetition process activation signals to activate the aggregation monitoring timing of packets for PDCCH monitoring timing.
[0116] At box 1208, method 1200 may include: sending the same PDCCH on resources for a first paging PDCCH monitoring timing and resources for a second paging PDCCH monitoring timing based on paging timing configuration.
[0117] For example, the paging timing management component 198 can send a CORESET including PDCCH 1012(1)-(N). In some aspects, the paging timing management component 198 can send a short message or paging PDCCH 1012(1)-(2) in the same frequency area for a first paging PDCCH monitoring timing and a second paging PDCCH monitoring timing. In some aspects, the paging timing management component 198 can send a short message or paging PDCCH 1012(1)-(2) in the same monitoring time slot for a first paging PDCCH monitoring timing and a second paging PDCCH monitoring timing in a time-division multiplexing mode. In some other aspects, the paging timing management component 198 can send a short message or paging PDCCH 1012(1) in a first monitoring time slot of a time-division multiplexing mode for a first paging PDCCH monitoring timing, and send a short message or paging PDCCH 1012(2) in a second monitoring time slot of a time-division multiplexing mode for a second paging PDCCH monitoring timing. In another aspect, a short message and paging PDCCH 1012(1)-(6) (i.e., the first repeating pattern) may be sent during the first multiple paging period of the monitoring time, and a short message and paging PDCCH 1012(7)-(12) (i.e., the second repeating pattern) may be sent during the second multiple paging period of the monitoring time.
[0118] Additionally, in some aspects, the paging timing management component 198 may transmit PDCCH 1012(1)-(2) for the first paging PDCCH monitoring timing and the second paging PDCCH monitoring timing in association with the same quasi-co-location assumption as the SSB of base station 1002. Furthermore, in some aspects, base station 1002 may continuously map PDCCHs across multiple monitoring timings. Alternatively, base station 1002 may repeat PDCCH transmissions across multiple paging monitoring timings.
[0119] Furthermore, in some aspects, the paging timing management component 198 can map the first paging PDCCH monitoring timing and the second paging PDCCH monitoring timing to the same multiple CCEs. For example, the paging timing management component 198 can map the PDCCH to multiple CCEs based on a first mapping parameter to determine the first PDCCH 1012 (1), map the same PDCCH to multiple CCEs based on a second mapping parameter to determine the second PDCCH 1012 (1), and send the first PDCCH 1012 (1) during the first PDCCH monitoring timing, and send the second PDCCH 1012 (2) during the second paging PDCCH monitoring timing. Alternatively, the paging timing management component 198 can map the first paging PDCCH monitoring timing and the second paging PDCCH monitoring timing to different multiple CCEs. For example, the paging timing management component 198 may map the PDCCH to a first plurality of CCEs based on a first mapping parameter to determine a first PDCCH 1012 (1), map the same PDCCH to a second plurality of CCEs based on a second mapping parameter to determine a second PDCCH 1012 (2), and send the first PDCCH 1012 (1) during the first PDCCH monitoring timing, and send the second PDCCH 1012 (2) during the second paging PDCCH monitoring timing.
[0120] Therefore, the base stations 102, 402, 1002, TX processor 316, RX processor 370 and / or controller / processor 375 that execute the paging timing management component 198 can provide units for transmitting the same PDCCH on resources for the first paging PDCCH monitoring timing and resources for the second paging PDCCH monitoring timing based on the paging timing configuration.
[0121] The specific order or hierarchy of the boxes in the disclosed process / flowchart is illustrative of the example method. The specific order or hierarchy of the boxes in the process / flowchart may be rearranged based on design preferences. Furthermore, some boxes may be combined or omitted. The appended method claims give the elements of each box in the sample order and are not intended to limit one to the given specific order or hierarchy.
[0122] The foregoing description is provided to enable any person skilled in the art to implement the various aspects described herein. Various modifications to these aspects will be readily apparent to a person skilled in the art, and the general principles defined herein can be applied to other aspects. The claims are not intended to be limited to the aspects shown herein, but are given the full scope consistent with the textual claims, wherein, unless expressly stated otherwise, reference to the singular form is not intended to mean “one and only one,” but rather “one or more.” Unless expressly stated otherwise, the term “some” 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, or C, and may include multiples of A, multiples of B, or multiples of 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 contain one or more members of A, B, or C. All structural and functional equivalents of the elements described throughout the various aspects of this disclosure are expressly incorporated herein by reference and intended to be included by the claims, and such structural and functional equivalents are known to or will be known later to those skilled in the art. Furthermore, nothing disclosed herein is intended to be offered 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 "unit". Therefore, no claim element is to be interpreted as a unit plus function unless the element is expressly stated using the phrase "unit for...".
[0123] Example Terms
[0124] A. A method for wireless communication at a UE, comprising: receiving a paging timing configuration, the paging timing configuration indicating the repetition of a first paging PDCCH monitoring timing by identifying a second paging physical downlink control channel (PDCCH) monitoring timing; and decoding, based on the paging timing configuration, a signal received on at least one of resources used for the first paging PDCCH monitoring timing or resources used for the second paging PDCCH monitoring timing.
[0125] B. The method described in paragraph A, wherein receiving the paging timing configuration includes: receiving a system information block (SIB) that identifies the first paging PDCCH monitoring timing and the second paging PDCCH monitoring timing.
[0126] C. The method described in paragraph A, wherein receiving the paging timing configuration includes: receiving a short message identifying the first paging PDCCH monitoring timing and the second paging PDCCH monitoring timing.
[0127] D. The method as described in any one of paragraphs A, C, and D, further comprising: combining a first PDCCH associated with the first paging PDCCH monitoring timing and a second PDCCH associated with the second paging PDCCH monitoring timing to form a combined PDCCH, wherein decoding the signal comprises: decoding the combined PDCCH.
[0128] E. The method as described in any one of paragraphs A and D, wherein the first paging PDCCH monitoring timing and the second paging PDCCH monitoring timing correspond to one or more PDCCHs configured to schedule the Physical Downlink Shared Channel (PDSCH).
[0129] F. The method as described in any one of paragraphs A and D, wherein the first paging PDCCH monitoring timing corresponds to a first PDCCH configured to schedule a first physical downlink shared channel (PDSCH), and the second paging PDCCH monitoring timing corresponds to a second PDCCH configured to schedule a second PDSCH.
[0130] G. The method as described in any one of paragraphs A, D, and E, wherein the first paging PDCCH monitoring timing and the second paging PDCCH monitoring timing correspond to one or more PDCCH candidates including short messages.
[0131] H. The method as described in any one of paragraphs A, B, and C further includes: monitoring the first paging PDCCH monitoring timing and the second paging PDCCH monitoring timing within the same frequency region based on the paging timing configuration.
[0132] I. The method as described in any one of paragraphs A, B, and C, further includes: monitoring the first paging PDCCH monitoring timing and the second paging PDCCH monitoring timing within a monitoring time slot in a time-division multiplexing mode based on the paging timing configuration.
[0133] J. The method as described in any one of paragraphs A, B, and C further includes: monitoring the first paging PDCCH monitoring timing in a first monitoring time slot of the time-division multiplexing mode based on the paging timing configuration, and monitoring the second paging PDCCH monitoring timing in a second monitoring time slot of the time-division multiplexing mode.
[0134] K. The method as described in any one of paragraphs A, B, and C further includes: monitoring the first paging PDCCH monitoring timing and the second paging PDCCH monitoring timing in association with the same quasi-co-location assumption as the base station's synchronization signal and physical broadcast channel block (SSB) based on the paging timing configuration.
[0135] L. The method as described in any one of paragraphs AK, wherein the first paging PDCCH monitoring timing and the second paging PDCCH monitoring timing are associated with the same duration of the same number of control channel elements or control resource sets.
[0136] M. The method as described in any one of paragraphs AL, wherein receiving the paging timing configuration includes: receiving a system information block (SIB), the SIB identifying a first repetition mode and a second repetition mode of a plurality of PDCCH monitoring timings, the first repetition mode including the first paging PDCCH monitoring timing, the first paging PDCCH monitoring timing being followed by the second paging PDCCH monitoring timing, the first repetition mode being associated with a first synchronization signal and a physical broadcast channel block (SSB), and the second repetition mode being associated with a second SSB.
[0137] N. The method described in paragraph M, wherein the receiving paging timing configuration includes: a receiving mapping type indicator, the mapping type indicator identifying that the first paging PDCCH monitoring timing and the second paging PDCCH monitoring timing are associated with the same PDCCH candidate mapped to the same plurality of control channel elements.
[0138] O. The method described in paragraph M further includes: receiving the paging timing configuration including a mapping type indicator, the mapping type indicator identifying that the first paging PDCCH monitoring timing and the second paging PDCCH monitoring timing are each associated with independently mapped PDCCH candidates.
[0139] P. The method as described in any one of paragraphs A and B, wherein receiving the paging timing configuration includes: receiving a System Information Block (SIB), the SIB identifying a first number of paging PDCCH monitoring timings in a first repeating mode and a second number of paging PDCCH monitoring timings in a second repeating mode, the first repeating mode including the first paging PDCCH monitoring timing, the first paging PDCCH monitoring timing being followed by the second paging PDCCH monitoring timing, the second repeating mode including a plurality of PDCCH monitoring timings, the first repeating mode being associated with a first synchronization signal and a physical broadcast channel block (SSB), and the second repeating mode being associated with a second SSB.
[0140] Q. The method as described in any one of paragraphs A, B, C, D, and E, further includes: receiving a PDCCH repeat process activation signal to activate a paging PDCCH repeat process for the first paging PDCCH monitoring timing and the second paging PDCCH monitoring timing.
[0141] R. A UE for wireless communication, 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 according to any one of paragraphs AQ.
[0142] S. A UE for wireless communication, comprising a unit for performing the method according to any one of paragraphs AQ.
[0143] T. A non-transitory computer-readable medium storing computer-executable code, which, when executed by a processor, causes the processor to perform the method according to any one of paragraphs AQ.
[0144] U. A method for wireless communication at a base station, comprising: determining a paging timing configuration, the paging timing configuration indicating repetition of a first paging PDCCH monitoring timing by identifying a second paging physical downlink control channel (PDCCH) monitoring timing, the first paging PDCCH monitoring timing and the second paging PDCCH monitoring timing corresponding to the same PDCCH; transmitting the paging timing configuration to a user equipment (UE); and transmitting the same PDCCH on resources used for the first paging PDCCH monitoring timing and resources used for the second paging PDCCH monitoring timing based on the paging timing configuration.
[0145] V. The method described in paragraph U, wherein sending the paging timing configuration includes: sending a system information block (SIB) that identifies the first paging PDCCH monitoring timing and the second paging PDCCH monitoring timing.
[0146] W. As described in paragraph U, sending the paging timing configuration includes: sending a short message identifying the first paging PDCCH monitoring timing and the second paging PDCCH monitoring timing.
[0147] X, the method as described in any one of paragraphs UW, wherein the same PDCCH includes short message PDCCH.
[0148] Y, the method as described in any one of paragraphs UW, wherein the same PDCCH includes a paging PDCCH.
[0149] Z. The method as described in any one of paragraphs U and Y, wherein sending the same PDCCH comprises: sending the same PDCCH in the same frequency region of the frequency division multiplexing mode for the first paging PDCCH monitoring time and the second paging PDCCH monitoring time.
[0150] AA, the method as described in any one of paragraphs UY, wherein sending the same PDCCH comprises: sending the same PDCCH within a monitoring time slot in a time-division multiplexing mode for the first paging PDCCH monitoring time slot and the second paging PDCCH monitoring time slot.
[0151] A. The method as described in any one of paragraphs U and Y, wherein sending the same PDCCH comprises: sending the same PDCCH for the first paging PDCCH monitoring timing in a first monitoring time slot of the time division multiplexing mode; and sending the same PDCCH for the second paging PDCCH monitoring timing in a second monitoring time slot of the time division multiplexing mode.
[0152] The method described in any one of paragraphs AC and UY, wherein the first paging PDCCH monitoring timing and the second paging PDCCH monitoring timing are associated with the same duration of the same number of control channel elements or control resource sets.
[0153] The method described in any one of AD, paragraphs U-AC, wherein transmitting the paging timing configuration includes: transmitting a System Information Block (SIB) that identifies a first repetition pattern and a second repetition pattern of a plurality of paging PDCCH monitoring timings, the first repetition pattern including the first paging PDCCH monitoring timing followed by the second paging PDCCH monitoring timing, the first repetition pattern being associated with a first synchronization signal and a Physical Broadcast Channel Block (SSB), and the second repetition pattern being associated with a second SSB.
[0154] The method described in paragraph AD, AE, further includes: monitoring the first paging PDCCH monitoring timing and the second paging PDCCH monitoring timing in association with the same quasi-co-location assumptions of the base station's synchronization signal and physical broadcast channel block (SSB) based on the paging timing configuration.
[0155] AF, as described in paragraph AD, wherein sending the paging timing configuration includes: sending a mapping type indicator, the mapping type indicator identifying that the first paging PDCCH monitoring timing and the second paging PDCCH monitoring timing are mapped to a plurality of control channel elements, and the method further includes: mapping the same PDCCH to the plurality of control channel elements based on a first mapping parameter to determine a first PDCCH candidate; mapping the same PDCCH candidate to the plurality of control channel elements based on a second parameter to determine a second PDCCH candidate; and sending the first PDCCH candidate during the first PDCCH monitoring timing and sending the second PDCCH candidate during the second paging PDCCH monitoring timing.
[0156] The method described in paragraph AD, wherein sending the paging timing configuration includes: sending a mapping type indicator, the mapping type indicator identifying that the first PDCCH monitoring and the second paging PDCCH monitoring timing are each associated with independently mapped PDCCH candidates, and the method further includes: mapping the same PDCCH to a first plurality of control channel elements based on a first mapping parameter to determine a first PDCCH candidate; mapping the same PDCCH candidate to a second plurality of control channel elements based on a second parameter to determine a second PDCCH candidate; and sending the first PDCCH candidate during the first PDCCH monitoring timing and sending the second PDCCH candidate during the second paging PDCCH monitoring timing.
[0157] AH, as described in paragraph U, wherein sending the paging timing configuration includes: sending a System Information Block (SIB), the SIB identifying a first number of paging PDCCH monitoring timings in a first repeating mode and a second number of paging PDCCH monitoring timings in a second repeating mode, the first repeating mode including the first paging PDCCH monitoring timing, the first paging PDCCH monitoring timing being followed by the second paging PDCCH monitoring timing, the second repeating mode including multiple PDCCH monitoring timings, the first repeating mode being associated with a first synchronization signal and a physical broadcast channel block (SSB), and the second repeating mode being associated with a second SSB.
[0158] The method, as described in any one of paragraphs U-AH, further includes: sending a PDCCH repeat process activation signal to activate the paging PDCCH repeat process for the first paging PDCCH monitoring timing and the second paging PDCCH monitoring timing.
[0159] AJ, a base station for wireless communication, 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 according to any one of paragraphs S-AJ.
[0160] AK, a base station for wireless communication, including a unit for performing the method according to any one of paragraphs S-AE.
[0161] AL, a non-transitory computer-readable medium storing computer-executable code, which, when executed by a processor, causes the processor to perform the method according to any one of paragraphs U-AK.
Claims
1. A user equipment (UE) for wireless communication, comprising: Memory, which stores computer-executable instructions; as well as At least one processor, coupled to the memory and configured to execute the computer-executable instructions to perform the following operations: Receive paging timing configuration, the paging timing configuration indicating the PDCCH transmission and the repetition of the PDCCH transmission during the first paging physical downlink control channel (PDCCH) monitoring timing and the second paging PDCCH monitoring timing; as well as Based on the paging timing configuration, at least one of the PDCCH transmissions received on at least one of the resources used for the first paging PDCCH monitoring timing or the resources used for the second paging PDCCH monitoring timing, and at least one of the repetitions of the PDCCH transmissions, is decoded.
2. The UE according to claim 1, wherein, In order to receive the paging timing configuration, the at least one processor is also configured to execute the computer-executable instructions to perform the following operations: Receive a system information block (SIB) that identifies the first paging PDCCH monitoring timing and the second paging PDCCH monitoring timing.
3. The UE according to claim 1, wherein, In order to receive the paging timing configuration, the at least one processor is also configured to execute the computer-executable instructions to perform the following operations: Receive a short message identifying the first paging PDCCH monitoring time and the second paging PDCCH monitoring time.
4. The UE according to claim 1, wherein, The at least one processor is also configured to execute the computer-executable instructions to perform the following operations: The first PDCCH transmission associated with the first paging PDCCH monitoring timing and the second PDCCH transmission associated with the second paging PDCCH monitoring timing are combined to form a combined PDCCH transmission. In order to decode at least one of the PDCCH transmissions and the repetitions of the PDCCH transmissions, the at least one processor is further configured to execute the computer-executable instructions to perform the following operation: decoding the combined PDCCH transmissions.
5. The UE according to claim 1, wherein, The first paging PDCCH monitoring timing and the second paging PDCCH monitoring timing correspond to one or more PDCCH transmissions configured to schedule the Physical Downlink Shared Channel (PDSCH).
6. The UE according to claim 1, wherein, The first paging PDCCH monitoring timing corresponds to the first PDCCH transmission configured to schedule the first physical downlink shared channel (PDSCH), and the second paging PDCCH monitoring timing corresponds to the second PDCCH transmission configured to schedule the second PDSCH.
7. The UE according to claim 1, wherein, The first paging PDCCH monitoring timing and the second paging PDCCH monitoring timing correspond to one or more PDCCH candidates including short messages.
8. The UE according to claim 1, wherein, The at least one processor is also configured to execute the computer-executable instructions to perform the following operations: Based on the paging timing configuration, the first paging PDCCH monitoring timing and the second paging PDCCH monitoring timing are monitored within the same frequency range.
9. The UE according to claim 1, wherein, The at least one processor is also configured to execute the computer-executable instructions to perform the following operations: Based on the paging timing configuration, the first paging PDCCH monitoring timing and the second paging PDCCH monitoring timing are monitored within the monitoring time slot of the time-division multiplexing mode.
10. The UE according to claim 1, wherein, The at least one processor is also configured to execute the computer-executable instructions to perform the following operations: Based on the paging timing configuration, the first paging PDCCH monitoring timing is monitored in the first monitoring time slot of the time-division multiplexing mode, and the second paging PDCCH monitoring timing is monitored in the second monitoring time slot of the time-division multiplexing mode.
11. The UE according to claim 1, wherein, The at least one processor is also configured to execute the computer-executable instructions to perform the following operations: Based on the paging timing configuration, the first paging PDCCH monitoring timing and the second paging PDCCH monitoring timing are monitored in association with the same quasi-co-location assumptions of the base station's synchronization signal and physical broadcast channel block (SSB).
12. The UE according to claim 1, wherein, The first paging PDCCH monitoring timing and the second paging PDCCH monitoring timing are associated with the same duration of the same number of control channel elements or control resource sets.
13. The UE according to claim 1, wherein, In order to receive the paging timing configuration, the at least one processor is also configured to execute the computer-executable instructions to perform the following operations: The system information block (SIB) identifies a first repetition mode and a second repetition mode of multiple paging PDCCH monitoring opportunities. The first repetition mode includes the first paging PDCCH monitoring opportunity, followed by the second paging PDCCH monitoring opportunity. The first repetition mode is associated with a first synchronization signal and a physical broadcast channel block (SSB), and the second repetition mode is associated with a second SSB.
14. The UE according to claim 1, wherein, In order to receive the paging timing configuration, the at least one processor is also configured to execute the computer-executable instructions to perform the following operations: A System Information Block (SIB) is received, wherein the SIB identifies a first number of paging PDCCH monitoring opportunities in a first repeating mode and a second number of paging PDCCH monitoring opportunities in a second repeating mode, wherein the first repeating mode includes the first paging PDCCH monitoring opportunity, the first paging PDCCH monitoring opportunity is followed by the second paging PDCCH monitoring opportunity, the second repeating mode includes multiple paging PDCCH monitoring opportunities, the first repeating mode is associated with a first synchronization signal and a Physical Broadcast Channel Block (SSB), and the second repeating mode is associated with a second SSB.
15. The UE according to claim 1, wherein, The at least one processor is also configured to execute the computer-executable instructions to perform the following operations: Receive a PDCCH repeat process activation signal to activate the PDCCH repeat process for the first PDCCH monitoring timing and the second PDCCH monitoring timing.
16. A method for wireless communication at a user equipment (UE), comprising: Receive paging timing configuration, the paging timing configuration indicating the PDCCH transmission and the repetition of the PDCCH transmission during the first paging physical downlink control channel (PDCCH) monitoring timing and the second paging PDCCH monitoring timing; as well as Based on the paging timing configuration, at least one of the PDCCH transmissions received on at least one of the resources used for the first paging PDCCH monitoring timing or the resources used for the second paging PDCCH monitoring timing, and at least one of the repetitions of the PDCCH transmissions, is decoded.
17. The method of claim 16, further comprising: The UE according to any one of claims 1 to 15 includes at least one processor configured to execute computer-executable instructions for operation.
18. A base station for wireless communication, comprising: Memory, which stores computer-executable instructions; as well as At least one processor, coupled to the memory and configured to execute the computer-executable instructions to perform the following operations: Determine the paging timing configuration, which indicates the PDCCH transmission and the repetition of the PDCCH transmission during the first paging physical downlink control channel (PDCCH) monitoring timing and the second paging PDCCH monitoring timing; Send the paging timing configuration to the user equipment (UE); as well as Based on the paging timing configuration, the PDCCH transmission and the repetition of the PDCCH transmission are sent on the resources used for the first paging PDCCH monitoring timing and the resources used for the second paging PDCCH monitoring timing.
19. The base station according to claim 18, wherein, In order to send the paging timing configuration, the at least one processor is also configured to execute the computer-executable instructions to perform the following operations: Send a system information block (SIB) that identifies the timing of the first paging PDCCH monitoring and the timing of the second paging PDCCH monitoring.
20. The base station according to claim 18, wherein, In order to send the paging timing configuration, the at least one processor is also configured to execute the computer-executable instructions to perform the following operations: Send a short message identifying the first paging PDCCH monitoring time and the second paging PDCCH monitoring time.
21. The base station according to claim 18, wherein, The PDCCH transmission includes short message PDCCH transmission.
22. The base station according to claim 18, wherein, The PDCCH transmission includes paging PDCCH transmission.
23. The base station according to claim 18, wherein, In order to send the PDCCH transmission and the repetition of the PDCCH transmission, the at least one processor is further configured to execute the computer-executable instructions to perform the following operations: For the first paging PDCCH monitoring opportunity and the second paging PDCCH monitoring opportunity, the PDCCH transmission and the repetition of the PDCCH transmission are transmitted in the same frequency area of the frequency division multiplexing mode.
24. The base station according to claim 18, wherein, In order to send the PDCCH transmission and the repetition of the PDCCH transmission, the at least one processor is further configured to execute the computer-executable instructions to perform the following operations: For the first paging PDCCH monitoring time and the second paging PDCCH monitoring time, the PDCCH transmission and the repetition of the PDCCH transmission are sent within the monitoring time slot of the time division multiplexing mode.
25. The base station according to claim 18, wherein, In order to send the PDCCH transmission and the repetition of the PDCCH transmission, the at least one processor is further configured to execute the computer-executable instructions to perform the following operations: In the first monitoring time slot of the time-division multiplexing mode, the PDCCH transmission is sent for the first paging PDCCH monitoring opportunity; and The repeat of the PDCCH transmission is sent during the second monitoring time slot of the time division multiplexing mode in response to the second paging PDCCH monitoring timing.
26. The base station according to claim 18, wherein, In order to send the PDCCH transmission and the repetition of the PDCCH transmission, the at least one processor is further configured to execute the computer-executable instructions to perform the following operations: The same quasi-co-location assumption as the synchronization signal block is used to send the PDCCH transmission and the repetition of the PDCCH transmission for the first paging PDCCH monitoring time and the second paging PDCCH monitoring time.
27. The base station according to claim 18, wherein, The first paging PDCCH monitoring timing and the second paging PDCCH monitoring timing are associated with the same duration of the same number of control channel elements or control resource sets.
28. The base station according to claim 18, wherein, In order to send the paging timing configuration, the at least one processor is also configured to execute the computer-executable instructions to perform the following operations: A System Information Block (SIB) is transmitted, the SIB identifying a first repetition mode and a second repetition mode of multiple paging PDCCH monitoring opportunities, the first repetition mode including the first paging PDCCH monitoring opportunity, the first paging PDCCH monitoring opportunity being followed by the second paging PDCCH monitoring opportunity, the first repetition mode being associated with a first synchronization signal and a physical broadcast channel block (SSB), and the second repetition mode being associated with a second SSB.
29. The base station according to claim 18, wherein, In order to send the paging timing configuration, the at least one processor is also configured to execute the computer-executable instructions to perform the following operations: A System Information Block (SIB) is transmitted, the SIB identifying a first number of paging PDCCH monitoring opportunities in a first repeating mode and a second number of paging PDCCH monitoring opportunities in a second repeating mode, the first repeating mode including the first paging PDCCH monitoring opportunity followed by the second paging PDCCH monitoring opportunity, the second repeating mode including multiple paging PDCCH monitoring opportunities, the first repeating mode being associated with a first synchronization signal and a physical broadcast channel block (SSB), and the second repeating mode being associated with a second SSB.
30. The base station according to claim 18, wherein, The at least one processor is also configured to execute the computer-executable instructions to perform the following operations: Send a PDCCH repeat process activation signal to activate the paging PDCCH repeat process for the first paging PDCCH monitoring timing and the second paging PDCCH monitoring timing.
31. A method for wireless communication at a base station, comprising: Determine the paging timing configuration, which indicates the PDCCH transmission and the repetition of the PDCCH transmission during the first paging physical downlink control channel (PDCCH) monitoring timing and the second paging PDCCH monitoring timing; Send the paging timing configuration to the user equipment (UE); as well as Based on the paging timing configuration, the PDCCH transmission and the repetition of the PDCCH transmission are sent on the resources used for the first paging PDCCH monitoring timing and the resources used for the second paging PDCCH monitoring timing.
32. The method of claim 31, further comprising: The base station according to any one of claims 18 to 30 includes at least one processor configured to execute computer-executable instructions for operation.
Citation Information
Patent Citations
Methods for controlling a paging operation and apparatuses thereof
CN110881210A