Increased reliability during multi-connection switching

Abstract

The present disclosure generally relates to techniques for increasing the reliability of communications within a network during periods of low reliability. The network may include a user equipment (UE) communicatively coupled to one or more transmit / receive points (TRPs), and communications between the UE and the one or more TRPs require a reliability above a first reliability threshold. A processor of a network entity may identify a period of low reliability that occurs when the reliability of the communication is determined to be below a second reliability threshold. The processor may cause the network to perform one or more remedial actions to increase reliability during the period of low reliability.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims the benefit of U.S. Provisional Application Serial No. 62 / 646,771, filed on March 22, 2018, entitled “INCREASING RELIABILITY DURING MULTI-CONNECTIVITY HANDOVERS,” and U.S. Patent Application Serial No. 16 / 356,474, filed on March 18, 2019, entitled “INCREASING RELIABILITY DURING MULTI-CONNECTIVITY HANDOVERS,” the entire contents of which are expressly incorporated herein by reference. Background Art

[0003] Aspects of the present disclosure relate generally to wireless communication networks, and more particularly to increasing reliability during periods of low reliability, such as during multi-connection handover in wireless communication networks (e.g., 5G New Radio systems).

[0004] Wireless communication networks are widely deployed to provide various types of communication content, such as voice, video, packet data, messaging, broadcast, etc. These systems may be multiple-access systems capable of supporting communication with multiple users by sharing available system resources (e.g., time, frequency, and power). Examples of such multiple-access systems include code division multiple access (CDMA) systems, time division multiple access (TDMA) systems, frequency division multiple access (FDMA) systems, orthogonal frequency division multiple access (OFDMA) systems, and single-carrier frequency division multiple access (SC-FDMA) systems.

[0005] These multiple access technologies have been adopted in various telecommunication standards to provide a common protocol that enables different wireless devices to communicate at municipal, national, regional, and even global levels. For example, the fifth generation (5G) wireless communication technology, which may be referred to as New Radio (NR), is envisioned to extend and support different usage scenarios and applications for current mobile network generations. On the one hand, 5G communication technology may include: enhanced mobile broadband, addressing people-centric use cases for accessing multimedia content, services, and data; ultra-reliable low-latency communications (URLLC) with certain latency and reliability specifications; and massive machine-type communications, which may allow for very large numbers of connected devices and the transmission of relatively small amounts of non-delay-sensitive information. However, as the demand for mobile broadband access continues to increase, further improvements may be expected in NR communication technology and beyond.

[0006] For example, for NR communication technology and beyond, current handover solutions may not provide the desired level of reliability during handover. Therefore, it may be desirable to improve wireless communication operations. Summary of the invention

[0007] A simplified summary of one or more aspects is given below to provide a basic understanding of these aspects. This summary is not an extensive overview of all contemplated aspects, and is neither intended to identify key or important elements of all aspects, nor to delineate the scope of any or all aspects. Its sole purpose is to present some concepts of one or more aspects in a simplified form as a prelude to a more detailed description presented later.

[0008] The present application discloses a method, apparatus, and computer-readable medium for increasing reliability during a period of low reliability (e.g., during a multi-connection handover). In one aspect, the present disclosure includes a wireless communication method, the method comprising identifying, by a processor of a network entity, a period of low reliability of communication between a network including one or more transmit / receive points (TRPs) and a user equipment (UE). The communication requires a reliability higher than a first threshold, and a period of low reliability occurs when the reliability of the communication is determined to be lower than a second reliability threshold. The method also includes causing the network to perform one or more remedial actions by the processor to increase reliability during the period of low reliability.

[0009] In another aspect, the present disclosure includes a network entity for increasing reliability during a low reliability period of wireless communication. The network entity may include a memory and a processor communicatively coupled to the memory. The processor may be configured to identify a low reliability period of communication between a network including one or more transmit / receive points (TRPs) and a user equipment (UE). The communication requires a reliability higher than a first threshold, and a low reliability period occurs when the reliability of the communication is determined to be lower than a second reliability threshold. The processor may also be configured to cause the network to perform one or more remedial actions to increase reliability during the low reliability period.

[0010] In yet another aspect, the present disclosure includes a network entity for increasing reliability during a period of low reliability of wireless communication. The network entity may include means for identifying a period of low reliability of communication between a network including one or more transmit / receive points (TRPs) and a user equipment (UE). The communication requires a reliability above a first threshold, and a period of low reliability occurs when the reliability of the communication is determined to be below a second reliability threshold. The network entity may also include means for causing the network to perform one or more remedial actions to increase reliability during the period of low reliability.

[0011] In yet another aspect, the present disclosure includes a non-transitory computer-readable medium storing computer code executable by a processor of a network entity for increasing reliability during a period of low reliability of wireless communication. The computer code, when executed by the processor, causes the processor to identify a period of low reliability of communication between a network including one or more transmit / receive points (TRPs) and a user equipment (UE). The communication requires a reliability above a first threshold, and a period of low reliability occurs when the reliability of the communication is determined to be below a second reliability threshold. The computer code, when executed by the processor, causes the processor to cause the network to perform one or more remedial actions to increase reliability during the period of low reliability.

[0012] In yet another aspect, the present disclosure includes a wireless communication method, the method comprising identifying, by a processor of a user equipment (UE), a period of low reliability of communication between the UE and one or more transmit / receive points (TRPs) in a network. The communication requires a reliability above a first threshold, and the low reliability period occurs when the reliability of the communication is determined to be below a second reliability threshold. The method also includes performing, by the processor, one or more remedial actions to increase reliability during the low reliability period.

[0013] In another aspect, the present disclosure includes a user equipment (UE) for increasing reliability during a low reliability period of wireless communication. The UE may include a memory and a processor communicatively coupled to the memory. The processor may be configured to identify, by the processor, a low reliability period of communication between the UE and one or more transmit / receive points (TRPs) in a network. The communication requires a reliability higher than a first threshold, and when the reliability of the communication is determined to be lower than a second reliability threshold, a low reliability period occurs. The processor may also be configured to perform one or more remedial actions in response to identifying a low reliability period to increase reliability during the low reliability period.

[0014] In yet another aspect, the present disclosure includes a user equipment (UE) for increasing reliability during a period of low reliability of wireless communication. The UE may include a device for identifying a period of low reliability of communication between the UE and one or more transmit / receive points (TRPs) in a network. The communication requires a reliability above a first threshold, and a period of low reliability occurs when the reliability of the communication is determined to be below a second reliability threshold. The user equipment may also include a device for performing one or more remedial actions in response to identifying a period of low reliability to increase reliability during the period of low reliability.

[0015] In yet another aspect, the present disclosure includes a non-transitory computer-readable medium storing computer code executable by a processor of a user equipment (UE) for increasing reliability during a period of low reliability of wireless communication. The computer code, when executed by the processor, identifies a period of low reliability of communication between the UE and one or more transmit / receive points (TRPs) in a network. The communication requires a reliability above a first threshold, and a period of low reliability occurs when the reliability of the communication is determined to be below a second reliability threshold. The computer code, when executed by the processor, causes the processor to perform one or more remedial actions in response to identifying a period of low reliability to increase reliability during the period of low reliability.

[0016] To achieve the foregoing and related ends, one or more aspects include the features fully described below and particularly pointed out in the claims. The following description and the accompanying drawings set forth in detail certain illustrative features of one or more aspects. However, these features are indicative of only some of the various ways in which the principles of the various aspects may be employed, and this description is intended to include all such aspects and their equivalents. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The disclosed aspects will be described below in conjunction with the accompanying drawings, which are provided to illustrate rather than limit the disclosed aspects, wherein like reference numerals represent like elements, and wherein:

[0018] Figure 1 is a schematic diagram of a wireless communication network including at least one of a network entity, a TRP, and a UE, each having a reliability component configured in accordance with the present disclosure to increase reliability during an identified period of low reliability;

[0019] Figure 2A is a schematic diagram of an example of a UE having multiple connections with two TRPs before a handover process;

[0020] Figure 2B is a schematic diagram of an example of a UE having multiple connections with two TRPs during a handover process;

[0021] Figure 2C is a schematic diagram of an example of a UE having multiple connections with two TRPs (one of which is a new TRP) during a handover process;

[0022] Figure 2D is a schematic diagram of an example of a UE having multiple connections with two TRPs after a handover process;

[0023] Figure 3 is a schematic diagram of an example of a UE, two TRPs, and a network entity performing a process of increasing the reliability of communications during a period of low reliability;

[0024] Figure 4is a flow chart of an example of a method for increasing reliability during periods of low reliability;

[0025] Figure 5 is a flow chart of an example of a method of increasing reliability during a period of low reliability by a UE performing one or more remedial actions;

[0026] Figure 6 yes Figure 1 A schematic diagram of example components of a UE;

[0027] Figure 7 yes Figure 1 A schematic diagram of an example assembly of a TRP; and

[0028] Figure 8 yes Figure 1 A schematic diagram of example components of a network entity. DETAILED DESCRIPTION

[0029] Various aspects are now described with reference to the accompanying drawings. In the following description, for the purpose of explanation, many specific details are set forth in order to provide a thorough understanding of one or more aspects. However, it is apparent that these aspects can be practiced without these specific details. In addition, the term "component" used herein can be one of the components that make up a system, which can be hardware, firmware and / or software stored on a computer-readable medium, and can be divided into other components.

[0030] The present disclosure generally relates to techniques for increasing the reliability of communications within a network during periods of low reliability. The network may include a user equipment (UE) communicatively coupled to one or more transmit / receive points (TRPs), wherein communications between the UE and the one or more TRPs (e.g., ultra-reliable low-latency communications (URLLC)) require a reliability higher than a first reliability threshold. A processor of a network entity may identify a period of low reliability that occurs when the reliability of a communication is determined to be lower than a second reliability threshold. The reliability of a communication may be determined to be lower than the second reliability threshold during one or more of the following: replacing a TRP in one or more TRPs, removing a TRP in one or more TRPs, and adding a TRP in one or more TRPs. On the one hand, the first reliability threshold may be the same as the second reliability threshold. On the other hand, the second reliability threshold may be lower than the first reliability threshold and / or be a percentage of the first reliability threshold. The processor may cause the network to perform one or more remedial actions to increase reliability during periods of low reliability.

[0031] The detailed description set forth below in conjunction with the accompanying drawings is intended as a description of various configurations and is not intended to represent the only configuration in which the concepts described herein can be practiced. The detailed description includes specific details in order to provide a thorough understanding of the various concepts. However, it will be apparent to those skilled in the art that these concepts can be practiced without these specific details. In some cases, well-known components are shown in block diagram form to avoid obscuring these concepts.

[0032] Several aspects of telecommunication systems will now be presented with reference to various apparatus and methods. These apparatus and methods will be described in the following detailed description and illustrated in the accompanying drawings by various blocks, modules, components, circuits, steps, processes, algorithms, etc. (collectively referred to as "elements"). These elements may be implemented using electronic hardware, computer software, or any combination thereof. Whether these elements are implemented as hardware or software depends on the specific application and design constraints on the overall system.

[0033] For example, an element or any part of an element, or any combination of elements, can be implemented with a "processing system" including one or more processors. Examples of processors include microprocessors, microcontrollers, digital signal processors (DSPs), field programmable gate arrays (FPGAs), programmable logic devices (PLDs), state machines, gated logic, discrete hardware circuits, and other suitable hardware configured to perform the various functions described throughout this disclosure. One or more processors in a processing system can run software. Software should be broadly understood as instructions, instruction sets, codes, code segments, program codes, programs, subroutines, software modules, applications, software applications, software packages, routines, subroutines, objects, executable programs, threads of operation, processes, functions, etc. Whether it is referred to as software, firmware, middleware, microcode, hardware description language, or other forms.

[0034] Therefore, in one or more aspects, the functions described can be implemented in hardware, software, firmware or any combination thereof. If implemented in software, these functions can be stored on a computer-readable medium or encoded as one or more instructions or codes on a computer-readable medium. Computer-readable media include computer storage media. Storage media can be any available medium that can be accessed by a computer. As an example and not limitation, such a computer-readable medium may include RAM, ROM, EEPROM, CD-ROM or other optical disk storage devices, magnetic disk storage devices or other magnetic storage devices, or any other medium that can be used to carry or store desired program codes in the form of instructions or data structures and can be accessed by a computer. The disk and dish used herein include optical disks (CDs), laser disks, optical disks, digital versatile disks (DVDs) and floppy disks, wherein the disks (disks) usually reproduce data magnetically, and the discs (discs) reproduce data optically with lasers. The above combination should also be included in the scope of computer-readable media.

[0035] It should be noted that the technology described herein can be used for various wireless communication networks, such as CDMA, TDMA, FDMA, OFDMA, SC-FDMA and other systems. The terms "system" and "network" are often used interchangeably. A CDMA system can implement radio technologies such as CDMA2000, Universal Terrestrial Radio Access (UTRA), etc. CDMA2000 covers 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 Speed ​​Packet Data (HRPD), etc. UTRA includes Wideband CDMA (WCDMA) and other variants of CDMA. A TDMA system can implement radio technologies such as Global System for Mobile Communications (GSM). An OFDMA system may implement a radio technology such as Ultra Mobile Broadband (UMB), Evolved UTRA (E-UTRA), IEEE 902.11 (Wi-Fi), IEEE 902.16 (WiMAX), IEEE 902.20, Flash-OFDM TMEtc. UTRA and E-UTRA are part of the Universal Mobile Telecommunications System (UMTS). 3GPP Long Term Evolution (LTE) and Advanced LTE (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 "3rd Generation Partnership Project" (3GPP). CDMA2000 and UMB are described in documents from an organization called the "3rd Generation Partnership Project 2" (3GPP 2). The techniques described herein can be used for the above-mentioned systems and radio technologies as well as other systems and radio technologies, including cellular (e.g., LTE) communications on shared radio spectrum bands. However, the following description describes an LTE / LTE-A system for example purposes, and LTE terminology is used in most of the following description, although the techniques are applicable to LTE / LTE-A applications (e.g., 5G networks or other next generation communication systems).

[0036] The following description provides examples and does not limit the scope, applicability or examples set forth in the claims. The functions and arrangements of the elements discussed may be changed without departing from the scope of the present disclosure. Various examples may appropriately omit, replace or add various processes or components. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted or combined. Furthermore, the features described with respect to some examples may be combined in other examples.

[0037] Various aspects or features will be presented in terms of systems that may include multiple devices, components, modules, etc. It should be understood and appreciated that the various systems may include additional devices, components, modules, etc., and / or may not include all of the devices, components, modules, etc. discussed in conjunction with the figures. Combinations of these methods may also be used.

[0038] Reference below Figure 1-Figure 8 Additional features of this aspect are described in more detail.

[0039] refer to Figure 1According to various aspects of the present disclosure, an example wireless communication network 100 includes at least one UE 104 having a modem, the modem having a UE reliability component 362 for performing one or more remedial actions to increase reliability during a period of low reliability. The wireless communication network 100 includes at least one transmit / receive point (TRP) 102 having a modem, the modem having a TRP reliability component 384 for performing one or more remedial actions to increase reliability during a period of low reliability. In addition, the wireless communication network 100 includes a network entity 160, the network entity 160 is configured to provide communications to and from a core network 170, and the core network 170 provides communications to an IP service 176. Although the network entity 160 is Figure 1 104 and / or one or more TRPs 102 to perform one or more remedial actions to increase reliability during periods of low reliability. Communications within the network 100 (e.g., communications between the UE 104 and one or more TRPs 102) may require a reliability that is higher than a first reliability threshold. For example, communications may be communications with high reliability requirements (e.g., 10 -6 The present disclosure focuses on the reliability requirement, but those skilled in the art will recognize that if the delay experienced by the communication is below the delay threshold, one or more remedial actions discussed herein may also improve the delay problem.

[0040] By using multiple TRP connections, the reliability of communication between the UE 104 and one or more TRPs 102 can be increased. For example, the reliability of communication between the UE 104 and one or more TRPs 102 can be improved by using packet replication, where uplink and / or downlink communications use replication of data packets for communication. On the one hand, the UE 104 can support dual connectivity and be associated with two different TRPs 102 on two different frequency carriers. On the other hand, the UE 104 can support carrier aggregation and more than one component carrier can be associated with one or more TRPs 102. For example, the UE 104 can be associated with the primary component carrier of the TRP 102 and can be associated with one or more secondary component carriers of the TRP 102. In another example, the UE 104 can be associated with a carrier of a first TRP 102 and can be associated with a carrier of a second TRP 102. When one of the TRPs 102 needs to be replaced due to coverage degradation associated with the TRP 102, a switching process can be initiated. During a handover or association change, there is an outage period where the UE 104 is not associated with either the previous TRP 102 or the new TRP 102. A handover or association change is discussed in more detail below with reference to Figure 2. During a handover or association change, the communication between the UE 104 and one or more TRPs 102 may be referred to as a low reliability period.

[0041] One or more UEs 104 and / or one or more TRPs 102 may communicate with other UEs and / or other TRPs 102 via a core network 170 (e.g., a 5G core network or an evolved packet core (EPC)) via a network entity 160. The TRP 102 and the UE 104 may communicate with a network (e.g., an IP service 176) via a core network 170 (e.g., a 5G core network) via the network entity 160. The network entity 160 may include one or more of a gNB, a cell, a central unit, a distributed unit, a remote radio head, a multi-line access point, or an operation and management (OAM) entity. The TRP 102 (which may be collectively referred to as a next generation radio access network (NG-RAN) or an evolved universal mobile telecommunications system (UMTS) terrestrial radio access network (E-UTRAN)) is interfaced with the network entity 160 and / or the core network 170 via a backhaul link 132 (e.g., an S1 interface). The backhaul link 132 may be wired or wireless. The TRP may include one or more of a network entity, a base station, a gNB, an eNB, a cell, a distributed unit (DU), and a central unit (CU) in a radio access network (RAN). Among other functions, the TRP 102 may perform one or more of the following functions: transmission of user data, radio channel encryption and decryption, integrity protection, header compression, mobility control functions (e.g., handover, dual connectivity), inter-cell interference coordination, scheduling of user data, packet replication, connection establishment and release, load balancing, distribution of non-access stratum (NAS) messages, NAS node selection, synchronization, radio access network (RAN) sharing, multimedia broadcast multicast service (MBMS), subscriber and device tracking, RAN information management (RIM), paging, positioning, and delivery of warning messages. The TRPs 102 may communicate with each other directly or indirectly (e.g., through the core network 170) via a backhaul link 134 (e.g., an X2 interface). The backhaul link 134 may be wired or wireless.

[0042] The TRP 102 can communicate wirelessly with the UE 104. Each TRP 102 can provide communication coverage for its own geographic coverage area 110. There may be overlapping geographic coverage areas 110. For example, a small cell 102' can have a coverage area 110' that overlaps with the coverage area 110 of one or more macro TRPs 102. A network including both small cells and macro cells can be referred to as a heterogeneous network. A heterogeneous network can also include a home evolved node (eNB) (HeNB), which can provide services to a restricted group called a closed subscriber group (CSG). The communication link 120 between the TRP 102 and the UE 104 can include an uplink (UL) (also known as a reverse link) transmission from the UE 104 to the TRP 102 and / or a downlink (DL) (also known as a forward link) transmission from the TRP 102 to the UE 104. The communication link 120 can use multiple-input multiple-output (MIMO) antenna technology, including spatial multiplexing, beamforming and / or transmit diversity. The communication link may be through one or more carriers. TRP 102 / UE 104 may use spectrum with up to Y MHz (e.g., 5, 10, 15, 20, 100 MHz) bandwidth per carrier allocated in a carrier aggregation for transmission in each direction with a total of up to Y*x MHz (where x is the number of component carriers). Carriers may be adjacent or non-adjacent to each other. The allocation of carriers may be asymmetric with respect to DL and UL (e.g., more or fewer carriers may be allocated for DL ​​than for UL). Component carriers may include a primary component carrier and one or more secondary component carriers. The primary component carrier may be referred to as a primary cell (PCell) and the secondary component carrier may be referred to as a secondary cell (SCell).

[0043] Certain UEs 104 may communicate with each other using a device-to-device (D2D) communication link 158. The D2D communication link 158 may use DL / UL WWAN spectrum. The D2D communication link 158 may use one or more sidelink channels, such as a physical sidelink broadcast channel (PSBCH), a physical sidelink discovery channel (PSDCH), a physical sidelink shared channel (PSSCH), and a physical sidelink control channel (PSCCH). The D2D communication may be through various wireless D2D communication systems, such as, for example, FlashLinQ, WiMedia, Bluetooth, ZigBee, Wi-Fi based on IEEE 802.11 standards, LTE, or NR.

[0044] The wireless communication system may also include a Wi-Fi access point (AP) 150 that communicates with a Wi-Fi station (STA) 152 in the 5 GHz unlicensed spectrum via a communication link 154. When communicating in the unlicensed spectrum, the STA 152 / AP 150 may perform a clear channel access assessment prior to communication to determine whether the channel is available.

[0045] The small cell 102' can operate in a licensed and / or unlicensed spectrum. When operating in an unlicensed spectrum, the small cell 102' can utilize NR and use the same 5 GHz unlicensed spectrum as the 5 GHz unlicensed spectrum used by the Wi-Fi AP 150. The small cell 102' utilizing NR in the unlicensed spectrum can improve the coverage of the network and / or increase the capacity of the network.

[0046] The TRP 102 (whether a small cell 102' or a large cell (e.g., a macro base station)) may include an eNB, a gNodeB (gNB), or other types of base stations. Some TRPs (such as gNB 180) may communicate with the UE 104 at millimeter wave (mmW) frequencies and / or frequencies close to mmW in the traditional sub-6 GHz (sub 6GHz) spectrum. When the gNB 180 operates at mmW or close to mmW frequencies, the gNB 180 may be referred to as a mmW base station. Extremely high frequency (EHF) is a portion of the RF in the electromagnetic spectrum. The EHF range is 30GHz to 300GHz and has a wavelength between 1 mm and 10 mm. Radio waves in this band may be referred to as millimeter waves. Near millimeter waves may extend down to frequencies of 3GHz with a wavelength of 100 mm. The super high frequency (SHF) band extends between 3GHz and 30GHz and is also referred to as centimeter waves. Communications using the mmW / close to mmW radio frequency bands have extremely high path losses and short distances. The gNB 180 may utilize beamforming 182 with the UE 104 to compensate for the extremely high path loss and short distance.

[0047] The TRP 102 may also be referred to as a gNB, MgNB, SgNB, cell, PCell, SCell, Node B, evolved Node B (eNB), access point, base transceiver station, radio base station, radio transceiver, transceiver function, basic service set (BSS), extended service set (ESS), CU, DU, or some other suitable term. The base station 102 provides an access point to the core network 170 for one or more UEs 104. Examples of UEs 104 include cellular phones, smart phones, session initiation protocol (SIP) phones, laptops, personal digital assistants (PDAs), satellite radios, global positioning systems, multimedia devices, video devices, digital audio players (e.g., MP3 players), cameras, game consoles, tablets, smart devices, wearable devices, vehicles, electric meters, gas pumps, large or small kitchen appliances, healthcare devices, implants, displays, or any other similarly functional device. Some UEs 104 may be referred to as IoT devices (e.g., parking meters, gas pumps, toasters, vehicles, heart monitors, etc.). UE 104 may also be referred to as a station, a mobile station, a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless device, a wireless communication device, a remote device, a mobile subscriber station, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a handset, a user agent, a mobile client, a client, or some other suitable terminology.

[0048] refer to Figure 2A-2D (and Appendix, Slide 2), showing a schematic diagram of an example switch in a multi-connection scenario. Figure 2AAs shown, the core network 202 is wirelessly coupled with TRP1 204 (e.g., primary TRP) and UE 210. TRP1 204 is wirelessly coupled with TRP2 206 (e.g., secondary TRP) and UE 210. TRP1 204 and TRP2 206 can communicate data packets with each other. In one aspect, TRP1 204 can receive one or more data packets from the core network 202, copy the one or more data packets, and send the one or more data packets to TRP2 206, where both TRP1 204 and TRP2 206 send the one or more data packets to UE 210. In another aspect, UE 210 can send one or more data packets to TRP1 204 and TRP2 206. TRP2 206 can send the received one or more data packets to TRP1 204. TRP1 204 can send the received one or more data packets to the core network 202. In one aspect, TRP1 204 may perform a duplication process to eliminate duplicate data packets and may send a set of received one or more data packets to the core network 202. In another aspect, TRP1 204 may send one or more data packets received from UE 210 and one or more data packets received from TRP2 206 to the core network 202.

[0049] like Figure 2B and Figure 2C As shown, a handover from TRP1 to TRP3 is shown. For example, the core network 202 may initiate a handover of the UE 210 from TRP1 204 to TRP3 208 as is known in the art. During the handover of the UE 210 from TRP1 204 to TRP3 208, there may be a low reliability period because the UE 210 may only be communicatively coupled with TRP2 206 during the handover process. The low reliability period may refer to the UE 210 having less than a desired number of communicatively coupled TRPs. For example, during the handover period, the UE 210 may only be communicatively coupled with only one TRP. As a result, during a portion of the handover process, the UE 210 may not receive duplicate data packets. Due to not receiving duplicate data packets, the UE 210 may not receive one or more data packets with the desired expected reliability during a portion of the handover process. Figure 2D UE 210 is shown communicatively coupled with TRP2 206 and TRP3 208 after the handover process is completed.

[0050] Therefore, during low reliability periods, for example, during a handover process, it is desirable to increase reliability during such periods. A low reliability period may be when the UE 210 cannot be associated with a sufficient TRP, for example, when the UE 210 changes association from one TRP to another TRP during a handover process. For example, due to degradation of coverage associated with the TRP, the UE 210 may undergo a handover process of transitioning from TRP1 204 to TRP3 208. During the handover process, the UE 210 may be communicatively coupled only to TRP2 206, rather than TRP1 204 or TRP3 208. As a result, the UE 210 may not receive duplicate data packets and may experience reliability issues in the communication of data packets. Similarly, when using carrier aggregation, when SCells are added or replaced, the process of adding or replacing SCells may affect communications and result in low reliability periods.

[0051] refer to Figure 3 In one aspect, the wireless communication system 300 includes a UE 104 in communication with one or more TRPs 102A, 102B. Figure 3Only two TRPs 102A, 102B are shown to communicate with UE 104, but more than two TRPs (TRPs 102A, 102B) can also communicate with UE 104. UE 104 may include dual radios: a first radio 370 and a second radio 372. Each of the first radio 370 and the second radio 372 can be configured to communicate with one or both of TRPs 102A, 102B, for example, via multiple connections. For example, UE 104 can wirelessly send / receive one or more data packets to / from one or both of TRPs 102A, 102B using dual connections and / or carrier aggregation. For example, for downlink communication, UE 104 can receive one or more data packets from TRP 102A using the first radio 370, and can receive one or more data packets from TRP 102B using the second radio 372. Similarly, for uplink communications, the UE 104 may send one or more data packets to the TRP 102A using the first radio 370, and may send one or more data packets to the TRP 102B using the second radio 372. In another example, the UE 104 may communicate with the TRP 102A on a first subband (e.g., uplink and downlink) using the first radio 370, and may communicate with the TRP 102A on a second subband (e.g., uplink and downlink) using the second radio 372. In one aspect, the communication between the UE 104 and the TRP 102A and the communication between the UE 104 and the TRP 102B may use the same or different radio access technologies. In addition, the TRP 102A and the TRP 102B may be the same type of TRP (e.g., a macro cell, a pico cell, or a femto cell), or may be different types of TRPs.

[0052] UE 104 may include a modem 360 having a UE reliability component 362 configured to increase reliability during periods of low reliability. TRP 102A and TRP 102B may each include a modem 382 having a TRP reliability component 384 configured to increase reliability during periods of low reliability. Network entity 160 may include a modem 322 having a network entity reliability component 324 configured to enable UE 104 and / or one or more of TRPs 102A, 102B to increase reliability of communications between UE 104 and one or more of TRPs 102A, 102B. In one aspect, network entity 160 may not include modem 322 and / or network entity reliability component 324, such that network entity reliability component 324 may be external to modem 322. In another aspect, the network reliability of the communication can be increased by one or more of the UE 104 and / or the TRPs 102A, 102B by performing one or more remedial actions during the low reliability period. For example, the UE reliability component 362 can make measurements based on transmissions from the TRPs 102A, 102B via the first radio device 370, and can provide a measurement report to the TRP reliability component 384 of the TRPs 102A, 102B via the first radio device 370. The TRP reliability component 384 of the TRPs 102A, 102B can forward or send the measurement report to the network entity reliability component 324 of the network entity 160. The network entity reliability component 324 can use the measurement report and one or more additional factors (e.g., the number of other TRPs communicatively coupled to the UE) to determine whether the PER is below a second reliability threshold. In one aspect, the first reliability threshold can be the PER for URLLC communication. In one aspect, the second reliability threshold may be a PER for URLLC communication (e.g., the same as the first reliability threshold), or a percentage of the PER for URLLC communication, e.g., a value that will trigger a handover of TRPs 102A, 102B or an association change of TRPs 102A, 102B. If the measurement report indicates that the PER is below the second reliability threshold, a low reliability period is determined, and the network entity reliability component 324 may cause one or more of the UE 104 and / or TRPs 102A, 102B to perform one or more remedial actions. In one aspect, TRPs 102A, 102B that do not enter the handover process may perform one or more remedial actions. In another aspect, both TRPs 102A and TRPs 102B perform one or more remedial actions.In another aspect, a TRP reliability component 384 of a TRP 102A, 102B may determine whether a handover of the TRP is ongoing and forward a message with the determination to a network entity reliability component 324 of the network entity 160. Based on the message and one or more additional factors (e.g., the number of other TRPs communicatively coupled to the UE), a period of low reliability may be identified, and the network entity reliability component 324 may cause the UE 104 and / or one or more of the TRPs 102A, 102B to perform one or more remedial actions. In another aspect, a determination may be made by a network entity in the radio access network (e.g., a radio resource control associated with one or more of the gNB, CU, DU) whether a handover of the TRP is ongoing, and the network entity may forward a message with the determination. Based on the message and one or more additional factors (e.g., the number of other TRPs communicatively coupled to the UE), a period of low reliability may be identified, and the network entity reliability component 324 may cause the UE 104 and / or one or more of the TRPs 102A, 102B to perform one or more remedial actions.

[0053] In one aspect, UE reliability component 362 can determine a period of low reliability and provide a low reliability period indicator to one or more of TRPs 102A and 102B and / or network entity 160. In another aspect, TRP reliability component 384 can determine a period of low reliability and provide a low reliability indicator to one or more of UE 104 and / or network entity 160.

[0054] During periods of low reliability, one or more techniques may be used to increase the reliability of communications between one or more TRPs 102A, 102B and the UE 104. These techniques may occur at one or more of the TRPs 102A, 102B associated with the UE 104 and / or at the UE 104. In an aspect, one or more TRPs 102A, 102B may increase the transmit power of resources associated with the UE 104. By increasing the transmit power, the reliability of the UE 104 receiving packets increases.

[0055] In another aspect, one or more TRPs 102A, 102B may use one or more of physical downlink control channel (PDCCH) repetitions, increase the aggregation level of the PDCCH, provide more frequent channel state information (CSI) reporting, and use a lower BLER target and a more recent CSI report for MCS determination associated with a hybrid automatic repeat request. Using PDCCH repetitions may include sending the same PDCCH transmission on two or more subbands. If carrier aggregation is being used, the number of aggregation levels may be increased. Increasing CSI reporting may include increasing the frequency of CSI reporting.

[0056] In another aspect, one or more TRPs 102A, 102B may use adaptive channel quality indicator (CQI) filtering. For example, an unfiltered CQI may be used to determine a modulation and coding scheme (MCS) for a communication, which may allow the TRPs 102A, 102B (e.g., base stations) to adapt to instantaneous channel conditions more quickly and efficiently.

[0057] In another aspect, one or more TRPs 102A, 102B may bias the CSI used to determine the MCS for the UE 104 to increase reliability of communications. The offset may be used in the CQI to bias the CQI such that the offset CQI causes the MCS to be selected for channel conditions that are worse than actual channel conditions. For example, one or more TRPs 102A, 102B may use a temporary CQI offset to change or bias the CQI value reported by the UE 104. The CQI offset may be simple, such as a fixed delta, or more advanced, such as based on machine learning (ML) techniques for identifying good offset values.

[0058] On the other hand, one or more TRPs 102A, 102B can allocate more grants for retransmissions to UE 104. The additional grants can be for uplink retransmissions and / or downlink retransmissions. For example, one or more TRPs 102A, 102B can increase the number of grants in semi-persistent scheduling (SPS) (e.g., by increasing the frequency or repetition) to allow more retransmissions.

[0059] In another aspect, the network entity reliability component 324 can request one or more TRPs 102A, 102B to add one or more additional component carriers with packet duplication. For example, one or more TRPs 102A, 102B can increase the number of component carriers dedicated to the UE 104.

[0060] On the other hand, one or more TRPs 102A, 102B may use a portion of the resources (e.g., resource blocks (RBs) or time slots) of each frequency (f1 and f2) that are reserved for transmissions during low reliability periods. For example, one or more TRPs 102A, 102B may reserve resources, e.g., that are not used during non-low reliability periods, and may use these reserved resources during low reliability periods. Assuming that only a small number of UEs 104 in the network will be in low reliability periods, which causes fewer transmissions and less interference to occur in the reserved resources, the interference experienced in these resources should be less than the interference experienced on other resources.

[0061] During the low reliability period, one or more TRPs 102A, 102B may instruct the UE 104 to perform one or more techniques to increase the reliability of the one or more TRPs 102A, 102B receiving one or more communications from the UE 104. The instructions may be sent via a radio resource control (RRC) message, a medium access control (MAC) message control element, or the like.

[0062] In one aspect, the UE 104 may increase the transmit power of one or more of the first transmission and subsequent transmissions to the one or more TRPs 102A, 102B. In another aspect, the UE 104 may use a lower MCS than required by the PER target. For example, the UE 104 may use a lower MCS to reduce the number of bits sent to the one or more TRPs 102A, 102B. In another aspect, the UE 104 may modify the CQI report to the one or more TRPs 102A, 102B. For example, the UE 104 may report a lower CQI value to the one or more TRPs 102A, 102B, which may cause one or more base stations to adapt to the lower CQI value. In another aspect, the UE 104 may request the one or more TRPs 102A, 102B to implement one or more of the above techniques to increase the reliability of the transmission to the UE 104.

[0063] The techniques discussed above, e.g., techniques performed by the network or TRP and / or techniques performed by the UE, may be used only for the transmission of bearers associated with URLLC requirements (and not for other bearers). The UE 104 or one or more TRPs 102A, 102B may notify each other of the start and end of the low reliability period via one or more messages, and these messages may be forwarded to the network entity reliability component 324.

[0064] refer to Figure 4 , a flow chart illustrating an example method 400 of operating a network entity to increase reliability during a period of low reliability according to the above aspects includes one or more actions defined herein.

[0065] At block 410, method 400 may include identifying, by a processor of a network entity, a period of low reliability of communication between a network including one or more TRPs and a UE, wherein the communication requires a reliability above a first reliability threshold, and the period of low reliability occurs when the reliability of the communication is determined to be below a second reliability threshold. In one aspect, for example, processor 812 in conjunction with network entity reliability component 324 may identify a period of low reliability of communication between network 100 including one or more TRPs 102A, 102B and UE 104. In one aspect, processor 812 in conjunction with network entity reliability component 324 may identify the period of low reliability based on measurement reports from UE 104 via one or more TRPs 102A, 102B. In another aspect, processor 712 in conjunction with TRP reliability component 384 may identify the period of low reliability based on measurement reports from UE 104. In another aspect, processor 612 in conjunction with UE reliability component 362 may identify the period of low reliability based on measurement reports generated by UE 104 or based on measurements (e.g., PER values) generated by UE 104. In another aspect, the UE reliability component 362 and / or the TRP reliability component 384 can identify a low reliability period and send a low reliability period indicator to the network entity reliability component 324. A low reliability period can be determined when it is determined that the reliability of communication between the UE 104 and one or more TRPs 102A, 102B is below a second reliability threshold. For example, a low reliability period can be determined when the PER is below a second reliability threshold. The second reliability threshold can be the same as the first reliability threshold (e.g., a reliability threshold required for communication between the UE 104 and one or more TRPs 102A, 102B), or can be a percentage of the first threshold, for example, 0.99% of the first reliability threshold.

[0066] At block 420, method 400 may include causing, by the processor, the network to perform one or more remedial actions to increase reliability during the low reliability period. In one aspect, for example, processor 812, in conjunction with network entity reliability component 324, causes one or more remedial actions to be performed to increase reliability during the low reliability period.

[0067] At block 422, method 400 may optionally include causing at least one of the one or more TRPs to increase power of one or more of downlink resources associated with the UE and uplink resources associated with the UE. In one aspect, for example, processor 812, in conjunction with network entity reliability component 324, may cause one or more of TRPs 102A, 102B to increase power of one or more of downlink resources associated with UE 104 and uplink resources associated with UE 104. For example, processor 812, in conjunction with network entity reliability component 324, instructs one or more TRPs 102A, 102B to increase power on downlink resources associated with UE 104, and / or instructs one or more TRPs 102A, 102B to instruct UE 104 to increase power on uplink resources associated with UE 104.

[0068] At block 424, the method 400 may optionally include causing at least one of the one or more TRPs to perform one or more of: using PDCCH repetition for the UE, increasing the aggregation level of the PDCCH for the UE, increasing CSI reporting for the UE, and using turbo HARQ for the UE. In one aspect, for example, the processor 812, in conjunction with the network entity reliability component 324, may cause one or more of the TRPs 102A, 102B to use PDCCH repetition for the UE 104, increase the aggregation level of the PDCCH for the UE 104, increase CSI reporting for the UE 104, and use turbo HARQ for the UE 104. For example, the processor 812, in conjunction with the network entity reliability component 324, instructs one or more of the TRPs 102A, 102B to use PDCCH repetition for the UE 104, increase the aggregation level of the PDCCH for the UE 104, increase CSI reporting for the UE 104, and use turbo HARQ for the UE 104.

[0069] At block 426, method 400 may optionally include causing at least one of the one or more TRPs to use a lower PER target for the UE and to use a lower MCS required for a PER lower than the PER target. In one aspect, for example, processor 812, in conjunction with network entity reliability component 324, may cause one or more of TRPs 102A, 102B to use a lower PER target for UE 104 and to use a lower MCS required for a PER lower than the PER target. For example, processor 812, in conjunction with network entity reliability component 324, instructs one or more of TRPs 102A, 102B to use a lower PER target for UE 104 and to use a lower MCS required for a PER lower than the PER target.

[0070] At block 428, method 400 may optionally include causing at least one of the one or more TRPs to use MCS for the UE based on the unfiltered CSI. In one aspect, for example, processor 812 in conjunction with network entity reliability component 324 may cause one or more of TRPs 102A, 102B to use MCS for UE 104 based on the unfiltered CSI. For example, processor 812 in conjunction with network entity reliability component 324 instructs one or more of TRPs 102A, 102B to use MCS for UE 104 based on the unfiltered CSI.

[0071] At block 430, method 400 may optionally include causing at least one of the one or more TRPs to offset the CSI used to determine the MCS for the UE to increase reliability of communications. In one aspect, for example, processor 812, in conjunction with network entity reliability component 324, may cause one or more of TRPs 102A, 102B to offset the CSI used to determine the MCS for the UE 104 to increase reliability of communications. For example, processor 812, in conjunction with network entity reliability component 324, instructs one or more of TRPs 102A, 102B to offset the CSI used to determine the MCS for the UE 104 to increase reliability of communications.

[0072] At block 432, method 400 may optionally include causing at least one of the one or more TRPs to increase a number of grants for retransmissions associated with the UE. In one aspect, for example, processor 812, in conjunction with network entity reliability component 324, may cause one or more of TRPs 102A, 102B to increase a number of grants for retransmissions associated with UE 104. For example, processor 812, in conjunction with network entity reliability component 324, instructs one or more of TRPs 102A, 102B to increase a number of grants for retransmissions associated with UE 104. The grants may be for downlink retransmissions and / or uplink retransmissions.

[0073] At block 434, method 400 may optionally include causing the network to add additional component carriers for carrier aggregation in the UE and to send replicated information on the additional component carriers using packet replication. In one aspect, for example, processor 812 in conjunction with network entity reliability component 324 may cause one or more of TRPs 102A, 102B to add additional component carriers for carrier aggregation in UE 104 and to send replicated information on the additional component carriers using packet replication. For example, processor 812 in conjunction with network entity reliability component 324 instructs one or more of TRPs 102A, 102B to add additional component carriers for carrier aggregation in UE 104 and to send replicated information on the additional component carriers using packet replication.

[0074] At block 436, the method 400 may optionally include causing at least one of the one or more TRPs to use the reserved resources for one or more of transmissions to and receptions from the UE 104. In an aspect, for example, the processor 812, in conjunction with the network entity reliability component 324, may cause one or more of the TRPs 102A, 102B to use the reserved resources for one or more of transmissions to and receptions from the UE 104. For example, the processor 812, in conjunction with the network entity reliability component 324, directs one or more of the TRPs 102A, 102B to use the reserved resources for one or more of transmissions to and receptions from the UE 104. The reserved resources may be reserved during non-low reliability periods and may be used only during low reliability periods.

[0075] At block 438, method 400 may optionally include causing at least one of the one or more TRPs to instruct the UE to perform one or more remedial actions. In one aspect, for example, processor 812 in conjunction with network entity reliability component 324 may cause one or more of TRPs 102A, 102B to instruct UE reliability component 362 to cause UE 104 to perform one or more remedial actions. For example, processor 812 in conjunction with network entity reliability component 324 may instruct one or more of TRPs 102A, 102B to instruct UE reliability component 362 to cause UE 104 to perform one or more remedial actions. Figure 5 One or more remedial actions that may be performed by the UE 104 are described.

[0076] refer to Figure 5 , a flowchart illustrating an example method 500 of operating a UE to increase reliability during a period of low reliability according to the above aspects includes one or more actions defined herein.

[0077] At block 510, method 500 may include identifying, by a processor of the UE, a period of low reliability of communication between the UE and one or more TRPs in the network, wherein the communication requires a reliability above a first reliability threshold, and the period of low reliability occurs when the reliability of the communication is determined to be below a second reliability threshold. In one aspect, for example, processor 612 in conjunction with UE reliability component 362 may identify a period of low reliability for communication between UE 104 and one or more TRPs 102A, 102B in network 100. In one aspect, identifying may include UE 104 determining the period of low reliability based on one or more values ​​in a measurement report or one or more values ​​generated by UE 104 for the measurement report. In another aspect, identifying may include UE 104 receiving a low reliability period indicator from one or more of TRPs 102A, 102B and / or from network entity 160. In another aspect, identifying may include UE 104 receiving an instruction to perform one or more remedial actions.

[0078] At block 520, method 400 may include performing, by the UE, one or more remedial actions in response to identifying the low reliability period. In one aspect, for example, the processor in conjunction with UE reliability component 362 may perform one or more remedial actions in response to identifying the low reliability period.

[0079] At block 522, the method 500 may optionally include causing the UE to increase power to one or more of a first transmission and subsequent retransmissions of the one or more TRPs. In one aspect, for example, the processor 612 in conjunction with the UE reliability component 362 may increase power to one or more of a first transmission and subsequent retransmissions of the one or more TRPs 102A, 102B.

[0080] At block 524, method 500 may optionally include modifying CQI reporting by reporting a lower CQI value to cause more conservative link adaptation. In one aspect, for example, processor 612 in conjunction with UE reliability component 362 may modify CQI reporting by reporting one or more lower CQI values ​​to one or more TRPs 102A, 102B to cause more conservative link adaptation. The lower CQI value is lower than the CQI value determined or calculated by UE 104.

[0081] At block 526, method 500 may optionally include requesting the network to perform one or more network remediation actions. In one aspect, for example, processor 612 in conjunction with UE reliability component 362 requests the network to perform one or more network remediation actions, for example, Figure 4 One or more of blocks 422-436.

[0082] In addition, Figure 4 and Figure 5In the block of the method 400 and / or 500, one or more of the UE 104, TRP 102A, and TRP 102B may indicate the beginning of a low reliability period and indicate the end of a low reliability period. In one aspect, for example, the processor 612 in combination with the UE reliability component 362 may send an indication to one or more TRPs 102A, 102B that the communication between the UE 104 and the one or more TRPs 102A, 102B has entered or begun to experience a low reliability period and / or the low reliability period has ended. In one aspect, for example, the processor 612 in combination with the TRP reliability component 384 may send an indication to the network entity reliability component 324 that the communication between the UE 104 and the one or more TRPs 102A, 102B has entered or begun to experience a low reliability period and / or the low reliability period has ended.

[0083] refer to Figure 6 , an example of an implementation of the UE 104 may include various components, some of which have been described above, but also include components such as one or more processors 612 and memory 616 and transceiver 602 communicating via one or more buses 644, which may operate in conjunction with the modem 360 and UE reliability component 362 to implement one or more functions described herein related to increasing reliability during periods of low reliability. In addition, the one or more processors 612, modem 360, memory 616, transceiver 602, RF front end 688, and one or more antennas 665 may be configured to support voice and / or data calls (simultaneously or non-simultaneously) in one or more radio access technologies.

[0084] In one aspect, the one or more processors 612 may include a modem 360 using one or more modem processors. Various functions associated with the UE reliability component 362 may be included in the modem 360 and / or the processor 612, and in one aspect, may be run by a single processor, while in other aspects, different functions may be run by a combination of two or more different processors. For example, in one aspect, the one or more processors 612 may include any one or any combination of a modem processor, or a baseband processor, or a digital signal processor, or a transmitter processor, or a receiver processor, or a transceiver processor associated with the transceiver 602. In other aspects, some features of the one or more processors 612 and / or the modem 360 associated with the UE reliability component 362 may be performed by the transceiver 602.

[0085] And, the memory 616 can be configured to store data used herein and / or a local version of the UE reliability component 362 and / or one or more subcomponents thereof or the application 675 executed by at least one processor 612. The memory 616 may include any type of computer-readable medium usable by a computer or at least one processor 612, such as a random access memory (RAM), a read-only memory (ROM), a tape, a disk, an optical disk, a volatile memory, a non-volatile memory, and any combination thereof. In one aspect, for example, the memory 616 may be a non-transitory computer-readable storage medium that stores one or more computer executable codes and / or data associated therewith that define the UE reliability component 362 and / or one or more subcomponents thereof when the UE 104 operates at least one processor 612 to execute the UE reliability component 362 and / or one or more subcomponents thereof.

[0086] The transceiver 602 may include at least one receiver 606 and at least one transmitter 608. The receiver 606 may include hardware, firmware, and / or software code that can be executed by a processor for receiving data, the code including instructions and stored in a memory (e.g., a computer-readable medium). The receiver 606 may be, for example, a radio frequency (RF) receiver. In one aspect, the receiver 606 may receive a signal transmitted by at least one base station 402. In addition, the receiver 606 may process such received signals and may also obtain measurement values ​​of the signal, such as but not limited to Ec / Io, SNR, RSRP, RSSI, etc. The transmitter 608 may include hardware, firmware, and / or software code that can be executed by a processor for transmitting data, the code including instructions and stored in a memory (e.g., a computer-readable medium). Suitable examples of the transmitter 608 may include, but are not limited to, an RF transmitter.

[0087] In addition, in an aspect, the UE 104 can include an RF front end 688, which can communicate with one or more antennas 665 and the transceiver 602 for receiving and sending radio transmissions, such as wireless communications sent by at least one TRP 102A, 102B or wireless transmissions sent by the UE 104. The RF front end 688 can be connected to the one or more antennas 665 and can include one or more low noise amplifiers (LNAs) 690, one or more switches 692, one or more power amplifiers (PAs) 698, and one or more filters 696 to transmit and receive RF signals.

[0088] In one aspect, the LNA 690 can amplify the received signal at a desired output level. In one aspect, each LNA 690 can have a specified minimum and maximum gain value. In one aspect, the RF front end 688 can use one or more switches 692 to select a particular LNA 690 and its specified gain value based on the desired gain value for a particular application.

[0089] In addition, for example, one or more PAs 698 can be used by the RF front end 688 to amplify the signal of the RF output at a desired output power level. In one aspect, each PA 698 can have a specified minimum and maximum gain value. In one aspect, the RF front end 688 can use one or more switches 692 to select a particular PA 698 and its specified gain value based on the desired gain value for a particular application.

[0090] And, for example, one or more filters 696 can be used by the RF front end 688 to filter the received signal to obtain an input RF signal. Similarly, in one aspect, for example, a corresponding filter 696 can be used to filter the output from the corresponding PA 698 to produce an output signal for transmission. In one aspect, each filter 696 can be connected to a specific LNA 690 and / or PA 698. In one aspect, the RF front end 688 can use one or more switches 692 to select a transmit or receive path using a specified filter 696, LNA 690, and / or PA 698 based on a configuration specified by the transceiver 1202 and / or the processor 612.

[0091] As such, the transceiver 602 can be configured to transmit and receive wireless signals via the RF front end 688 through one or more antennas 665. In one aspect, the transceiver can be tuned to operate at a specified frequency so that the UE 104 can communicate with, for example, one or more base stations 402 or one or more cells associated with the one or more base stations 402. In one aspect, the modem 360 can configure the transceiver 602 to operate at a specified frequency and power level based on, for example, the UE configuration of the UE 104 and the communication protocol used by the modem 360.

[0092] In one aspect, the modem 360 can be a multi-band multi-mode modem that can process digital data and communicate with the transceiver 602 so that the digital data is sent and received using the transceiver 602. In one aspect, the modem 360 can be multi-band and configured to support multiple frequency bands of a specified communication protocol. In one aspect, the modem 360 can be multi-mode and configured to support multiple operating networks and communication protocols. In one aspect, the modem 360 can control one or more components (e.g., RF front end 688, transceiver 602) of the UE 104 to enable sending and / or receiving signals from the network based on a prescribed modem configuration. In one aspect, the modem configuration can be based on the mode of the modem and the frequency band used. In another aspect, the modem configuration can be based on the UE configuration information associated with the UE 104 provided by the network during cell selection and / or cell reselection.

[0093] refer to Figure 7 , an example of an implementation of the TRP 102 may include various components, some of which have been described above, but also include components such as one or more processors 712 and memory 716 and a transceiver 702 that communicate via one or more buses 744, which can operate in conjunction with the modem 382 and the TRP reliability component 384 to implement one or more functions described herein related to increasing reliability during low reliability periods.

[0094] The transceiver 702, receiver 706, transmitter 708, one or more processors 712, memory 716, application 775, bus 744, RF front end 788, LNA 790, switch 792, filter 796, PA 798 and one or more antennas 765 can be the same or similar to the corresponding components of UE 104 as described above, but are configured or otherwise programmed for TRP operation as opposed to UE operation.

[0095] refer to Figure 8, one example of an implementation of the network entity 160 may include various components, some of which have been described above, but also include components such as one or more processors 812 and memory 816 and transceiver 802 that communicate via one or more buses 844, which may operate in conjunction with the modem 322 and the network entity reliability component 324 to implement one or more functions described herein related to increasing reliability during periods of low reliability. In one aspect, the network entity 160 may not include the modem 322, and / or the network entity reliability component may be external to the modem 322. In another example, the network entity 160 may include a wired communication interface 850, which may operate in conjunction with the modem 322 and the network entity reliability component 324 to implement one or more functions described herein related to increasing reliability during periods of low reliability. The transceiver 802, receiver 806, transmitter 808, one or more processors 813, memory 816, application 875, bus 844, RF front end 888, LAN 890, switch 892, filter 896, PA 898 and one or more antennas 865 can be the same as or similar to the corresponding components of UE 104 as described above, but are configured or otherwise programmed for network entity operations as opposed to UE operations.

[0096] The detailed description set forth above in conjunction with the accompanying drawings describes examples and does not represent the only examples that may be implemented or within the scope of the claims. When used in this specification, the term "example" means "used as an example, instance, or illustration," rather than "preferred" or "superior to other examples." The detailed description includes specific details for the purpose of providing an understanding of the described techniques. However, these techniques may be practiced without these specific details. In some instances, well-known structures and devices are shown in block diagram form to avoid obscuring the concepts of the examples.

[0097] Information and signals may be represented using a variety of different technologies and techniques. For example, data, instructions, commands, information, signals, bits, symbols, and chips referenced throughout the above description may be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, computer executable codes or instructions stored on computer-readable media, or any combination thereof.

[0098] The various illustrative blocks and components described in conjunction with the disclosure herein may be implemented or executed with a specially programmed device, such as, but not limited to, a processor, a digital signal processor (DSP), an ASIC, an FPGA or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. The specially programmed processor may be a microprocessor, but alternatively, the processor may be any conventional processor, controller, microcontroller, or state machine. The specially programmed processor may also be implemented as a combination of computing devices, for example, a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in combination with a DSP core, or any other such configuration.

[0099] The functions described herein can be implemented in hardware, software run by a processor, firmware, or any combination thereof. If implemented in software run by a processor, the function can be stored as one or more instructions or codes on a non-transitory computer-readable medium or sent by it. Other examples and embodiments are within the scope and spirit of the present disclosure and the appended claims. For example, due to the nature of software, the above functions can be implemented using software, hardware, firmware, hard wiring, or any combination of these run by a specially programmed processor. The features of the implementation functions can also be physically located in different locations, including being distributed so that some functions are implemented at different physical locations. And, as used herein, including in the claims, the "or" used in the list of items starting with "at least one" represents a disjunctive list, for example, the list of "at least one of A, B, or C" represents A, or B, or C, or AB, or AC, or BC, or ABC (i.e. A and B and C). Combinations such as “at least one of A, B, or C,” “one or more of A, B, or C,” “at least one of A, B and C,” “one or more of A, B, and C,” and “A, B, C, or any combination thereof” include any combination of A, B, and / or C, and may include multiples of A, multiples of B, or multiples of C. Specifically, combinations such as “at least one of A, B, or C,” “one or more of A, B, or C,” “at least one of A, B, and C,” “one or more of A, B, and C,” and “A, B, C, or any combination thereof” may be only A, only B, only C, A and B, A and C, B and C, or A, B, and C, wherein any such combination may include one or more members of A, B, or C.

[0100] Computer-readable media include both computer storage media and communication media, and communication media include any media that is convenient for transmitting a computer program from one place to another. Storage media can be any available media that a general or special computer can access. As an example and not limitation, computer-readable media may include RAM, ROM, EEPROM, CD-ROM or other optical disk storage devices, disk storage devices or other magnetic storage devices, or may be used to carry or store desired program code means in the form of instructions or data structures and any other medium that can be accessed by a general or special computer or a general or special processor. And, any connection is properly referred to as computer-readable media. For example, if software is sent from a website, server or other remote source using coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL) or wireless technology (such as infrared, radio and microwave), coaxial cable, fiber optic cable, twisted pair, DSL or wireless technology (such as infrared, radio and microwave) are included in the definition of medium. The disk and dish used here include compact disk (CD), laser disk, compact disk, digital versatile disk (DVD), floppy disk and blue disc, wherein the disk usually reproduces data magnetically, and the dish reproduces data optically with laser. Combinations of the above are also included within the scope of computer-readable media.

[0101] The previous description of the present disclosure is provided to enable those skilled in the art to make or use the present disclosure. Various modifications to the present disclosure will be apparent to those skilled in the art, and the common principles defined herein may be applied to other variations without departing from the spirit or scope of the present disclosure. In addition, although the elements of the described aspects and / or embodiments may be described or claimed in the singular, the plural form is also contemplated unless explicitly stated to be limited to the singular. In addition, all or a portion of any aspect and / or embodiment may be used together with all or a portion of any other aspect and / or embodiment, unless otherwise stated. Therefore, the present disclosure is not limited to the examples and designs described herein, but conforms to the widest scope consistent with the principles and novel features disclosed herein.

[0102] Some further example embodiments

[0103] An example method for wireless communication includes: identifying, by a processor of a network entity, a period of low reliability of communication between a network including one or more transmit / receive points (TRPs) and a user equipment (UE), wherein the communication requires a reliability above a first reliability threshold, and the low reliability period occurs when the reliability of the communication is determined to be below a second reliability threshold; and causing, by the processor, the network to perform one or more remedial actions to increase reliability during the low reliability period.

[0104] The example method described above, wherein the reliability of the communication is determined to be below a second reliability threshold during one or more of the following: replacing a TRP in one or more TRPs, removing a TRP in one or more TRPs, or adding a TRP in one or more TRPs.

[0105] One or more of the above-mentioned example methods, wherein the one or more remedial actions also include causing at least one of the one or more TRPs to increase the transmit power of one or more of the downlink resources associated with the UE and the uplink resources associated with the UE.

[0106] One or more of the above-mentioned example methods, wherein the one or more remedial actions also include causing at least one of the one or more TRPs to perform one or more of the following: using physical downlink control channel (PDCCH) repetition for the UE, increasing the aggregation level of the PDCCH for the UE, increasing the frequency of channel state information (CSI) reporting for the UE, or using turbo HARQ for the UE.

[0107] One or more of the above-mentioned example methods, wherein the one or more remedial actions also include causing at least one of the one or more TRPs to use a lower packet error rate (PER) target for the UE, or to use a lower modulation and coding scheme (MCS) required for a packet error rate (PER) lower than the PER target.

[0108] One or more of the above-mentioned example methods, wherein the one or more remedial actions also include causing at least one of the one or more TRPs to use a modulation and coding scheme (MCS) for the UE based on unfiltered channel state information (CSI).

[0109] One or more of the above-mentioned example methods, wherein the one or more remedial actions also include causing at least one of the one or more TRPs to offset the channel state information (CSI) used to determine the MCS for the UE to increase the reliability of communication.

[0110] One or more of the above example methods, wherein the one or more remedial actions further include causing at least one of the one or more TRPs to increase the number of grants for retransmission associated with the UE. The one or more remedial actions further include causing the network to add an additional component carrier for carrier aggregation in the UE, and sending the replicated information on the additional component carrier using packet duplication.

[0111] One or more of the above-mentioned example methods, wherein the one or more remedial actions also include causing at least one of the one or more TRPs to use reserved resources for one or more of transmission to and reception from the UE.

[0112] One or more of the above-mentioned example methods, wherein the one or more remedial actions also include causing at least one of the one or more TRPs to request the UE to perform one or more remedial actions.

[0113] One or more of the above example methods, wherein, in response to a request to perform one or more remedial actions on the UE, a transmit power of one or more of the uplink resources associated with the UE is increased.

[0114] One or more of the above example methods, wherein, in response to a request to perform one or more remedial actions on the UE, a channel quality indicator (CQI) report is modified by reducing one or more CQI values ​​in the CQI report.

[0115] One or more of the above example methods, wherein, in response to the request to perform one or more remedial actions on the UE, the network is requested to perform one or more network-based remedial actions.

[0116] An example device (e.g., a network entity) includes: a transceiver, a memory configured to store instructions, and one or more processors communicatively coupled to the transceiver and the memory, wherein the one or more processors are configured to perform all or part of one or more of the above-described example methods.

[0117] An example apparatus (eg, a network entity) includes means for wireless communication, means for storing instructions and data, and means for performing all or part of one or more of the above-described example methods.

[0118] A second example method of wireless communication includes: identifying, by a processor of a user equipment (UE), a period of low reliability of communication between the UE and one or more transmit / receive points (TRPs) in a network, wherein the communication requires a reliability higher than a first reliability threshold, and the period of low reliability occurs when the reliability of the communication is determined to be lower than a second reliability threshold; and performing, by the processor, one or more remedial actions in response to identifying the period of low reliability.

[0119] The example method described above, wherein the reliability of the communication is determined to be below a second reliability threshold during one or more of the following: replacing a TRP in one or more TRPs, removing a TRP in one or more TRPs, or adding a TRP in one or more TRPs.

[0120] One or more of the above-described example methods, wherein the one or more remedial actions include increasing the uplink transmit power of one or more of a first transmission and subsequent retransmissions to the one or more TRPs.

[0121] One or more of the above example methods, wherein the one or more remedial actions include modifying a channel quality indicator (CQI) report by reporting a lower CQI value to induce more conservative link adaptation.

[0122] One or more of the above example methods, wherein the one or more remedial actions include requesting the network to perform one or more network remedial actions.

[0123] An example device (e.g., a user device) includes: a transceiver, a memory configured to store instructions, and one or more processors communicatively coupled to the transceiver and the memory, wherein the one or more processors are configured to perform all or part of one or more of the above-described example methods.

[0124] An example apparatus (eg, user equipment) includes means for wireless communication, means for storing instructions and data, and means for performing all or part of one or more of the above-described example methods.

Claims

1. A method for wireless communication, comprising: identifying, by a processor of the network entity, a period of low reliability of communication between a network including one or more transmission / reception points TRP and a user equipment UE, wherein the communication requires a reliability above a first reliability threshold, and the period of low reliability occurs when the reliability of the communication is determined to be below a second reliability threshold; as well as causing the network to perform one or more remedial actions to increase reliability during the low reliability period by causing at least one of the one or more TRPs to request the UE to perform one or more remedial actions so that the UE performs a modified CQI report by reducing one or more CQI values ​​in the CQI report, The one or more CQI values ​​that are reduced are lower than the CQI value determined by the UE, and the second reliability threshold is lower than the first reliability threshold.

2. The method according to claim 1, wherein: The reliability of the communication is determined to be below the second reliability threshold during one or more of: replacing a TRP in the one or more TRPs, removing a TRP in the one or more TRPs, or adding a TRP in the one or more TRPs.

3. The method according to claim 1, wherein: The one or more remedial actions also include causing at least one of the one or more TRPs to increase the transmit power of one or more of the downlink resources associated with the UE and the uplink resources associated with the UE.

4. The method according to claim 1, wherein: The one or more remedial actions also include causing at least one of the one or more TRPs to perform one or more of the following: using physical downlink control channel PDCCH repetition for the UE, increasing the aggregation level of PDCCH for the UE, increasing the frequency of channel state information CSI reporting for the UE, or using turbo HARQ for the UE.

5. The method according to claim 1, wherein: The one or more remedial actions also include causing at least one of the one or more TRPs to use a lower packet error rate PER target for the UE, or to use a lower modulation and coding scheme MCS required for a packet error rate PER lower than the PER target.

6. The method according to claim 1, wherein: The one or more remedial actions also include causing at least one of the one or more TRPs to use a modulation and coding scheme MCS for the UE based on unfiltered channel state information CSI.

7. The method according to claim 1, wherein: The one or more remedial actions also include causing at least one of the one or more TRPs to offset the channel state information CSI used to determine the MCS for the UE to increase the reliability of the communication.

8. The method according to claim 1, wherein: The one or more remedial actions also include causing at least one of the one or more TRPs to increase a number of grants for retransmission associated with the UE.

9. The method according to claim 1, wherein: The one or more remedial actions also include causing the network to add an additional component carrier for carrier aggregation in the UE and to send replicated information on the additional component carrier using packet duplication.

10. The method according to claim 1, wherein: The one or more remedial actions also include causing at least one of the one or more TRPs to use reserved resources for one or more of transmission to and reception from the UE.

11. The method according to claim 1, wherein: In response to the request to perform the one or more remedial actions on the UE, a transmit power of one or more of the uplink resources associated with the UE is increased.

12. The method according to claim 1, wherein: In response to the request, the network is requested to perform one or more network-based remedial actions.

13. A network entity for wireless communication, comprising: Memory; as well as a processor communicatively coupled to the memory and configured to: identifying a period of low reliability of communication between a network including one or more transmission / reception points TRP and a user equipment UE, wherein the communication requires a reliability above a first reliability threshold and the period of low reliability occurs when the reliability of the communication is determined to be below a second reliability threshold; as well as causing the network to perform one or more remedial actions to increase reliability during the low reliability period by causing at least one of the one or more TRPs to request the UE to perform one or more remedial actions so that the UE performs a modified CQI report by reducing one or more CQI values ​​in the CQI report, The one or more CQI values ​​that are reduced are lower than the CQI value determined by the UE, and the second reliability threshold is lower than the first reliability threshold.

14. The network entity according to claim 13, wherein: The reliability of the communication is determined to be below a second reliability threshold during one or more of: replacing a TRP in the one or more TRPs, removing a TRP in the one or more TRPs, or adding a TRP in the one or more TRPs.

15. A method for wireless communication, comprising: Identifying, by a processor of a user equipment UE, a period of low reliability of communication between one or more transmission / reception points TRP in a network and the UE, wherein the communication requires a reliability above a first reliability threshold, and the period of low reliability occurs when the reliability of the communication is determined to be below a second reliability threshold; as well as In response to identifying the low reliability period, performing, by the processor, one or more remedial actions by modifying a channel quality indicator (CQI) report to cause more conservative link adaptation by reporting a lower CQI value, The lower CQI value is lower than the CQI value determined by the UE, and the second reliability threshold is lower than the first reliability threshold.

16. The method according to claim 15, wherein: The reliability of the communication is determined to be below the second reliability threshold during one or more of: replacing a TRP in the one or more TRPs, removing a TRP in the one or more TRPs, or adding a TRP in the one or more TRPs.

17. The method according to claim 15, wherein: The one or more remedial actions include increasing the uplink transmit power of one or more of the first transmission and subsequent retransmissions of the one or more TRPs.

18. The method according to claim 15, wherein: The one or more remedial actions include requesting the network to perform one or more network remedial actions.

19. A user equipment UE for wireless communication, comprising: Memory; as well as a processor communicatively coupled to the memory and configured to: Identifying, by a processor of the UE, a period of low reliability of communications between one or more transmission / reception points (TRPs) in a network and the UE, wherein the communications require a reliability above a first reliability threshold, and the period of low reliability occurs when the reliability of the communications is determined to be below a second reliability threshold; as well as In response to identifying the low reliability period, performing, by the processor, one or more remedial actions by modifying a channel quality indicator (CQI) report to cause more conservative link adaptation by reporting a lower CQI value, The lower CQI value is lower than the CQI value determined by the UE, and the second reliability threshold is lower than the first reliability threshold.

20. The UE according to claim 19, wherein: The reliability of the communication is determined to be below the second reliability threshold during one or more of: replacing a TRP in the one or more TRPs, removing a TRP in the one or more TRPs, or adding a TRP in the one or more TRPs.

21. The UE according to claim 19, wherein: The one or more remedial actions include increasing the uplink transmit power of one or more of the first transmission and subsequent retransmissions of the one or more TRPs.

22. The UE according to claim 19, wherein: The one or more remedial actions include requesting the network to perform one or more network remedial actions.

23. A network entity for wireless communication, comprising: means for identifying a period of low reliability of communications between a network comprising one or more transmission / reception points TRP and a user equipment UE, wherein the communications require a reliability above a first reliability threshold and the period of low reliability occurs when the reliability of the communications is determined to be below a second reliability threshold; as well as means for causing the network to perform one or more remedial actions to increase reliability during the low reliability period by causing at least one of the one or more TRPs to request the UE to perform one or more remedial actions so that the UE performs a modified CQI report by reducing one or more CQI values ​​in the CQI report, The one or more CQI values ​​that are reduced are lower than the CQI value determined by the UE, and the second reliability threshold is lower than the first reliability threshold.

24. A user equipment UE for wireless communication, comprising: means for identifying a period of low reliability of communications between one or more transmission / reception points TRPs in a network and a UE, wherein the communications require a reliability above a first reliability threshold, and the period of low reliability occurs when the reliability of the communications is determined to be below a second reliability threshold; as well as means for, in response to identifying the low reliability period, modifying a channel quality indicator (CQI) report by reporting a lower CQI value to cause more conservative link adaptation to perform one or more remedial actions, The lower CQI value is lower than the CQI value determined by the UE, and the second reliability threshold is lower than the first reliability threshold.

25. A non-transitory computer storage medium storing instructions which, when executed by a processor, cause the processor to perform the method of any one of claims 1-12 and 15-18.

26. A computer program product comprising instructions which, when executed by a processor, cause the processor to perform the method according to any one of claims 1-12 and 15-18.

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