systems and methods for recovery of loss of communication beam

专利摘要:
It is a method for communication that includes determining whether any of a plurality of communication control beams has failed, identifying at least one active communication control beam in the plurality of communication control beams, and communicating a loss communication partial beam pair (BPL) link on at least one active communication control beam.
公开号:BR112020005025A2
申请号:R112020005025-3
申请日:2018-08-08
公开日:2020-09-15
发明作者:Jianghong LUO；Navid Abedini；Sundar Subramanian；Junyi Li；Bilal Sadiq；Muhammad Nazmul Islam
申请人:Qualcomm Incorporated；
IPC主号:

专利说明:

[0001] [0001] This application claims priority to and the benefit of provisional patent application No. US 62 / 559,519, entitled “SYSTEMS AND METHODS FOR COMMUNICATION BEAM LOSS REOVERY”, filed on September 16, 2017, the content of which is incorporated into this document as reference, in its entirety, as if it were completely presented below and for all applicable purposes. TECHNICAL FIELD
[0002] [0002] The technology discussed below refers to wireless communication systems and, more particularly, to the recovery of loss of communication beam. The modalities enable and provide systems and methods for retrieving a communication beam where less than all available communication control beams can fail. INTRODUCTION
[0003] [0003] Wireless communication systems are widely deployed to provide various telecommunication services, such as telephony, video, data, messaging and broadcasts. Typical wireless communication systems can employ multiple access technologies capable of supporting communication with multiple users by sharing available system resources (for example, bandwidth, transmission power). Examples of such multiple access technologies include code division multiple access (CDMA) systems,
[0004] [0004] These multiple access technologies have been adopted in several telecommunication standards to provide a common protocol that allows different wireless devices to communicate at a municipal, national, regional and even global level. An exemplary telecommunication standard is Long Term Evolution (LTE). An example of a breakthrough in LTE technology is mentioned as 5G, sometimes also referred to as a new radio (NR). The terms 5G and NR represent an advancement in LTE technology that includes, for example, several advances for the wireless interface, processing improvements, and enabling greater bandwidth to provide additional features and connectivity.
[0005] [0005] For example, a wireless multiple access communication system may include several base stations, each of which supports communication simultaneously to multiple communication devices, otherwise known as user equipment (UEs). A base station can communicate with UEs on downlink channels (for example, for transmissions from a base station to a UE) and uplink channels
[0006] [0006] Several deployments of systems, methods and devices within the scope of the appended claims each have several aspects, none of which is solely responsible for the desirable attributes described in this document. Without limiting the scope of the appended claims, some prominent features are described in this document.
[0007] [0007] Details of one or more deployments of the material described in this specification are presented in the attached drawings and in the description below. Other features, aspects and advantages will be evident from the description, drawings and claims. It is noted that the relative dimensions of the following Figures may not be drawn to scale.
[0008] [0008] One aspect of disclosure provides a method for communication which includes determining whether any of a plurality of communication control beams has failed, identifying at least one active communication control beam in the plurality of communication control beams and communicating a partial beam pair (BPL) link loss communication on at least one active communication control beam.
[0009] [0009] Another aspect of the disclosure provides a system for communication that includes user equipment (UE) configured to determine if any one of a plurality of communication control beams has failed, the UE configured to identify at least one control beam. active communication in the plurality of communication control beams, and the UE is configured to communicate a partial beam pair (BPL) link loss communication in at least one active communication control beam.
[0010] [0010] Another aspect of disclosure provides a method for communication which includes determining whether any one of a plurality of communication control beams has failed, identifying at least one active communication control beam in the plurality of communication control beams and communicating a partial beam pair (BPL) link loss communication when a partial beam pair (BPL) link loss occurs between a first communication device and a first communication node,
[0011] [0011] Another aspect of the disclosure provides a non-transitory, computer-readable medium that stores computer-executable code for communication, the code executable by a processor to determine if any of a plurality of communication control beams has failed, to identify at least an active communication control beam in the plurality of communication control beams and communicating a partial beam pair (BPL) link loss communication in at least one active communication control beam.
[0012] [0012] Another aspect of the disclosure provides a communication device that includes a means for determining whether any of a plurality of communication control beams has failed, a means for identifying at least one active communication control beam in the plurality of control beams communication means and means for communicating a partial beam pair (GLP) link loss communication on at least one active communication control beam. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] [0013] In the Figures, similar reference numbers refer to similar parts throughout the different views, except where otherwise indicated. For reference numbers with letter character designations such as “102a” or “102b”, the letter character designations can differentiate between two parts or similar elements present in the same figure. Letter character designations for reference numbers can be omitted when a reference number is intended to cover all parts that have the same reference number in all figures.
[0014] [0014] Figure 1 is a diagram that illustrates an example of a network architecture, according to several aspects of the present disclosure.
[0015] [0015] Figure 2 is a diagram that illustrates an example of an access network, according to several aspects of the present disclosure.
[0016] [0016] Figure 3 is a diagram illustrating an example of a LTE downlink frame (DL) structure, according to various aspects of the present disclosure.
[0017] [0017] Figure 4 is a diagram illustrating an example of a UL frame structure in LTE, according to various aspects of the present disclosure.
[0018] [0018] Figure 5 is a diagram that illustrates an example of a radio protocol architecture for the user and control plans, according to several aspects of the present disclosure.
[0019] [0019] Figure 6 is a diagram that illustrates an example of an evolved Node B and user equipment in an access network, according to several aspects of the present disclosure.
[0020] [0020] Figure 7 is a diagram of a device-to-device communications system, according to various aspects of the present disclosure.
[0021] [0021] Figure 8 is a diagram illustrating an example of beam formation in a low frequency wireless communication system (for example, LTE).
[0022] [0022] Figure 9 is a diagram illustrating the formation of beams in a high frequency wireless communication system (for example, an mmW system).
[0023] [0023] Figure 10 is a diagram that illustrates a communication system, according to several aspects of the present disclosure.
[0024] [0024] Figure 11A is a diagram of a communication system that includes a base station and an UE for use in wireless communication, in accordance with various aspects of the present disclosure.
[0025] [0025] Figure 11B is a diagram of a communication system that includes a base station and an UE for use in M2M wireless communication in accordance with various aspects of the present disclosure.
[0026] [0026] Figure 12 is a flow chart that illustrates an example of a method for communication, according to several aspects of the present disclosure.
[0027] [0027] Figure 13 is a functional block diagram of a device for a communication system, according to several aspects of the present disclosure.
[0028] [0028] Figure 14 is a call flow diagram for a communication system, according to several aspects of the present disclosure.
[0029] [0029] Figure 15 is a call flow diagram for a communication system, according to several aspects of the present disclosure.
[0030] [0030] Figure 16 is a call flow diagram for a communication system, according to several aspects of the present disclosure.
[0031] [0031] Figure 17 is a diagram for a communication system, according to several aspects of the present disclosure.
[0032] [0032] Figure 18 is a call flow diagram for a communication system, according to several aspects of the present disclosure. DETAILED DESCRIPTION
[0033] [0033] The word “exemplifier” is used in this document to mean “serve as an example, case or illustration”. Any aspect described in this document as an “example” should not necessarily be interpreted as preferential or advantageous in relation to other aspects.
[0034] [0034] Various aspects of telecommunication systems will now be presented with reference to various devices and methods. These devices and methods will be described in the following detailed description and illustrated in the accompanying drawings by means of various blocks, components, circuits, processes, algorithms, etc. (collectively referred to as “elements”). These elements can be implemented using electronic hardware, computer software or any combination of them. Whether these elements can be deployed as hardware or as software depends on the particular application and the design restrictions imposed on the general system.
[0035] [0035] As an example, an element or any portion 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, systems on a chip (SoC), baseband processors, field programmable port arrangements (FPGAs), programmable logic devices (PLDs), state machines, switching logic, discrete hardware circuits and other suitable hardware configured to perform the several features described throughout this disclosure. One or more processors in the processing system can run the software. The software should be interpreted broadly to mean instructions, instruction sets, code, code segments, program code, programs, subprograms, software components, applications, software applications, software packages, routines, subroutines, objects, executables, execution threads, procedures, functions, etc., regardless of whether they are called software, firmware, middleware, microcode, hardware description language or otherwise.
[0036] [0036] Consequently, in one or more exemplifying modalities, the functions described can be implemented in hardware, software or any combination thereof. If implemented in software, the functions can be stored in or encoded as one or more instructions or code on computer-readable media. Computer-readable media includes computer storage media. Storage media can be any available media that can be accessed by a computer. By way of example, and not by way of limitation, such computer-readable media may comprise a random access memory (RAM), a read-only memory (ROM), an electrically erasable programmable ROM (EEPROM), optical disk storage, magnetic disk storage, other magnetic storage devices, combinations of the aforementioned types of computer-readable media, or any other media that can be used to store computer-executable code in the form of data structures or instructions that can be accessed by a computer .
[0037] [0037] The following description provides examples and does not limit the scope, applicability or examples presented in the claims. Changes can be made to the function and arrangement of the elements discussed without departing from the scope of the disclosure. Various examples can omit, replace or add various procedures or components, as appropriate. For example, the methods described can be performed in a different order than described, and several steps can be added, omitted or combined. In addition, the features described in relation to some examples can be combined into other examples.
[0038] [0038] The exemplary modalities of the disclosure are directed to beam forming systems generally used in millimeter wave communication systems, in which it is desirable to provide systems and methods for retrieving the communication beam, in which there may be multiple control beams of communication. communication and where less than all communication control beams can fail. In such methods and systems, where less than all communication control beams can fail, the failure can be termed a partial beam pair (BPL) link loss, in which a subset of the multiple communication control beams may fail, leaving at least one GLP established between a base station and an UE.
[0039] [0039] The term “beam management” refers, in general, to a set of layer 1 (L1) or layer 2 (L2) procedures (7-layer open systems interconnection model) to acquire and maintain a transmission receiving point (TRP) and / or bundles of user equipment (UE) that can be used for downlink (DL) and uplink (UL) transmission and reception.
[0040] [0040] The term "beam determination" refers to a situation in which a TRP or UE selects its own beam (or beams) of transmit and receive communication.
[0041] [0041] The term "beam measurement" refers to a situation where a TRP (or TRPs) or UE measures characteristics of received beam forming signals.
[0042] [0042] The term “beam report” refers, in general, to signal EU report information (or signals) with beam formation based on beam measurement processes.
[0043] [0043] The term "beam sweep" refers to the operation of covering a space area, with beams transmitted and / or received during a period of time in a predetermined manner.
[0044] [0044] As used in this document, the term "service beam" refers to an active communication beam and / or an active communication GLP between two communication devices.
[0045] [0045] As used in this document, the term "target beam" or "candidate beam" refers to another available communication beam and / or a communication GLP available between two communication devices that may be available for communication.
[0046] [0046] As used in this document, the term radio link failure (RLF) refers to the failure of radio communication in a service beam between two communication devices.
[0047] [0047] Both a channel status information reference signal (CSI-RS) and a synchronization signal (SS signal) can be used for beam management (BM). BM procedures support L1-RSRP reports
[0049] [0049] A set of continuous SS trigger with L blocks is transmitted periodically. The transmission of CSI-RS can be periodic when it is configured by a base station for a UE through a radio resource control (RRC) message during connection establishment; or it can be aperiodic, in which it is programmed by a base station. The transmission of CSI-RS can also be semi-persistent, in which it is configured for a UE through an RRC message during connection establishment and activated / deactivated by a base station.
[0050] [0050] A UE beam measurement report (for example, L1-RSRP report), can be periodic, in which it is configured for a UE through an RRC message during connection establishment; or aperiodic, where, for 5G or NR, it at least supports aperiodic beam reporting triggered by the base station.
[0051] [0051] A UE beam measurement report (for example, L1-RSRP report), can be semi-persistent, in which it is configured for a UE through an RRC message during connection establishment and enabled / disabled by a base station.
[0052] [0052] Both CSI-RS and SS can be based on a UE beam measurement report, in which a base station makes decisions to update the service beams.
[0053] [0053] Currently, at least the aperiodic beam report triggered by the network is supported. Aperiodic beam reporting can also be supported under certain conditions.
[0054] [0054] In LTE, the only L1 request signal is a programming request (SR) through a physical uplink control channel (PUCCH). An SR can be triggered by a MAC CE (middle access control-element control) temporary storage status report (BSR) at the MAC layer. A BSR can be triggered due to uplink data (UL) traffic or RRC signaling messages.
[0055] [0055] For beam failure detection, a UE monitors the beam failure detection (RS) reference signal to assess whether a beam failure trigger condition has been met. For the identification of a new candidate beam, a UE monitors the beam identification RS to find a new candidate beam. The beam identification RS includes periodic CSI-RS for beam management, if configured by the network, periodic CSI-RS and SS blocks within the server cell, if the SS block is also used in beam management.
[0056] [0056] For beam failure recovery request transmission, a UE reports a new candidate TX beam identified from the physical random access channel (PRACH), a communication similar to PRACH (for example, a communication with the use of a different parameter for the preamble sequence from the PRACH communication) or PUCCH. A UE can monitor the base station's response to the beam failure recovery request. A UE can monitor NR-PDCCH (new downlink control physical radio channel) with nearly colocalized spatial demodulation reference signal (DMRS) (QCL'ed) with identified candidate beam RS from UE.
[0057] [0057] Currently, an UE monitors periodic reference beams that can be almost colocalized (QCL) for current service beams and / or service control channels. If the UE detects beam failure from all possible control beams, the UE will then search for a new candidate beam or beams at the next periodic CSI-RS or SS opportunity. If the UE detects a new beam or candidate beams, the UE then transmits a beam failure recovery request with information about the identified beam or candidate beams to the base station. The UE monitors the base station for a response to the beam failure recovery request. This process is generally performed when there is a complete beam pair (BPL) link failure or loss and, in general, requires a UE to wait for a CSI-RS or SS signal from the base station before starting its beam recovery procedures, thus delaying any beam recovery procedures for at least one communication period, while the UE waits for the CSI-RS or SS from the base station.
[0058] [0058] Figure 1 is a diagram illustrating an LTE 100 network architecture. The LTE 100 network architecture can be referred to as an Evolved Pack System (EPS) 100. EPS 100 can include one or more user (UE) 102, an Evolved UMTS Terrestrial Radio Access Network (E-UTRAN) 104, an Evolved Packet Core (EPC) 110 and Internet Protocol Services (IP) from an Operator 122. EPS 100 can to interconnect with other access networks, however, for the sake of simplicity, those entities / interfaces are not shown. As shown, EPS 100 provides packet switching services; however, as the elements skilled in the art will readily observe, the various concepts presented throughout this disclosure can be extended to networks that provide circuit switching services. In addition, although an LTE network is illustrated as an example, other types of networks can also be used, including, for example, just a 5G network.
[0059] [0059] E-UTRAN 104 includes a base station 106, such as, for example, the evolved Node B (eNB) 106 and other eNBs 108, which may include a gNodeB (gNB), a domestic NodeB, a domestic eNodeB or a base station using some other suitable terminology. For example, on 5G or Novo Rádio (NR) networks, a base station can be called a gNB. E-UTRAN 104 may also include a Multicast Coordination Entity (MCE) 128. eNB 106 provides user protocol and control plan terminations for the UE
[0060] [0060] eNB 106 is connected to EPC 110. EPC 110 may include a Mobility Management Entity (MME) 112, a Domestic Subscriber Server (HSS) 120, other MMEs 114, a Service Communication Port 116, a Multicast and Multimedia Broadcast Service Communication Port (MBMS) 124, a Multicast and Broadcast Service Center (BM-SC) 126 and a Packet Data Network (PDN) Communication Port 118. A MME 112 is the control node that processes signaling between UE 102 and EPC
[0061] [0061] Figure 2 is a diagram illustrating an example of an access network 200 in an LTE network architecture. In this example, the access network 200 is divided into several cell regions (cells) 202. One or more lower power class eNBs / gNBs 208 may have cell regions 210 that overlap one or more of cells 202. The lower power class eNB / gNB 208 may be a femtocell (for example, domestic eNB (HeNB)), picocell, microcell or remote radio head (RRH). The macro eNBs / gNBs 204 are each assigned to a respective cell 202 and are configured to provide an access point for EPC 110 to all UEs 206 in cells 202. There is no centralized controller in this example of a network of access 200, however, a centralized controller can be used in alternative configurations. ENBs / gNBs 204 are responsible for all radio related functions that include radio bearer control, admission control, mobility control, programming, security and connectivity to service communication port 116. An eNB / gNB can support a or multiple (for example, three) cells (also referred to as sectors). The term “cell” can refer to the smallest coverage area of an eNB / gNB and / or an eNB / gNB subsystem that serves a particular coverage area. Additionally, the terms “eNB”, “gNB”, “station-
[0062] [0062] The modulation and multiple access scheme employed by the access network 200 may vary depending on the particular telecommunications standard that is implemented. In LTE applications, OFDM is used in DL and SC-FDMA is used in UL to support both frequency division duplexing (FDD) and time division duplexing (TDD). As the elements skilled in the art will readily observe from the detailed description below, the various concepts presented in this document are well suited for LTE applications. However, these concepts can be readily extended to other telecommunication standards that employ other techniques of multiple access and modulation. As an example, these concepts can be extended to Optimized Evolution Data (EV-DO), Ultra-Mobile Broadband (UMB), 5G or other multiple access and modulation techniques. EV-DO and UMB are air interface standards promulgated by the 3rd Generation Partnership Project 2 (3GPP2) as part of the CDMA2000 family of standards and employs CDMA to provide broadband Internet access for mobile stations. These concepts can also be extended to Universal Terrestrial Radio Access (UTRA) that employs Broadband CDMA (W-CDMA) and other CDMA variants, such as TD-SCDMA; Global System for Mobile Communications (GSM) employing TDMA; and Evolved UTRA (E-UTRA), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20 and OFDM Flash that employs OFDMA. UTRA, E-UTRA, UMTS, LTE and GSM are described in documents of organization 3 GPP. CDMA2000 and UMB are described in documents of the 3GPP2 organization. The actual wireless communication standard and the multiple access technology employed will depend on the specific application and the general design restrictions imposed on the system.
[0063] [0063] eNBs / gNBs 204 can have multiple antennas that support MIMO technology. The use of MIMO technology enables eNBs / gNBs 204 to explore the spatial domain to support spatial multiplexing, beam formation and transmission diversity. Spatial multiplexing can be used to transmit different data streams simultaneously on the same frequency. Data streams can be transmitted to a single UE 206 to increase the data rate or to multiple UEs 206 to increase the overall system capacity. This is achieved through the spatial pre-coding of each data stream (that is, applying a scaling of an amplitude and a phase) and, then, the transmission of each spatially pre-coded stream through multiple transmission antennas in the DL. Spatially pre-coded data streams reach the UE (or UEs) 206 with different spatial signatures, which allows each of the 206 UEs to retrieve the one or more data streams destined for such UE 206. In the UL, each UE 206 transmits a spatially pre-encoded data stream, which enables eNB / gNB 204 to identify the source of each spatially pre-coded data stream.
[0064] [0064] Spatial multiplexing is generally used when channel conditions are good. When channel conditions are less favorable, beam formation can be used to focus the transmission energy in one or more directions. This can be achieved through the spatial pre-coding of the data for transmission through multiple antennas. To achieve good coverage at the edges of the cell, a single current beam forming transmission can be used in combination with the diversity of transmission.
[0065] [0065] In the following detailed description, various aspects of an access network will be described with reference to a MIMO system that supports OFDM in the DL. OFDM is a widespread spectrum technique that modulates data through numerous subcarriers within an OFDM symbol. Subcarriers are separated at precise frequencies. Spacing provides an “orthogonality” that allows a receiver to retrieve data from subcarriers. In the time domain, a protection interval (for example, cyclic prefix) can be added to each OFDM symbol to combat inter-OFDM symbol interference. UL can use SC-FDMA in the form of an OFFT signal broadcast by DFT to compensate for the high average to peak power ratio (PAPR).
[0066] [0066] Figure 3 is a diagram 300 that illustrates an example of a LTE downlink frame (DL) structure. One frame (10 ms) can be divided into 10 equally sized subframes. Each subframe can include two consecutive time slots. A resource grid can be used to represent two time slots, where each time slot includes a resource block. The resource grid is divided into multiple resource elements. In LTE, for a normal cyclic prefix, a resource block contains 12 consecutive subcarriers in the frequency domain and 7 consecutive OFDM symbols in the time domain, for a total of 84 resource elements. For an extended cyclic prefix, a resource block contains 12 consecutive subcarriers in the frequency domain and 6 consecutive OFDM symbols in the time domain, for a total of 72 resource elements. In other exemplary communication systems, such as a 5G or NR communication system, other numbers of subcarriers in the frequency domain and symbols in the time domain, which provide other numbers of resource elements are possible. Some of the resource elements, indicated as R 302, 304, include DL reference signals (DL-RS). DL-RS includes cell-specific RS (CRS) (also sometimes referred to as common RS) 302 and EU-specific RS (UE-RS) 304. UE-RS 304 is transmitted in the resource blocks through which the channel corresponding physical DL (PDSCH) is mapped. The number of bits loaded by each resource element depends on the modulation scheme. Thus, the more resource blocks a UE receives and the higher the data density of the modulation scheme, the higher the data rate for the UE.
[0067] [0067] Figure 4 is a diagram 400 that illustrates an example of a UL frame structure in LTE. The resource blocks available to UL can be partitioned into a data section and a control section. The control section can be formed at the two edges of the system bandwidth and can be configurable in size. The resource blocks in the control section can be assigned to the UEs for the transmission of control information. The data section can include all feature blocks not included in the control section. The UL frame structure results in the data section that includes contiguous subcarriers, which can allow a single UE to be assigned to all contiguous subcarriers in the data section.
[0068] [0068] A UE can be assigned to resource blocks 410a, 410b in the control section to transmit control information to an eNB / gNB. The UE can also be assigned to resource blocks 420a, 420b in the data section to transmit data to eNB / gNB. The UE can transmit control information on a physical UL control channel (PUCCH) in the resource blocks assigned in the control section. The UE can transmit data or both data and control information on a shared physical UL channel (PUSCH) in the resource blocks assigned in the data section. A UL transmission can span both slots in a subframe and can skip through the frequency.
[0069] [0069] A set of resource blocks can be used to perform initial system access and achieve UL synchronization on a physical random access channel (PRACH) 430. PRACH 430 loads a random string and cannot load any signal / UL data. Each random access preamble occupies a bandwidth that corresponds to six consecutive resource blocks. The starting frequency is specified by the network. That is, the transmission of the preamble of random access is restricted to certain time and frequency resources. There is no jump in frequency for PRACH. The PRACH attempt is loaded in a single subframe (1 ms) or in a sequence of a few contiguous subframes and a UE can perform a single PRACH attempt per frame (10 ms).
[0070] [0070] Figure 5 is a diagram 500 that illustrates an example of a radio protocol architecture for the user and control plans in LTE, according to several aspects of the present disclosure. The radio protocol architecture for the UE and eNB is shown with three layers: Layer 1, Layer 2 and Layer 3. Layer 1 (L1 layer) is the bottom layer and implements several signal processing functions. physical layer. The L1 layer will be referred to in this document as the physical layer 506. Layer 2 (layer L2) 508 is above the physical layer 506 and is responsible for the link between the UE and the eNB through the physical layer 506.
[0071] [0071] On the user plane, layer L2 508 includes a media access control (MAC) sublayer 510, a radio link control (RLC) 512 sublayer and a packet data convergence protocol sublayer ( PDCP) 514, which are terminated in the eNB on the network side. Although not shown, the UE can have several upper layers above the L2 508 layer, including a network layer (e.g., IP layer) that terminates at the PDN communication port 118 on the network side and an application layer which is terminated at the other end of the connection (for example, far-end UE, server, etc.).
[0072] [0072] The PDCP 514 sublayer provides multiplexing between different radio carriers and logical channels. The PDCP 514 sublayer also provides header compression for upper layer data packets to reduce radio transmission overhead, security through data packet encryption and automatic switching support for UEs between eNBs. The RLC 512 sublayer provides segmentation and reassembly of upper layer data packets, retransmission of lost data packets and reordering of data packets to compensate for out-of-order receipt due to the hybrid automatic retry request (HARQ). The MAC 510 sublayer provides multiplexing between logical and transport channels. The MAC 510 sublayer is also responsible for allocating the various radio resources (for example, resource blocks) in a cell between the UEs. The MAC 510 sublayer is also responsible for HARQ operations.
[0073] [0073] In the control plane, the radio protocol architecture for the UE and eNB is substantially the same for the physical layer 506 and for the L2 layer 508, with the exception that there is no header compression function for the plan of control. The control plan also includes a radio resource control (RRC) 516 sublayer at Layer 3 (layer L3). The RRC 516 sublayer is responsible for obtaining radio resources (for example, radio bearers) and for configuring the lower layers using signaling from
[0074] [0074] Figure 6 is a block diagram of an eNB / gNB 610 in communication with an UE 650 in an access network in accordance with various aspects of the present disclosure. In the DL, the upper layer packets of the core network are delivered to a 675 controller / processor. The 675 controller / processor implements the L2 layer functionality. In the DL, the 675 controller / processor provides header compression, encryption, reordering and packet segmentation, multiplexing between logical and transport channels and packet segment allocations to the UE 650 based on various priority metrics. The 675 controller / processor is also responsible for HARQ operations, retransmission of lost packets and signaling to the UE 650.
[0075] [0075] The transmission processor (TX) 616 implements several signal processing functions for the L1 layer (that is, the physical layer). Signal processing functions include encoding and collation to facilitate the correction of routing error (FEC) in the UE 650 and mapping to signal constellations based on various modulation schemes (eg, phase shift binary switching (BPSK) , quadrature phase shift switching (QPSK), M-phase shift switching (M-PSK), M quadrature amplitude modulation (M-QAM)). The coded and modulated symbols are then divided into parallel streams. Each flow is then mapped to an OFDM subcarrier, multiplexed with a reference signal (for example, pilot) in the time and / or frequency domain, and then combined together with the use of a Inverse Rapid Fourier (IFFT) to produce a physical channel that carries a time domain OFDM symbol stream. The OFDM stream is spatially pre-coded to produce multiple spatial streams. Channel estimates from a 674 channel estimator can be used to determine the modulation and coding scheme, as well as for spatial processing. The channel estimate can be derived from a channel condition feedback and / or reference signal transmitted by the UE 650. Each spatial flow can then be supplied to a different antenna 620 via a separate 618TX transmitter. Each 618TX transmitter can modulate an RF carrier with a corresponding spatial flow for transmission.
[0076] [0076] In the UE 650, each 654RX receiver receives a signal through its respective antenna 652. Each 654RX receiver retrieves modulated information on an RF carrier and provides the information to the receiving processor (RX)
[0077] [0077] The 659 controller / processor deploys the L2 layer. The controller / processor can be associated with a 660 memory that stores data and program codes. The 660 memory can be termed as a computer-readable medium. At UL, the 659 controller / processor provides demultiplexing between logical and transport channels, packet reassembly, decryption, header decompression, control signal processing to retrieve upper layer packets from the core network. The upper layer packets are then delivered to a 662 data collector, which represents all protocol layers above the L2 layer. Various control signals can also be provided for data collector 662 for L3 processing. The 659 controller / processor is also responsible for error detection using a handshake (ACK) and / or negative handshake (NACK) to support HARQ operations.
[0078] [0078] In UL, a data source 667 is used to provide upper layer packets to the 659 controller / processor. Data source 667 represents all protocol layers above the L2 layer. Similar to the functionality described in conjunction with the DL transmission by the eNB 610, the 659 controller / processor deploys the L2 layer for the user plane and the control plane by providing header compression, encryption, reordering and segmentation of packet and multiplexing between logical and transport channels based on packet segment allocations via eNB 610. The 659 controller / processor is also responsible for HARQ operations, retransmission of lost packets and signaling to eNB 610.
[0079] [0079] Channel estimates derived by a 658 channel estimator from a reference or feedback signal transmitted by eNB 610 can be used by the TX 668 processor to select the appropriate modulation and coding schemes and to facilitate processing space. The spatial streams generated by the TX 668 processor can be provided for different antenna 652 by means of separate transmitters 654TX. Each 654TX transmitter can modulate an RF carrier with a corresponding spatial flow for transmission.
[0080] [0080] The UL transmission is processed in the eNB 610 in a similar way to that described in connection with the receiver function in the UE 650. Each 618RX receiver receives a signal through its respective 620 antenna. Each 618RX receiver retrieves modulated information in a RF carrier and provides the information for an RX 670 processor. The RX 670 processor can deploy the L1 layer.
[0081] [0081] The 675 controller / processor deploys the L2 layer. The controller / processor 675 can be associated with a memory 676 that stores data and program codes. Memory 676 can be termed as a computer-readable medium. At UL, the 675 controller / processor provides demultiplexing between logical and transport channels, packet reassembly, decryption, header decompression, control signal processing to retrieve upper layer packets from the UE 650. The controller / 675 processor can be provided for the core network. The 675 controller / processor is also responsible for error detection using an ACK and / or NACK protocol to support HARQ operations.
[0082] [0082] The UE 650 can also comprise one or more internal sensors, shown collectively as sensor element 669 coupled to the controller / processor 659. Sensor element 669 can comprise one or more sensors, such as a motion sensor, a location sensor, etc., configured to allow the UE 650 to determine, for example, its location, its orientation, the location of a hand or other part of human anatomy in relation to the UE 650 and, in particular, the relationship of anatomy to the arrangements of antennas on the UE 650, etc.
[0083] [0083] Figure 7 is a diagram of a device-to-device (D2D) 700 communications system, according to various aspects of the present disclosure. The device-to-device communications system 700 can be deployed over the network shown in Figure 1, and, in an exemplary embodiment, includes a plurality of wireless devices 704, 706, 708, 710. The device-to-device communications system 700 it can overlap with a cellular communications system, such as a wide-area wireless network (WW AN). Some of the wireless devices 704, 706, 708, 710 can communicate together in device-to-device (or peer-to-peer) communication using the DL / UL WW AN spectrum, some can communicate with base station 702 and some can do both. For example, as shown in Figure 7, wireless devices 708, 710 are in device-to-device communication and wireless devices 704, 706 are in device-to-device communication. Wireless devices 704, 706 also communicate with base station 702.
[0084] [0084] In one configuration, some or all of the UEs 704, 706, 708, 710 can be equipped or located in the vehicles. In such a configuration, the D2D 700 communication system can also be referred to as a vehicle to vehicle (V2V) communication system.
[0085] [0085] The exemplary methods and devices discussed above are applicable to any of a variety of wireless device-to-device communications systems, such as a FlashLinQ, WiMedia-based device-to-device communication system. , Bluetooth, ZigBee or Wi-Fi based on the IEEE 802.11 standard. To simplify the discussion, the exemplifying methods and apparatus are discussed within the context of LTE. However, an element of common skill in the art would understand that the exemplary methods and apparatus are more generally applicable to a variety of other wireless device-to-device communication systems.
[0086] [0086] Figure 8 is a diagram 800 that illustrates an example of beam formation in a low frequency wireless communication system (for example, LTE). Figure 8 includes antenna arrays 802 and 804. In an exemplary embodiment, the antenna array 802 may include a number of antenna elements (eg, antenna element 812) arranged in a grid pattern (eg, an array plane) and may be located at a base station. In an exemplary embodiment, the array of antennas 804 may include a number of antenna elements (e.g., antenna element 814) arranged in a grid pattern and may be located in a UE. As shown in Figure 8, antenna array 802 can transmit beam 806 and antenna array 804 can receive through beam 808. In an exemplary embodiment, beams 806 and 808 can reflect, scatter and / or diffract across the cluster located in area 810.
[0087] [0087] Figure 9 is a diagram 900 that illustrates the formation of beams in a high frequency wireless communication system (for example, an mmW system). Figure 9 includes antenna arrays 902 and 904. In an exemplary embodiment, antenna array 902 may include a number of antenna elements (for example, antenna element 912) arranged in a grid pattern and may be located on a grid. mmW base station. In an exemplary embodiment, the antenna array 904 may include a number of antenna elements (e.g., antenna element 914) arranged in a grid pattern and may be located in an UE. As shown in Figure 9, antenna array 902 can transmit beam 906 and antenna array 904 can receive through beam 908. In an exemplary embodiment, beams 906 and 908 can reflect, scatter and / or diffract across the cluster located in area 910.
[0088] [0088] It should be noted that the antenna array 902 in Figure 9 includes a larger number of antenna elements than the antenna array 802 in Figure 8, and that the antenna array 904 in Figure 9 includes a larger number of antenna elements than the antenna array 804 in Figure 8. The larger number of antennas in the previous scenario (in relation to the last one) is due to the higher carrier frequency that corresponds to shorter wavelengths that allows the implantation of a larger number antennas within the same opening / area. The greater number of antenna elements in the antenna arrays 902 and 904 allows the beams 906 and 908 to have a narrow half-power beam width,
[0089] [0089] In an autonomous mmW wireless communication system, high link losses (due to penetration, diffraction, reflection, etc.) can prevent the discovery of angular multiple path information. In contrast, a low frequency wireless communication system can provide a link that has a higher quality (for example, a link that has a higher SNR) than a link in a stand-alone mmW wireless communication system. This higher SNR of the low frequency wireless communication system and the coexistence of the low frequency and stand-alone mmW wireless communication systems can be used to determine the angular information and / or the relative trajectory gains for the training scheme. bundles. Since the angular information and / or the relative trajectory gains for the beam formation scheme are only determined by the relative geometries of the transmitter, receiver and dispersers, such angular information and / or relative trajectory gains are thus general, invariant in wireless communication systems of both autonomous and low frequency mmW. Although there are scenarios in which the (dominance) classification of trajectories may change with a change in carrier frequency (for example, due to differential dispersion and / or absorption losses at different frequencies), such classification may not change in most cases .
[0090] [0090] Methods for learning beam arrival and departure angles successfully at high SNR can be used to learn beam arrival and departure angles in a low frequency wireless communication system. Such methods may include Multiple Signal Classification (MUSIC), Signal Parameter Estimation through Invariant Rotation Techniques (ESPRIT), SAGE algorithm (Spatial Alternation Generalized Expectation Maximization) etc. In some scenarios, the wide beam widths of low frequency transmissions in low frequency wireless communication systems can result in poor angular accuracy. In an exemplary embodiment, the angles learned for the low-frequency wireless communication system can serve as a rough estimate for the angles (also referred to as angular information) needed for beam formation in the mmW wireless communication system. A refined estimate of the angular information for the mmW wireless communication system can be determined using the approximate angle estimate obtained through the low frequency wireless communication system as the initial value (also referred to as the source value) . For example, the refined estimate can be determined using algorithms, such as fine beam adjustment or restricted MUSIC.
[0091] [0091] The asymmetric capabilities between an mmW wireless communication system and a low frequency wireless communication system can be leveraged to reduce complexity in the algorithms used to deploy the mmW wireless communication system and the communication system low frequency wireless. For example, low-frequency wireless communication systems may use fewer antennas than mmW wireless communication systems. Such asymmetry in the number of antennas can be used to estimate the likely signal directions in algorithms, such as MUSIC, ESPRIT and / or SAGE. It should be noted that the estimation of the likely signal directions with any algorithm (for example, MUSIC, ESPRIT and / or SAGE) is based on obtaining an accurate estimate of the signal covariance matrix. For example, an accurate estimate of the signal covariance matrix can be achieved by using fewer training samples (or shorter periods of covariance matrix acquisition and angle learning) and at a lower computational cost (lower number multiplications and additions and inversion of a smaller matrix) for smaller antenna systems than for larger dimensional systems.
[0092] [0092] The asymmetric capacities between the transmitter and the receiver can be used to proportionally allocate more resources for angle determination in the low frequency wireless communication system than in the mmW wireless communication system. For example, asymmetric capabilities may include a different number of antennas on the transmitter and receiver, different beamforming capabilities (for example, digital beamforming capabilities or RF beamforming capabilities) between the transmitter and the receiver and / or less power in the receiver.
[0093] [0093] In an exemplary embodiment, the timing information of the OFDM symbol and cell frame obtained from the low frequency wireless communication system can be used as an initial value for further refinement with the wireless communication system of mmW. In such an exemplary modality, since the low-frequency wireless communication system generally provides a better SNR than the mmW wireless communication system, these quantities can be estimated more reliably at lower frequencies (for example, below 6.0 GHz) than at higher frequencies (for example, frequencies between 10.0 GHZ and 300.0 Ghz). The timing information of the OFDM symbol and / or cell frame can be determined using synchronization signals (for example, primary synchronization signals (PSSs) and secondary synchronization signals (SSSs)) that allow a UE to synchronize with the cell and detect amounts of interest, such as cell frame timing, carrier frequency shift, OFDM symbol timing, and / or cell identification (ID).
[0094] [0094] The carrier frequency shift can be estimated for the mmW wireless communication system after fine tuning around the estimate provided by the low frequency wireless communication system. For example, fine-tuning can be performed with fewer frequency assumptions. Therefore, low-frequency assistance can significantly enhance the performance of mmW protocols in relation to latency, lower SNR requirements for the same performance and / or lower computational cost.
[0095] [0095] Figure 10 is a diagram that illustrates a communication system, according to several aspects of the present disclosure. A communication system 1000 may comprise a base station (not shown) that has a base station antenna array 1002 and a UE (not shown) that has an antenna array of UE 1004. Antenna array 1002 may include a number of antenna elements (for example, antenna element 1012) arranged in a grid pattern and may be located at a base station and antenna array 1004 may include a number of antenna elements (for example, antenna 1014) arranged in a grid pattern and can be located in an UE.
[0096] [0096] Antenna array 1002 and antenna array 1004 are shown in relation to a global coordinate system (GCS) 1010. GCS 1010 is shown as a Cartesian coordinate system that has orthogonal geometric axes X, Y and Z , but it can be any coordinate system, such as a polar coordinate system. GCS 1010 can be used to define the location of antenna array 1002 and antenna array 1004 and communication beams related to antenna array 1002 and antenna array 1004.
[0097] [0097] In an exemplary mode, antenna array 1002 is shown to generate six (6) communication beams 1021, 1022, 1023, 1024, 1025 and 1026, also labeled 1 to 6 in Figure 10. In an example mode , the antenna array 1004 is shown to generate four (4) communication beams 1031, 1032, 1033 and 1034, also labeled 1 to 4 in Figure 10. It is understood that the antenna array 1002 and the antenna array 1004 they have the capacity to generate many more communication beams than the communication beams shown in Figure 10. Additionally, the communication beams generated by the antenna array 1002 and the antenna array 1004 are capable of generating transmission and receiving communication beams.
[0098] [0098] In an exemplary embodiment, at least some of the communication beams 1021, 1022, 1023, 1024, 1025 and 1026 and at least some of the communication beams 1031, 1032, 1033 and 1034 can form a link pair of beams ( GLP) and, in an exemplary embodiment, can form a number of GLPs. In an exemplary embodiment, the communication beam 1023 and the communication beam 1032 can form a BPL 1051, thus allowing the communication devices associated with the antenna array 1002 and the antenna array 1004 to communicate bidirectionally. Similarly, the communication beam 1024 and the communication beam 1033 can form a BPL 1053 and the communication beam 1025 and the communication beam 1034 can form a BPL 1055. Although three BPLs 1051, 1053 and 1055 are shown in Figure 10, there may be more or less GLPs between the antenna array 1002 and the antenna array
[0099] [0099] In an exemplary mode, the beam formation leads to greater spectral efficiency in mmW, 5G or NR systems. Analogue codebooks specific to UE and specific to base station (5G-NR not specified) can be used for bundling in UE and base station, respectively. Such codebook projects are typically proprietary at both the base station and the UE. Typical codebook / beam design restrictions include, for example, gaining antenna array versus coverage changes.
[0100] [0100] Figure 11A is a diagram 1100 of a communication system that includes a base station 106 and an UE 102 for use in wireless communication, in accordance with various aspects of the present disclosure. Base station 106 can be an example of one or more aspects of a base station described with reference to Figure 1. It can also be an example of a base station described with reference to Figure
[0101] [0101] UE 102 can be an example of one or more aspects of a UE described with reference to Figure 1. It can also be an example of a UE described with reference to Figure
[0102] [0102] UE 102 may be in bidirectional wireless communication with base station 106. In an exemplary embodiment, UE 102 may be in bidirectional wireless communication with base station 106 over a 1103 service beam, which also it can be called a BPL 1105. A service beam can be a communication beam that carries control information, called a control beam, it can be a communication beam that carries data, called a data beam, or it can be other communication channels. In an exemplary embodiment, service beam 1103 may comprise a transmission beam sent from base station 106 and a receive beam set by UE 102, and may comprise a transmission beam sent by UE 102 and a receive beam adjusted by base station 106. BPL 1105 is intended to represent bidirectional communication between the UE 102 and base station 106 using a combination of transmit and receive beams that cooperate to create the bidirectional communication link. In an exemplary mode, service beam 1103 can be one of a plurality of directional communication beams that can be configured to operationally couple UE 102 to base station 106. In an example mode, at a given time, the service 1103 and BPL 1105, may be able to provide the most robust communication link between UE 102 and base station 106.
[0103] [0103] In an exemplary embodiment, other service beams can also be established between an UE 102 and base station 106. For example, service beams 1107 can establish a GLP 1109 between UE 102 and base station 106 ; and the service beam 1111 can establish a GLP 1113 between the UE 102 and the base station 106.
[0104] [0104] In an exemplifying embodiment, one or more target or candidate bundles may also be available to provide a communication link between UE 102 and base station 106. In an exemplifying embodiment, candidate bundle 1115 represents one of a plurality available candidate beams, and is shown on a dotted line to indicate that it is not actively providing an operational communication link between the UE 102 and the base station 106. In an exemplary embodiment, the candidate beam 1115 may comprise transmission beams and base station 106 and EU 102 that can together form candidate beam 1115.
[0105] [0105] Figure 11B is a diagram 1100 of a communication system that includes a base station 106 and an UE 102 for use in wireless communication, in accordance with various aspects of the present disclosure. Figure 11B illustrates partial beam pair link failure. For example, in Figure 11B, BPL 1105 and BPL 1109 experienced RLF, due to the fact that they are unable to continue to establish and maintain a radio communication link between UE 102 and base station 106. However, the service beam 1155 and GLP 1157 are still established between UE 102 and base station 106, giving rise to the term “partial” GLP loss, where communication between UE 102 and base station 106 is still available in at least one communication beam, which is the service beam 1155 and BPL 1157 in this example.
[0106] [0106] Existing beam failure recovery procedures deal with the situation when all service control beams fail. The identification of a new candidate beam is not only based on the transmission of periodic reference signals, such as channel status information - reference signal (CSI-RS) or a period of synchronization signal (SS), from the station- base 106 to a UE 102, due to the fact that UE 102 cannot communicate with base station 106 until a new candidate beam is found and the communication is transitioned to the new candidate beam. In this previous methodology, there is a delay of at least one communication period for identification of the candidate beam after the detection of beam failure, due to the fact that the UE needs to wait for the next periodic opportunity to search for candidate beams. Multiple uplink (UL) resources must be reserved for the beam failure recovery request, so that the base station can perform a receive beam (RX) scan over and through different directions to receive that request .
[0107] [0107] In an exemplary embodiment, an effective procedure for dealing with partial beam pair (BPL) link loss is described, in which a subset of the control beams fails, but in which at least one control beam remains available for communication between an UE 102 and a base station 106. In an exemplary embodiment, multiple control beams are supported in 5G NR for robustness against beam failure.
[0108] [0108] Partial GLP loss recovery has an advantage in recovery time over existing beam failure recovery procedures, due to the fact that for partial GLP loss, there is at least one good control GLP that a UE can use it to notify a base station and immediately trigger a beam retrieval procedure, without waiting for a signal from the base station, which would be delayed by at least one communication period mentioned above.
[0109] [0109] Partial GLP loss recovery also has an advantage in resource savings, due to the fact that the newly identified GLP can be immediately transported to the base station by the UE using a remaining good control GLP without the need to reserve multiple uplink (UL) resources for RX beam scanning at the base station to receive the beam failure recovery request that the UE sends to the base station in the remaining good BPL.
[0110] [0110] In an exemplary modality, for partial GLP loss, there is at least one GLP of good control that allows a UE to notify a base station (gNB) and immediately trigger a beam recovery procedure under conditions of loss of Partial GLP.
[0111] [0111] In an exemplary modality, in the case of partial GLP loss, new candidate bundles can be identified sooner using the proposed scheme than with an existing procedure for beam failure recovery.
[0112] [0112] In an exemplary mode, instead of waiting for the next period of channel status information - reference signal (CSI-RS) or synchronization signal (SS), a UE can notify a base station (gNB) about the loss of partial GLP immediately upon failure detection with the use of a good remaining GLP, and then the UE can expect the base station (gNB) to program an aperiodic CSI-RS for a candidate beam search. As used in this document, the term “aperiodic” refers to a base station that programs a CSI-RS for a candidate beam search immediately after receiving the loss indication from the UE, and that does not wait for a CSI-RS of periodically normal occurrence.
[0113] [0113] In an exemplary embodiment, a UE can notify a base station of a partial GLP loss detected by sending a specific uplink control (PUCCH) physical channel communication similar to a programming request (SR) which can be defined to indicate partial GLP loss.
[0114] [0114] In an exemplary embodiment, a UE can notify a base station of a partial GLP loss detected by a base station, allowing aperiodic beam reporting initiated by a UE whenever the partial GLP loss is detected by a HUH. Aperiodic beam reporting can be performed by, for example, a PUCCH signal or by an uplink medium access control (MAC) control (CE) element in an uplink shared physical channel communication ( PUSCH) from an UE.
[0115] [0115] A UE can transmit a request to add GLP with new beam information. The BPL addition request can be defined as a specific PUCCH signal similar to a programming request (SR), but with additional bits to indicate new beam information.
[0116] [0116] In another exemplary embodiment, a specific PUCCH signal similar to SR, but with additional bits to capture both the partial loss indication of BPL and the request for addition of BPL can be used by a UE to initiate the beam transition of communication for a candidate beam.
[0117] [0117] Figure 12 is a flow chart that illustrates an example of a method for communication, according to several aspects of the present disclosure. The blocks in method 1200 can be made in or out of the order shown and, in some embodiments, they can be made, at least in part, in parallel.
[0118] [0118] In block 1202, a UE performs the detection of communication beam failure.
[0119] [0119] In block 1204, it is determined by the UE if any communication control beams have failed.
[0120] [0120] If, in block 1204, it is determined that there are no control beam failures, then the process returns to block 1202, where the UE continues to perform the communication beam failure detection. If, in block 1204, it is determined that any control beam has spoken, then the process proceeds to block 1206.
[0121] [0121] In block 1206, the UE determines whether at least one control beam remains available for communication with a base station. If, at block 1206, the UE determines that there is no control beam available for communication with a base station, then the process proceeds to block 1208, where the UE follows existing beam failure recovery procedures where all communication beams have failed.
[0122] [0122] If, in block 1206, the UE determines that there is at least one control beam available for communication with a base station, then the process proceeds to block 1210. [0123] In block 1210, a UE can notify a base station on partial GLP loss, explicitly or implicitly, using at least one available communication control beam.
[0124] [0124] For example, a UE can notify a base station of partial GLP loss, either explicitly or implicitly, so that the base station can take additional actions for beam management. As used herein, the term “explicit notification” means that a UE proactively and without waiting for a periodic CSI-RS or SS signal from the base station explicitly notifies the base station about the partial GLP loss event.
[0125] [0125] The term “implicit notification” can cover many mechanisms, for example, the notification can be a request from the UE for a base station to trigger aperiodic CSI-RS and / or aperiodic beam reports, etc.
[0126] [0126] In an exemplary modality, at least two options are proposed for the UE to transmit this “explicit or implicit” notification to the base station regarding the partial GLP loss.
[0127] [0127] In an exemplary modality, a new PUCCH format similar to a programming request (SR) can be defined in the physical layer for this notification.
[0128] [0128] In an exemplary embodiment, a general PUCCH request signal can be used to cover UE requests. In LTE, only one request signal is defined in the PUCCH: An SR to request a grant for UL resources. In 5GNR, an UE can send UL requests for different purposes. For example, an SR, a partial GLP loss indication signal, a beam refinement request, an aperiodic beam report request and a beam failure recovery request, etc.
[0129] [0129] In an exemplary embodiment, an on-off PUCCH signal with information bits to indicate different types of requests can be used by the UE to send the indication of partial GLP loss to the base station. Additional bits can also be loaded by this PUCCH signal to carry other related information, for example, to indicate a new beam index in case of a beam failure recovery request or to indicate failed GLP indexes in the case of indication partial loss.
[0130] [0130] In an exemplary mode, a PUCCH signal on-off with different signal sequences, for example, with the use of different cyclic shifts, to indicate different types of requests, can be used by the UE. A periodic PUCCH resource can be reserved for the UE to send the appropriate request when necessary. For example, different cyclic shifts can be assigned to a UE and each cyclic shift can correspond to one or more of the following types of PUCCH requests: an SR, an indication of partial GLP loss, a beam refining request, a an aperiodic beam report request and a beam failure recovery request, etc.
[0131] [0131] In another exemplary embodiment, a UE can transmit this "explicit or implicit" notification to the base station regarding partial GLP loss with the use of a new control element (CE) for medium access control ( Uplink (UL) MAC that can be defined at the MAC layer for this notification. A UL MAC CE may be able to trigger an SR similar to a BSR MAC CE so that it can be transmitted in time with the allocated PUSCH resource. For this option, changes are implemented in the MAC layer and no changes are implemented in the physical layer.
[0132] [0132] In block 1214, in an exemplary modality, after receiving notification of GLP loss from the UE, the base station can send an aperiodic CSI-RS transmission and trigger an aperiodic beam report from the UE .
[0133] [0133] In block 1216, in an exemplary mode, after receiving notification of GLP loss from the UE, the base station can trigger an aperiodic beam report from the UE based on a periodic CSI-RS signal or a periodic SS signal.
[0134] [0134] In block 1218, in an exemplary modality, after receiving notification of GLP loss from the UE, the base station can update at least some of its settings, after which the process returns to block 1208. For For example, the base station can reduce the periodicity (the period), or the transmission frequency, of the SS signal or the CSI-RS signal, so that the UE can discover a new candidate beam earlier by carrying out the recovery from beam failure indicated by block 1208.
[0135] [0135] In block 1222, after receiving the aperiodic CSI-RS transmission (block 1214) from the base station or the aperiodic beam report request based on a periodic CSI-RS signal or a periodic SS signal (block 1216) from the base station, the UE transmits a beam status report with new beam information to the base station.
[0136] [0136] In block 1224, the base station transmits a new BPL addition message to the UE based on the UE beam status report sent in block 1222.
[0137] [0137] The steps in blocks 1210, 1214, 1216, 1218, 1222 and 1224 occur over one of the good control GLPs.
[0138] [0138] There are multiple possible options for dealing with partial GLP loss.
[0139] [0139] In an exemplary modality (alternative 1) with reference to blocks 1210, 1214, 1222 and 1224 of Figure 12, (a, b1, c, d), after receiving the notification of loss of GLP from the UE, the station -base schedules an aperiodic CSI-RS transmission for the UE to perform a candidate beam search, and the base station also fires an aperiodic beam status report from the UE at a specified time after transmitting the CSI-RS aperiodic. In this modality, a candidate beam can be found and reported to the base station immediately, without the need to wait for the next CSI-RS or periodic SS opportunity.
[0140] [0140] In another exemplary modality (alternative 2) with reference to blocks 1210, 1216, 1222 and 1224 of Figure 12, (a, b2, c, d), the candidate beam search is still based on a CSI- Periodic RS or SS. However, upon receipt of the UE's partial GLP loss notification, the base station fires an aperiodic beam status report from the UE to obtain new candidate beams identified from the UE. In an exemplary mode, the newly identified candidate beams are reported by the UE using a flawless control GLP, so the base station does not need to perform an RX beam scan to receive the beam report message. from the UE. This approach can be useful in the situation where the next periodic CSI-RS or SS opportunity is near; thus, there will be no long delay if the UE waits for that next periodic CSI-RS or SS opportunity from the base station.
[0141] [0141] In another exemplary modality (alternative 3) with reference to blocks 1210, 1218, 1222 and 1224 of Figure 12, (a, b3, c, d), an existing beam failure recovery procedure is reused. However, after receiving notification of partial GLP loss from the UE, the base station can update some of its settings (block 1218) so that a recovery procedure can be done more efficiently. For example, the base station can reduce the periodicity of the CSI-RS signal or the SS signal, so that the candidate beams can be found earlier. The base station can also update the PRACH configuration to request a beam failure recovery.
[0142] [0142] In another example example (alternative 4), the UE can only use the existing beam failure recovery process.
[0143] [0143] Upon detecting partial GLP loss, a UE can decide whether to send a notification to a base station. If a notification is sent by the UE to a base station, the base station can determine whether to consider the method of blocks 1214, 1222, 1224 (alternative 1); blocks 1216, 1222, 1224 (alternative 2); or blocks 1218, 1222, 1224 (alternative 3), based on your situation. For example, alternative 1 can be used if the time for the next periodic CSI-RS or SS opportunity exceeds a threshold.
[0144] [0144] Alternative 2 can be used if the time for the next periodic CSI-RS or SS opportunity is below a threshold.
[0145] [0145] Alternative 3 can be used if the base station is unable to program an aperiodic CSI-RS or trigger a beam report due to certain restrictions.
[0146] [0146] If none of the alternatives 1, 2 or 3 is possible, the UE can use the existing beam failure recovery procedure.
[0147] [0147] In an exemplifying modality, a base station can identify a control GLP without downlink failure (DL) through a “reciprocal beam case”, for example, with the use of the RX beam of the base stations in the which indication of loss of GLP from the UE was communicated, or through a “non-reciprocal beam case”, in which the DL beam associated with the GLP in which the indication of loss of GLP from the UE was communicated.
[0148] [0148] Figure 13 is a functional block diagram of a 1300 device for a communication system, according to several aspects of the present disclosure. Apparatus 1300 comprises means 1302 for carrying out beam failure detection. In certain embodiments, the means 1302 for performing beam failure detection can be configured to perform one or more of the functions described in operating block 1202 of method 1200 (Figure 12). In an exemplary embodiment, the means 1302 for performing beam failure detection may comprise the UE 650 which performs beam failure detection using, for example, controller / processor 659, memory 660, processor RX 656, receiver 654 and related circuitry (Figure 6).
[0149] [0149] Apparatus 1300 further comprises means 1304 for determining whether any communication control beam has failed. In certain embodiments, the means 1304 for determining any failed communication control beam can be configured to perform one or more of the functions described in method 1200 operating block 1204 (Figure 12). In an exemplary embodiment, means 1304 for determining whether any communication control beam has failed can comprise the UE 650 which performs beam failure detection using, for example, controller / processor 659, memory 660, processor RX 656 , receiver 654 and related circuitry (Figure 6).
[0150] [0150] The apparatus 1300 additionally comprises means 1306 for determining whether at least one communication control beam is available. In certain embodiments, the means 1306 for determining whether at least one communication control beam is available can be configured to perform one or more of the functions described in operating block 1206 of method 1200 (Figure 12). In an exemplary embodiment, means 1306 for determining whether at least one communication control beam is available may comprise the UE 650 which determines that the control beam may be available using, for example, controller / processor 659, memory 660, RX 656 processor, 654 receiver and related circuitry (Figure 6).
[0151] [0151] The apparatus 1300 additionally comprises means 1308 for following existing beam failure recovery procedures. In certain embodiments, the means 1308 for following the existing beam failure recovery procedures can be configured to perform one or more of the functions described in operating block 1208 of method 1200 (Figure 12). In an exemplary embodiment, means 1308 for following existing beam failure recovery procedures can comprise the UE 650 which follows existing beam failure recovery procedures using, for example, controller / processor 659, memory 660 , RX 656 processor, 654 receiver, and related circuitry (Figure 6).
[0152] [0152] The device 1300 additionally comprises means 1310 to notify the base station about the loss of GLP, explicitly or implicitly, with the use of at least one available control beam. In certain embodiments, the means 1310 to notify a base station about the loss of GLP, explicitly or implicitly, using at least one available control beam, can be configured to perform one or more of the functions described in the operating block 1210 of method 1200 (Figure 12). In an exemplary embodiment, the means 1310 to notify the base station about the loss of GLP, explicitly or implicitly, with the use of at least one available control beam, can comprise the UE 650 that communicates the partial GLP loss to the station -based on an existing control beam using, for example, the controller / processor 659, memory 660, processor RX 656, receiver 654, processor TX 668, transmitter 654 and set of related circuits (Figure 6).
[0153] [0153] The apparatus 1300 additionally comprises means 1314 for programming an aperiodic CSI-RS transmission and triggering an aperiodic beam status report from a UE. In certain embodiments, the means 1314 for programming an aperiodic CSI-RS transmission and triggering an aperiodic beam status report from a UE can be configured to perform one or more of the functions described in operating block 1214 of method 1200 ( Figure 12). In an exemplary embodiment, the means 1314 for scheduling an aperiodic CSI-RS transmission and triggering an aperiodic beam status report from a UE can comprise base station 610 that schedules an aperiodic CSI-RS transmission with use , for example, controller / processor 675, memory 676, processor TX 616, transmitter 618 and related circuitry (Figure 6).
[0154] [0154] The apparatus 1300 further comprises means 1316 for triggering an aperiodic beam situation report from a UE based on a periodic CSI-RS or SS. In certain embodiments, the means 1316 for triggering an aperiodic beam situation report from a
[0155] [0155] The device 1300 additionally comprises means 1318 for updating configurations. In certain embodiments, the means 1318 for updating configurations can be configured to perform one or more of the functions described in operating block 1218 of method 1200 (Figure 12). In an exemplary embodiment, means 1318 for updating configurations may comprise base station 610 that updates one or more configurations, using, for example, controller / processor 675, memory 676, processor TX 616, transmitter 618, of the controller / processor 659, memory 660, processor TX 668, transmitter 654 and related circuitry (Figure 6).
[0156] [0156] The device 1300 additionally comprises means 1322 for transmitting a beam status report with new beam information. In certain embodiments, the means 1322 for transmitting a beam report with new beam information can be configured to perform one or more of the functions described in operating block 1222 of method 1200 (Figure 12). In an exemplary embodiment, the means 1322 for transmitting a beam status report with new beam information can comprise the UE 650, after receiving the aperiodic CSI-RS transmission (block 1314) from the base station or at the request of the aperiodic beam report based on a periodic CSI-RS signal or a periodic SS signal (block 1316) from the base station, which transmits a beam report with new beam information to the base station with use, for example example, controller / processor 659, memory 660, processor RX 656, receiver 654 and related circuitry (Figure 6).
[0157] [0157] Apparatus 1300 additionally comprises means 1324 for transmitting a new GLP addition message based on the UE beam status report. In certain embodiments, the means 1324 for transmitting a new BPL addition message based on the UE beam status report can be configured to perform one or more of the functions described in operating block 1224 of method 1200 (Figure 12). In an exemplary embodiment, the means 1324 for transmitting a new GLP addition message based on the UE beam status report can comprise base station 610 which sends the new GLP information to the UE with use, for example , controller / processor 675, memory 676, processor TX 616, transmitter 618, controller / processor 659, memory 660, processor TX 668,
[0158] [0158] In an exemplary modality, for an access network, multiple control links can arise from different cells or base stations. For example, a UE can have multiple links through different technologies, for example carrier aggregation (CA), dual connectivity, etc. For integrated access and backhaul, a backhaul node can connect with multiple nodes to improve the robustness of the communication channel. For partial GLP loss that occurs in a multi-node environment, a node with a good link can assist the node with a failed link for beam recovery.
[0159] [0159] Figure 14 is a 1400 call flow diagram for a communication system, according to various aspects of the present disclosure. The call flow diagram 1400 shows a UE 1402, referred to as UEF, which can refer to a UE associated with an access network or a backhaul network. A first node, Node 1 1406, can be coupled to UEF 1402 and a second node, Node 2 1407. As shown in Figure 14, the communication link between UEF 1402 and node 1 1406 has failed. The first node, Node 1 1406, and the second node, Node 2 1407, can be communication devices, such as, for example, base stations or other communication devices.
[0160] [0160] In this example mode, the node (Node 2 1407) with the good communication link assists the node (Node 1 1406) with the failed link for beam recovery.
[0161] [0161] On call 1410, UEF 1402 notifies Node 2 1407 about the loss of BPL from UEF with Node 1 1406.
[0162] [0162] On call 1412, Node 2 1407 forwards the notification of loss of GLP to Node 1 1406.
[0163] [0163] On call 1414, Node 1 1406 responds to Node 2 1407 with a resource allocation in a CSI-RS communication for beam search.
[0164] [0164] On call 1416, Node 2 1407 performs cross node programming of an aperiodic CSI-RS and triggers a beam status report to Node 1 1406. On call 1418, Node 1 1406 transmits a CSI transmission -Periodic RS for UEF 1402 to perform a beam scan.
[0166] [0166] In case 1420, UEF 1402 identifies candidate communication beams for Node 1 1406.
[0167] [0167] On call 1422, UEF 1402 sends a beam status report with candidate beams to Node 1 1406 to Node 2 1407.
[0168] [0168] On call 1424, Node 2 1407 forwards the beam report to Node 1 1406.
[0169] [0169] On call 1426, Node 1 1406 responds to Node 2 1407 with a new BPL addition communication.
[0170] [0170] On call 1428, Node 2 1407 sends the new BPL addition message to Node 1 1406 to UEF 1402.
[0171] [0171] On call 1430, UEF 1402 and Node 1 1406 now communicate about the newly added GLP.
[0172] [0172] As shown in Figure 14, steps 1210, 1214, 1222 and 1224 (alternative 1) of Figure 12 are performed between UEF 1402 and Node 2 1407 of the good link to help establish the new link between UEF 1402 and Node 1
[0173] [0173] Figure 15 is a 1500 call flow diagram for a communication system, according to various aspects of the present disclosure. The call flow diagram 1500 shows UEF 1402, the first node, Node 1 1406, and the second node, Node 2 1407. As shown in Figure 15, the communication link between UEF 1402 and node 1 1406 has failed.
[0174] [0174] In this example mode, the node (Node 2 1407) with the good communication link assists the node (Node 1 1406) with the failed link for beam recovery.
[0175] [0175] In call 1510, UEF 1402 notifies Node 2 1407 about the loss of BPL from UEF with Node 1 1406.
[0176] [0176] On call 1512, Node 2 1407 forwards notification of GLP loss to Node 1 1406.
[0177] [0177] On call 1514, Node 1 1406 responds to Node 2 1407 with a resource allocation in a CSI-RS communication for beam search.
[0178] [0178] On call 1516, Node 2 1407 triggers UEF 1402 to generate an aperiodic beam status report for Node 1 1406.
[0179] [0179] On call 1518, Node 1 1406 transmits a periodic CSI-RS transmission or SS transmission to the
[0180] [0180] In case 1520, UEF 1402 identifies the candidate communication channels for Node 1 1406.
[0181] [0181] On call 1522, UEF 1402 sends a beam status report with the candidate beams to Node 1 1406 to Node 2 1407.
[0182] [0182] On call 1524, Node 2 1407 forwards the beam status report to Node 1 1406.
[0183] [0183] On call 1526, Node 1 1406 responds to Node 2 1407 with a new BPL addition communication.
[0184] [0184] On call 1528, Node 2 1407 sends the new BPL addition message to Node 1 1406 to UEF 1402.
[0185] [0185] On call 1530, UEF 1402 and Node 1 1406 now communicate about the newly added GLP.
[0186] [0186] As shown in Figure 15, steps 1210, 1216, 1222 and 1224 (alternative 2) in Figure 12 are performed similarly to that shown in Figure 14, except that in Figure 15, the node (Node 2 1407) with the good link does not perform cross node programming of an aperiodic CSI-RS transmission.
[0187] [0187] Figure 16 is a 1600 call flow diagram for a communication system, according to various aspects of the present disclosure. The call flow diagram 1600 shows UEF 1402, the first node, Node 1 1406, and the second node, Node 2 1407. As shown in Figure 16, the communication link between UEF 1402 and node 1 1406 has failed.
[0188] [0188] In this example mode, the node (Node 2 1407) with the good communication link helps the node (Node 1
[0189] [0189] In call 1610, UEF 1402 notifies Node 2 1407 about the loss of BPL from UEF with Node 1 1406.
[0190] [0190] On call 1612, Node 2 1407 forwards the notification of loss of GLP to Node 1 1406.
[0191] [0191] On call 1614, Node 1 1406 updates the settings for the beam failure recovery procedure.
[0192] [0192] On call 1616, Node 2 1407 relays the updated configuration from Node 1 1406 to UEF 1402.
[0193] [0193] On call 1618, UEF 1402 and Node 1 1406 perform beam failure recovery according to the updated configuration.
[0194] [0194] As shown in Figure 16, steps 1210, 1218, 1222 and 1224 (alternative 3) of Figure 12 are performed so that the node (Node 2 1407) with good link helps the node (Node 1 1406) with the failed link forwarding the loss indication from UEF 1402 and retransmitting updated configurations to UEF 1402. There is no cross-node programming and there is less coordination and less delay between the node (Node 2 1407) with good link and the node ( Node 1 1406) with the failed link.
[0195] [0195] Figure 17 is a diagram for a 1700 communication system, according to several aspects of the present disclosure. The 1700 communication system shows a UEF 1702, a Node 1 1706, a Node 2 1707, a Node 3 1708 and a Node 4 1709. In this example, a well-connected node can also contact other backup nodes that can be in energy saving mode to engage in the beam failure recovery procedure. For example, upon receiving the indication of loss of GLP between UEF 1702 and Node 1 1706, Node 2 1707 can activate a Node 3 1708 and Node 4 1709 backup and request that they transmit SS signals more often. , so that UEF 1702 has more opportunities to identify a candidate beam.
[0196] [0196] Figure 18 is a 1800 call flow diagram for a communication system, according to various aspects of the present disclosure. The call flow diagram 1800 shows an UE 1802 that communicates with a base station 1806.
[0197] [0197] On call 1810, UE 1802 notifies base station 1806 of loss of UE GLP with base station
[0198] [0198] On call 1818, the base station can program an aperiodic CSI-RS for the UE and trigger an aperiodic beam report from the UE. Alternatively, the base station can trigger an aperiodic beam report from the UE based on a periodic CSI-RS or SS.
[0199] [0199] On call 1822, UE 1802 sends a beam status report with candidate beams to base station 1806.
[0200] [0200] On call 1826, the base station sends a new BPL addition message to UE 1802.
[0201] [0201] On call 1830, UE 1802 and base station 1806 now communicate about the newly added GLP.
[0202] [0202] In an exemplary embodiment, partial BPL loss recovery uses at least one good control BPL for the UE to communicate with the base station. With the use of this good BPL control, the aperiodic CSI-RS can be triggered for the UE to search for new candidate bundles immediately after the detection of BPL loss, without the need to wait for the next periodic CSI-RS or SS opportunity.
[0203] [0203] In an exemplary modality, for partial BPL loss recovery, the recovery request message can be sent through the good BPL, for example, in a PUCCH communication, and the network only needs to reserve the number of resources from uplink (UL) corresponding to the number of service control beams.
[0204] [0204] It is desirable to deal with partial GLP loss in the existing beam management structure as much as possible. The existing beam management framework defines procedures for beam determination, beam measurement, beam reporting and beam scanning, but all of these procedures are triggered and controlled by the network.
[0205] [0205] In an exemplary embodiment, a request message initiated by the UE can be defined at Layer 1 or Layer 2 to notify a base station of partial GLP loss, explicitly or implicitly, and to request additional procedures for managing beam immediately after the detection of partial GLP loss from the UE.
[0206] [0206] In an exemplary embodiment, a base station operating in the 5G or NR environment can support a request message initiated by the UE at Layer 1 or Layer 2 in order for the UE to notify the base station about the partial GLP loss, explicitly or implicitly, and request additional beam management steps. For the case of partial GLP loss, the UE may transmit the message of partial GLP loss recovery request using, for example, a PUCCH communication with the use of good GLP. The network can reserve the number of UL resources that correspond to the number of service control beams, so that the UE can use a resource that corresponds to the good BPL to transmit the request.
[0207] [0207] In an exemplary mode, a base station operating in the 5G or NR environment can reserve the number of UL resources that correspond to the number of service control beams. The UE can transmit the partial GLP loss recovery request message, for example, in a PUCCH communication using the UL resource that corresponds to the good GLP. In LTE, only one request signal is defined in the PUCCH, which is the programming request (SR) to request the UL grant. However, in 5G or NR with beam management, there could be different types of request in addition to SR, for example, a request for partial GLP loss recovery, a beam refinement request, a beam failure recovery request about PUCCH. A new PUCCH format can be designed to indicate different types of requests initiated by the UE. Since the request message is triggered by an UE based on certain trigger conditions, to save energy from the UE, the request message must be an on / off signal.
[0208] [0208] In an exemplary mode, a base station operating in the 5G or NR environment can support the design of a new on-off PUCCH format to indicate different request messages initiated by a UE, one of which request is related to the recovery of partial GLP loss.
[0209] [0209] The techniques described in this document can be used for several wireless communication systems such as CDMA, TDMA, FDMA, OFDMA, SC-FDMA and other systems. The terms "system" and "network" are often used interchangeably. A CDMA system can deploy radio technology such as CDMA2000, Universal Terrestrial Radio Access (UTRA), etc. CDMA2000 covers the IS-2000, IS-95 and IS-856 standards. IS-2000 Versions 0 and A are commonly referred to as CDMA2000 1x, 1x, etc. IS-856 (TIA-856) is commonly referred to as CDMA2000 1xEV-DO, High Rate Packet Data (HRPD), etc. UTRA includes Broadband CDMA (WCDMA) and other CDMA variants. The TDMA system can deploy radio technology like the Global System for Mobile Communications (GSM). An OFDMA system can deploy radio technology such as Ultra-Mobile Broadband (UMB), Evolved UTRA (E-UTRA), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash-OFDM ™, etc. UTRA and E-UTRA are part of the Universal Mobile Telecommunication System (UMTS). The Long Term Evolution (LTE) of 3GPP and LTE-Advanced (LTE-A) are new versions of UMTS that use E-UTRA. UTRA, E-UTRA, UMTS, LTE, LTE-A and GSM are described in documents from an organization called the “Third Generation Partnership Project” (3GPP). CDMA2000 and UMB are described in the documents of an organization called “Third Generation Partnership Project 2” (3GPP2). The techniques described in this document can be used for the radio systems and technologies mentioned above as well as other radio systems and technologies, including cellular communications (for example, LTE) over unlicensed and / or shared bandwidth. The above description, however, describes an LTE / LTE-A system for example purposes, and LTE terminology is used in much of the above description, although the techniques are applicable in addition to LTE / LTE-A applications.
[0210] [0210] The detailed description presented above together with the accompanying drawings describes examples and does not represent the only examples that can be implanted or that are within the scope of the claims. The terms "example" and "example", when used in this description, mean "that serves as an example, case or illustration", and not "preferential" or "advantageous over other examples". The detailed description includes specific details for the purpose of providing an understanding of the techniques described. These techniques, however, can be practiced without these specific details. In some cases, well-known structures and devices are shown in the form of a block diagram to avoid concealing the concepts of the examples described.
[0211] [0211] Information and signals can be represented using any one of a variety of different technologies and techniques. For example, data, instructions, commands, information, signals, bits, symbols and integrated circuits that can be mentioned throughout the above description can be represented by voltages, currents, electromagnetic waves, particles or magnetic fields, particles or optical fields or any combination thereof.
[0212] [0212] The various blocks and illustrative components described in conjunction with the disclosure in this document can be deployed or performed with a general purpose processor, digital signal processor (DSP), ASIC, FPGA or other programmable logic device, transistor or discrete gate logic, discrete hardware components or any combination thereof designed to perform the functions described in this document. A general purpose processor can be a microprocessor, however, alternatively the processor can be any conventional processor, controller, microcontroller or state machine. A processor can also be deployed as a combination of computing devices, for example, a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors together with a DSP core or any other such configuration.
[0213] [0213] The functions described in this document can be implemented in hardware, software executed by a processor, firmware or any combination thereof. If implemented in software run by a processor, the functions can be stored in or transmitted as one or more instructions or code on a computer-readable medium. Other examples and deployments are covered by the scope and spirit of the disclosure and the attached claims. For example, due to the nature of software, the functions described above can be implemented using software executed by a processor, hardware, firmware, wired connection or combinations of any of them. Role deployment features can also be physically located in various positions, including being distributed so that portions of roles are deployed in different physical locations. As used in this document, including in the claims, the term “and / or”, when used in a list of two or more items, means that any of the items listed may be used by itself, or any combination of two or more among the listed items can be employed. For example, if a composition is described as containing components A, B and / or C, the composition can contain A alone; B alone; C alone; A and B in combination; A and C in combination; B and C in combination; or A, B and C in combination. In addition, as used herein, including in claims, “or” as used in a list of items (for example, a list of items preceded by a phrase such as “at least one of” or “one or more of”) indicates a disjunctive list, so that, for example, a list of “at least one of A, B or C” means A or B or C or AB or AC or BC or ABC (ie, A and B and C) .
[0214] [0214] Computer-readable media includes both computer storage media and communication media that include any media that facilitates the transfer of a computer program from one place to another. A storage medium can be any available medium that can be accessed by a general purpose or a specific purpose computer. By way of example, and not by way of limitation, computer-readable media may comprise RAM, ROM, EEPROM, flash memory, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices or any other media which can be used to load or store a desired program code medium in the form of instructions or data structures and which can be accessed by a general purpose or specific purpose computer or a general purpose or specific purpose processor. In addition, any connection is properly called a computer-readable medium. For example, if the software is transmitted from a website, server or other remote source using a coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL) or wireless technologies such as infrared , radio and microwave, then coaxial cable, fiber optic cable, twisted pair, DSL or wireless technologies such as infrared, radio and microwave are included in the media definition. The magnetic disk and the optical disk, as used in this document, include compact disk (CD), laser disk, optical disk, digital versatile disk (DVD), floppy disk and Blu-ray disk, in which the magnetic disks normally reproduce the data magnetically, while optical discs reproduce data optically with lasers. The combinations of the above are also included in the scope of computer-readable media.
[0215] [0215] As used in this description, the terms "component", "database", "module", "system" and the like are intended to refer to an entity related to computer, hardware, firmware, a combination of hardware and software, software, or running software. As an example, a component can be, but is not limited to, a process executed on a processor, a processor, an object, an executable, a chain of execution, instructions executable by a computer, a program and / or a computer. By way of illustration, both an application running on a computing device and the computing device can be a component. One or more components can reside within a process and / or execution thread, and a component can be located on a computer and / or distributed between two or more computers. In addition, these components can run from a variety of computer-readable media that have multiple data structures stored in them. Components can communicate via local and / or remote processes as per a signal that has one or more data packets (for example, data from a component that interacts with another component on a local system, system distributed and / or over a network such as the Internet with other systems using the signal).
[0216] [0216] Although aspects and modalities are described in this application by way of illustration for some examples, those skilled in the art will understand that additional deployments and use cases can arise in many different layouts and scenarios. The innovations described in this document can be implemented through many types of platforms, devices, systems, formats, sizes, packaging arrangements. For example, modalities and / or uses may arise through integrated chip modalities and other devices based on non-module components (for example, end-user devices, vehicles, communication devices, computing devices, industrial equipment, buy / sell devices, medical devices, AI-enabled devices, etc.). Although some examples may or may not be specifically directed to use cases or applications, a wide variety of applicability of the described innovations can occur. Deployments can vary in a spectrum from chip-level or modular components to non-modular, non-modular level deployments and in addition to OEM systems, devices, distributed or aggregated that incorporate one or more aspects of the described innovations. In some practical configurations, devices that incorporate the aspects and features described may also necessarily include additional components and resources for the implementation and practice of the claimed and described modalities. For example, wireless signal transmission and reception necessarily includes several components for analog and digital purposes (for example, hardware components including antenna, RF chains, power amplifiers, modulators, temporary memory, processor (or processors), interleaver , adder / adder, etc.). It is intended that the innovations described in this document can be practiced on a wide variety of devices, chip-level components, systems, distributed arrangements, end-user devices, etc. of varying sizes, shapes and constitution.
[0217] [0217] The previous description of the disclosure is provided to allow a person skilled in the art to produce or use the disclosure. Various modifications to the disclosure will be readily apparent to those skilled in the art and the generic principles defined in this document can be applied to other variations without departing from the scope of the disclosure. Accordingly, the disclosure is not intended to be limited to the examples and designs described in this document, but must be compatible with the broadest scope consistent with the principles and innovative features disclosed in this document.

权利要求:
Claims (30)
[1]
1. A method for communication comprising: determining whether any of a plurality of communication control beams has failed; identify at least one active communication control beam in the plurality of communication control beams; and communicating a partial beam pair (BPL) link loss communication on at least one active communication control beam.
[2]
2. Method, according to claim 1, which further comprises: upon receipt of the partial beam pair link loss (BPL) communication, program an aperiodic channel state information reference signal communication (CSI- RS) and trigger an aperiodic beam status report; transmit the beam status report with new beam information; and transmit a new GLP addition message based on the beam status report.
[3]
3. Method, according to claim 1, which further comprises: upon receipt of the partial beam pair link loss (GLP) communication, trigger an aperiodic beam situation report on which the measurements are based at least one of a channel status information reference signal communication (CSI-RS)
periodic and periodic sync signal communication (SS); transmit the beam status report with new beam information; and transmit a new GLP addition message based on the beam status report.
[4]
4. Method, according to claim 1, which further comprises: upon receipt of the partial beam pair link loss (BPL) communication, update a base station configuration and follow a beam failure recovery process .
[5]
5. Method according to claim 1, wherein the partial beam pair (BPL) link loss communication on at least one active communication control beam is sent using a physical control channel communication uplink (PUCCH).
[6]
6. Method according to claim 1, wherein the partial beam pair (BPL) link loss communication on at least one active communication control beam is sent using a control element (CE) uplink (UL) medium access control (MAC) on a uplink shared physical channel (PUSCH) communication.
[7]
7. The method of claim 1, wherein the partial beam pair (BPL) link loss communication is sent to a communication device on a second node in the name of a communication device on a first node, the communication device at the first node experiencing partial beam pair (GLP) link loss.
[8]
A method according to claim 7, wherein the communication device on the second node notifies the communication device on the first node of partial beam pair (GLP) link loss.
[9]
9. A communication system comprising: user equipment (UE) configured to determine whether any of a plurality of communication control beams has failed; the UE configured to identify at least one active communication control beam in the plurality of communication control beams; and the UE configured to communicate a partial beam pair (BPL) link loss communication on at least one active communication control beam.
[10]
10. System according to claim 9, which further comprises: upon receipt of the partial beam pair link loss (BPL) communication, a base station configured to program a status information reference signal communication aperiodic channel (CSI-RS) and configured to trigger an aperiodic beam status report from a UE; the UE configured to transmit the beam status report with new beam information to the base station; and the base station configured to transmit a new GLP addition message based on the beam status report to the UE.
[11]
11. System according to claim 9, which further comprises: upon receipt of the partial beam pair link loss (BPL) communication, a base station configured to trigger an aperiodic beam status report from the UE, where the measurements are based on at least one of a periodic channel status information reference signal communication (CSI-RS) and a periodic synchronization signal communication (SS); the UE configured to transmit the beam status report with new beam information to the base station; and the base station configured to transmit a new GLP addition message based on the beam status report to the UE.
[12]
12. System, according to claim 9, which further comprises: upon receipt of partial beam pair link loss (BPL) communication, a base station configured to update the base station configuration and follow a process beam failure recovery.
[13]
13. The system of claim 9, wherein the partial beam pair (BPL) link loss communication on at least one active communication control beam is sent using a physical control channel communication. uplink (PUCCH).
[14]
14. System according to claim 9, in which the partial beam pair (BPL) link loss communication in at least one active communication control beam is sent using a control element (CE) uplink (UL) medium access control (MAC) on a uplink shared physical channel (PUSCH) communication.
[15]
15. The system of claim 9, wherein the partial beam pair (BPL) link loss communication is sent to a communication device on a second node in the name of a communication device on a first node, the communication device at the first node experiencing partial beam pair (GLP) link loss.
[16]
16. The system of claim 15, wherein the communication device on the second node notifies the communication device on the first node of partial beam pair (GLP) link loss with the UE.
[17]
17. Method for communication comprising: determining whether any of a plurality of communication control bundles has failed; identify at least one active communication control beam in the plurality of communication control beams; and communicating a partial beam pair link loss (BPL) communication when a partial beam pair link loss (BPL) occurs between a first communication device and a first communication node, the communication of loss of link partial beam pair (BPL) link occurs between the first communication device and a second communication node in the name of the first communication node that experiences the partial beam pair (BPL) link loss with the first communication device.
[18]
18. Method, according to claim 17, which further comprises: upon receipt of the partial beam pair link loss (BPL) communication, program an aperiodic channel state information reference signal communication (CSI- RS) and trigger an aperiodic beam status report; transmit the beam status report with new beam information; and transmit a new GLP addition message based on the beam status report.
[19]
19. Method, according to claim 17, which further comprises: upon receipt of the partial beam pair link loss (GLP) communication, trigger an aperiodic beam situation report on which the measurements are based at least one of a periodic channel status information reference signal communication (CSI-RS) and a periodic synchronization signal communication (SS); transmit the beam status report with new beam information; and transmit a new GLP addition message based on the beam status report.
[20]
20. Method, according to claim 17, which further comprises: upon receipt of partial beam pair link loss (BPL) communication, update a base station configuration and follow a beam failure recovery process .
[21]
21. The method of claim 17, which further comprises sending the partial beam pair (BPL) link loss communication on at least one active communication control beam using a physical control channel communication uplink (PUCCH).
[22]
22. The method of claim 17, which further comprises the communication of partial beam pair (GLP) link loss on at least one active communication control beam using a control element (CE) of uplink (UL) medium access control (MAC) on a uplink shared physical channel (PUSCH) communication.
[23]
23. The method of claim 17, which further comprises the second communication node that notifies the first communication node of partial beam pair (GLP) link loss.
[24]
24. Non-transitory computer-readable media that stores computer-executable code for communication, code that is executable by a processor to:
determining whether any of a plurality of communication control beams has failed; identify at least one active communication control beam in the plurality of communication control beams; and communicating a partial beam pair (BPL) link loss communication on at least one active communication control beam.
[25]
25. Non-transitory computer-readable media, according to claim 24, the code executable by a processor to: upon receipt of the partial beam pair link loss (BPL) communication, program a reference signal communication of aperiodic channel status information (CSI-RS) and trigger an aperiodic beam status report; transmit the beam status report with new beam information; and transmit a new GLP addition message based on the beam status report.
[26]
26. Non-transitory computer-readable media according to claim 24, in which the code is executable by a processor to: upon receipt of the partial beam pair link loss (GLP) communication, trigger a status report of aperiodic beam in which measurements are based on at least one of a channel state information reference signal communication (CSI-RS)
periodic and periodic sync signal communication (SS); transmit the beam status report with new beam information; and transmit a new GLP addition message based on the beam status report.
[27]
27. Non-transitory computer-readable media according to claim 24, in which the code is executable by a processor to: upon receipt of the partial beam pair (BPL) link loss communication, update a station configuration -based and follow a beam failure recovery process.
[28]
28. Non-transitory, computer-readable media according to claim 24, in which the code is executable by a processor to: send the partial beam pair (BPL) link loss communication on at least one control beam from active communication with the use of a physical uplink control channel (PUCCH) communication.
[29]
29. Non-transitory, computer-readable media according to claim 24, in which the code is executable by a processor to: send the partial beam pair (BPL) link loss communication on at least one control beam from active communication with the use of an uplink medium access control (MAC) control element (CE) in an uplink shared physical channel communication (PUSCH).
[30]
30. Non-transitory, computer-readable media according to claim 24, wherein the code is executable by a processor to: send the partial beam pair link loss (BPL) communication to a communication device in one second node in the name of a communication device on a first node, with the communication device on the first node experiencing partial beam pair (BPL) link loss.

类似技术:

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公开号 | 公开日 | 专利标题

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BR112020005025A2|2020-09-15|systems and methods for recovery of loss of communication beam

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同族专利:

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公开号 | 公开日

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US20190090143A1|2019-03-21|

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WO2019055156A1|2019-03-21|

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TW201921969A|2019-06-01|

---

KR20200056385A|2020-05-22|

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CN111095808A|2020-05-01|

---

CA3072751A1|2019-03-21|

---

US10979917B2|2021-04-13|

---

JP2020534739A|2020-11-26|

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EP3682552A1|2020-07-22|

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EP3682552B1|2021-07-07|

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法律状态:
2021-11-23| B350| Update of information on the portal [chapter 15.35 patent gazette]|

优先权:

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申请号 | 申请日 | 专利标题

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US201762559519P| true| 2017-09-16|2017-09-16|

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US62/559,519|2017-09-16|

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US16/056,582|US10979917B2|2017-09-16|2018-08-07|Systems and methods for communication beam loss recovery|

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US16/056,582|2018-08-07|

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PCT/US2018/045689|WO2019055156A1|2017-09-16|2018-08-08|Systems and methods for communication beam loss recovery|

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