Systems and methods for coverage enhancement
Patent Information
- Application Number
- PCT/CN2025/108993
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2025-07-17
- Publication Date
- 2026-10-01
Smart Images

Figure CN2025108993_01102026_PF_FP_ABST
Abstract
Description
SYSTEMS AND METHODS FOR COVERAGE ENHANCEMENTTECHNICAL FIELD
[0001] The disclosure relates generally to wireless communications, including but not limited to systems and methods for coverage enhancement.BACKGROUND
[0002] The standardization organization Third Generation Partnership Project (3GPP) is currently in the process of specifying a new Radio Interface called 5G New Radio (5G NR) as well as a Next Generation Packet Core Network (NG-CN or NGC) . The 5G NR will have three main components: a 5G Access Network (5G-AN) , a 5G Core Network (5GC) , and a User Equipment (UE) . In order to facilitate the enablement of different data services and requirements, the elements of the 5GC, also called Network Functions, have been simplified with some of them being software based so that they could be adapted according to need.SUMMARY
[0003] The example embodiments disclosed herein are directed to solving the issues relating to one or more of the problems presented in the prior art, as well as providing additional features that will become readily apparent by reference to the following detailed description when taken in conjunction with the accompany drawings. In accordance with various embodiments, example systems, methods, devices and computer program products are disclosed herein. It is understood, however, that these embodiments are presented by way of example and are not limiting, and it will be apparent to those of ordinary skill in the art who read the present disclosure that various modifications to the disclosed embodiments can be made while remaining within the scope of this disclosure.
[0004] At least one aspect is directed to a system, a method, an apparatus, or a computer-readable medium for coverage enhancement. In certain implementations, a wireless communication device (e.g., UE) can determine a configuration for a first message (e.g., associated with a random access process) . The wireless communication device can communicate the first message according to the determined configuration with a wireless communication node (e.g., BS, gNB) . In certain implementations, communicating the first message may include communicating, by wireless communication device with the wireless communication node, one or more repetitions or instances of the first message. In certain implementations, communicating the first message may include at least one of the following: receiving, by the wireless communication device from the wireless communication node, the first message; or transmitting, by the wireless communication device to the wireless communication node, the first message.
[0005] In certain implementations, the first message may include at least one of the following: a physical random access (RA) channel (PRACH) transmission (e.g., PRACH or RA preamble in 4 step random access, PRACH or RA preamble in 2 step RA (e.g., MsgA PRACH, MsgA RA preamble) ) , a RA response (RAR) message (e.g., RAR in 4 step RA, MsgB RAR or MSGB includes a fallbackRAR in 2 step RA (then the 2 step RA fallback to the 4 step RA if fallback RAR) , or MSGB includes a successRAR) , a physical downlink control channel (PDCCH) transmission or downlink control information (DCI) signaling (e.g., for scheduling RAR message, successRAR or fallbackRAR, scheduling contention resolution message (e.g., Msg4) , scheduling PUSCH transmission) , a Msg3 message (e.g., Msg3 in 4 step RA type, MsgA PUSCH or MsgA payload on the associated PUSCH resource in 2 step RA type) , a contention resolution message (e.g., Msg4 message, MsgB PDSCH in 2 step RA) , a physical uplink control channel (PUCCH) transmission for Msg4 hybrid automatic repeat request acknowledgement (HARQ-ACK) (or a physical uplink control channel (PUCCH) transmission for MsgB (PDSCH) hybrid automatic repeat request acknowledgement (HARQ-ACK) ) , a physical uplink shared channel (PUSCH) message (e.g., including RRC establishment completion message or recovery completion message) , or a message without a dedicated resource being configured.
[0006] In certain implementations, determining the configuration may include at least one of the following: receiving, by the wireless communication device from the wireless communication node, a first indication, where the first indication can indicate at least one repetition factor (e.g., at least one candidate for selection / use) for the first message; receiving, by the wireless communication device from the wireless communication node, a second indication to indicate at least one repetition factor (e.g., at least one candidate for selection / use) for a second message; receiving, by the wireless communication device from the wireless communication node, a third indication to indicate at least one repetition scaling factor (e.g., at least one candidate for selection / use) for the first message; receiving, by the wireless communication device from the wireless communication node, a fourth indication to indicate at least one repetition scaling factor (e.g., at least one candidate for selection / use) for the second message; receiving, by the wireless communication device from the wireless communication node, at least one parameter (e.g., MCS, TB scaling, time-domain resource allocation, frequency-domain resource allocation, period, power) for the first message; receiving, by the wireless communication device from the wireless communication node, at least one parameter for the second message; receiving, by the wireless communication device from the wireless communication node, a fifth indication to indicate a specific repetition factor for the first message (e.g., indicate a specific repetition factor for the first message, from at least one repetition factor) ; receiving, by the wireless communication device from the wireless communication node, a sixth indication to indicate a specific repetition factor for the second message (e.g., indicate a specific repetition factor for the second message, from at least one repetition factor) ; or receiving, by the wireless communication device from the wireless communication node, a seventh indication to indicate a specific repetition scaling factor for the first message (e.g., indicate a specific repetition factor for the first message, from at least one repetition scaling factor) ; receiving, by the wireless communication device from the wireless communication node, an eighth indication to indicate a specific repetition scaling factor for the second message (e.g., indicate a specific repetition factor for the second message, from at least one repetition scaling factor) ; receiving, by the wireless communication device from the wireless communication node, a ninth indication to indicate whether the repetition of the first message is enabled or disabled; receiving, by the wireless communication device from the wireless communication node, a tenth indication to indicate whether the repetition of the second message is enabled or disabled; receiving, by the wireless communication device from the wireless communication node, at least one first threshold for the first message; receiving, by the wireless communication device from the wireless communication node, at least one second threshold for the first message; receiving, by the wireless communication device from the wireless communication node, at least one first threshold offset for the first message; receiving, by the wireless communication device from the wireless communication node, at least one first threshold scaling factor for the first message; receiving, by the wireless communication device from the wireless communication node, at least one third threshold for the second message; receiving, by the wireless communication device from the wireless communication node, at least one fourth threshold for the second message; receiving, by the wireless communication device from the wireless communication node, at least one second threshold offset for the second message; or receiving, by the wireless communication device from the wireless communication node, at least one second threshold scaling factor for the second message.
[0007] In certain implementations, the second message may include at least one of the following: a physical random access (RA) channel (PRACH) transmission (e.g., PRACH or RA preamble in 4 step random access, PRACH or RA preamble in 2 step RA (e.g., MsgA PRACH, MsgA RA preamble) ) , a RA response (RAR) message (e.g., RAR in 4 step RA, MsgB RAR, MSGB includes a fallbackRAR in 2 step RA (then the 2 step RA fallback to the 4 step RA if fallback RAR) , or MSGB includes a successRAR, a physical downlink control channel (PDCCH) transmission or downlink control information (DCI) (e.g., for scheduling RAR message, successRAR, or fallbackRAR, scheduling contention resolution message (Msg4) , scheduling PUSCH transmission) , a Msg3 message (e.g., Msg3 in 4 step RA type, MsgA PUSCH or MsgA payload on the associated PUSCH resource in 2 step RA type) , a contention resolution message (e.g., Msg4 message, MsgB PDSCH in 2 step RA) , a physical uplink control channel (PUCCH) transmission for Msg4 hybrid automatic repeat request acknowledgement (HARQ-ACK) (or a physical uplink control channel (PUCCH) transmission for MsgB (PDSCH) hybrid automatic repeat request acknowledgement (HARQ-ACK) , a physical uplink shared channel (PUSCH) message (e.g., including RRC establishment completion message or recovery completion message) , or a message without a dedicated resource being configured.
[0008] In certain implementations, the configuration may include at least one of the following: one of at least one configuration configured or indicated by the wireless communication node to the wireless communication device via at least one of the following: a radio resource control (RRC) signaling, a medium access control control element (MAC CE) signaling, a system information block (SIB) signaling, another high layer signaling, a downlink control information (DCI) signaling, or a random access response (RAR) message.
[0009] In certain implementations, the wireless communication device can report (e.g., as a request or suggestion or recommendation) at least one of the following to the wireless communication node: at least one repetition factor or at least one repetition scaling factor. In certain implementations, the wireless communication device can determine at least one repetition factor (e.g., the same as or derived using that indicated in the second indication) for the second message according to the second indication of the at least one repetition factor. The wireless communication device can determine a repetition factor (e.g., the same as or derived using that indicated in the sixth indication) for the second message according to the sixth indication of the specific repetition factor. The wireless communication device can determine at least one repetition factor for the second message according to the at least one reported repetition factor. The wireless communication device can determine a repetition factor for the second message to be at least one of the following: a repetition factor which is adjusted by the at least one repetition scaling factor for the second message; a repetition factor which is adjusted by the specific repetition scaling factor for the second message; or a repetition factor which is adjusted by the at least one reported repetition scaling factor for the second message. The wireless communication device can determine a threshold for the second message according to the at least one third threshold. The wireless communication device can determine a threshold for the second message according to the at least one fourth threshold. The wireless communication device can determine a threshold for the second message to be at least one of the following: same as a threshold for the second message which is adjusted by the at least one second threshold offset for the second message; or same as a threshold for the second message which is adjusted by the at least one second threshold scaling factor for the second message.
[0010] In certain implementations, the wireless communication device can determine at least one repetition factor for the first message according to the first indication of the at least one repetition factor. The wireless communication device can determine a repetition factor for the first message according to the fifth indication of the specific repetition factor. The wireless communication device can determine at least one repetition factor for the first message according to the at least one reported repetition factor. The wireless communication device can determine a repetition factor for the first message to be at least one of the following: same as a repetition factor for the second message; same as a repetition factor for the second message after adjustment by the at least one repetition scaling factor for the first message; same as a repetition factor for the second message after adjustment by the specific repetition scaling factor for the first message; or same as a repetition factor for the second message after adjustment by the at least one reported repetition scaling factor for the first message. The wireless communication device can determine a threshold for the first message according to the at least one first threshold. The wireless communication device can determine a threshold for the first message according to the at least one second threshold. The wireless communication device can determine a threshold for the first message to be at least one of the following: same as the threshold for the second message; same as a threshold for the second message after adjustment by the at least one first threshold offset for the first message; or same as a threshold for the second message after adjustment by the at least one first threshold scaling factor for the first message.
[0011] In certain implementations, at least one of the fifth indication, the sixth indication, the seventh indication, the eighth indication, the ninth indication, or the tenth indication can be provided via a defined field or at least one cyclic redundancy code (CRC) bit for scrambling of the DCI signaling for scheduling the first message or the second message. In certain implementations, the defined field in the DCI signaling may include at least one of the following: resource allocation type, nominal resource block groups (RBG) size, vrb-ToPRB-Interleaver, or VRB-to-PRB mapping, carrier indicator, or bandwidth part (BWP) indicator, frequency domain resource assignment, time domain resource assignment, physical resource block (PRB) bundling size indicator, rate matching indicator, zero power (ZP) channel state information reference signal (CSI-RS) trigger, modulation and coding scheme (MCS) , new data indicator, redundancy version (RV) , hybrid automatic repeat request (HARQ) process number, downlink assignment index, transmission power control (TPC) command for scheduled PUCCH, second TPC command for scheduled PUCCH, PUCCH resource indicator, PDSCH-to-HARQ_feedback timing indicator, one-shot HARQ acknowledgement (HARQ-ACK) request, enhanced type 3 codebook indicator, PDSCH group index, new feedback indicator, number of requested PDSCH group (s) , HARQ-ACK retransmission indicator, antenna port (s) , transmission configuration indication, sounding reference signal (SRS) request, SRS offset indicator, code block group (CBG) transmission information (CBGTI) , CBG flushing out information (CBGFI) , demodulation reference signal (DMRS) sequence initialization, priority indicator, ChannelAccess-CPext, minimum applicable scheduling offset indicator, secondary cell (SCell) dormancy indication, PDCCH monitoring adaptation indication, PUCCH cell indicator, uplink (UL) or secondary UL (UL / SUL) indicator, frequency hopping flag, TPC command for scheduled PUSCH, second TPC command for scheduled PUSCH, SRS resource set indicator, SRS resource indicator, second SRS resource indicator, precoding information and number of layers, or second precoding information.
[0012] In certain implementations, a specific value or state in the fifth indication can be mapped to the specific repetition factor for the first message. A specific value or state in the sixth indication can be mapped to the specific repetition factor for the second message. A specific value or state in the seventh indication can be mapped to the specific repetition scaling factor for calculating a repetition factor for the first message. A specific value or state in the eighth indication can be mapped to the specific repetition scaling factor for calculating a repetition factor for the second message. A specific value or state in the ninth indication can be mapped to enabled or disabled repetitions for the first message. A specific value or state in the tenth indication can be mapped to enabled or disabled repetitions for the second message.
[0013] In certain implementations, the wireless communication device can determine a repetition factor for the first message according to the at least one parameter of the first message or the second message. At least one parameter may include at least one of a modulation and coding scheme, transport block (TB) scaling information, time-domain resource allocation information, frequency-domain resource allocation information, a time period or periodicity, or power information. Each value of one of the at least one parameter can correspond to a respective repetition factor for the first message. In certain implementations, the wireless communication device can transmit a message to the wireless communication node. The message may include at least one of the following: a capability report, or a request, for at least one of the following: the first message to be communicated with repetition, or the second message to be communicated with repetition. In certain implementations, a capability report or a request for the first message can be the same as a capability report or a request for the second message.
[0014] In certain implementations, the message can be transmitted via at least one of the following: at least one specific RA preamble; an RA preamble transmitted on a specific RA occasion (RO) (e.g., at least one specific RA occasion) ; a Msg3 message; or a physical uplink control channel (PUCCH) transmission for Msg4 HARQ-ACK, which can be via a specific PUCCH DMRS pattern or PUCCH content. In certain implementations, the Msg3 message to use to convey the message may include at least one of the following: a high layer signaling; at least one logical channel identifier (LCID) of a medium access control (MAC) subheader of the Msg3 message; at least one bit in a MAC subheader of the Msg3 message; a physical signaling; at least one specific demodulation reference signal (DMRS) ports; or scrambling of cyclic redundancy check (CRC) of the Msg3 message with a specific value of temporary cell radio network temporary identifier (TC-RNTI) . In certain implementations, the Msg3 message may include a second message transmitted on an uplink shared channel (UL-SCH) that includes at least one of the following: a cell radio network temporary identifier (C-RNTI) , a media access control control element (MAC CE) , or a common control channel (CCCH) service data unit (SDU) , from upper layer and associated with a user equipment (UE) contention resolution identity, as part of a random access procedure.
[0015] In certain implementations, the wireless communication device can determine to transmit the message, or that a capability report or a request for the first message can be the same as a capability report or a request for the second message, when (e.g., in response to, or upon occurrence of the following condition (s) ) at least one of the following conditions is satisfied: one or more repetition factors are configured for the first message or the second message; one or more repetition scaling factors are configured for the first message or the second message; a measured reference signal received power (RSRP) is lower than a first threshold configured by a high layer signaling; a measured signal state of a downlink signal is lower than a second threshold configured by a high layer signaling; a measured reference signal received power (RSRP) is lower than a third threshold configured by a high layer signaling; a measured signal state of a downlink signal is lower than a fourth threshold configured by a high layer signaling; repetition of the second message is enabled via high layer signaling or a DCI signaling, or the second message is transmitted with repetition using a specific repetition factor; or repetition of the first message is enabled via high layer signaling or a DCI signaling.
[0016] In certain implementations, the wireless communication device can determine (e.g., where a DCI signaling is used to indicate from a plurality of candidate repetition factors and / or repetition scaling factors) to determine at least one of the fifth indication, the sixth indication, the seventh indication, the eighth indication, the ninth indication, or the tenth indication according to the defined field or the at least one CRC bit, when (e.g., in response to, or upon occurrence of the following conditions) at least one of the following conditions is satisfied: an RSRP is lower than a first threshold configured or indicated by a high layer signaling; a measured signal state of a downlink signal is lower than a second threshold configured by a high layer signaling; a measured reference signal received power (RSRP) is lower than a third threshold configured by a high layer signaling; a measured signal state of a downlink signal is lower than a fourth threshold configured by a high layer signaling; the wireless communication device sends or provides a capability report or a repetition request; at least one repetition factor is configured or indicated; a plurality of repetition factors are configured or indicated; at least one repetition scaling factor is configured or indicated; a plurality of repetition scaling factors are configured or indicated; the wireless communication device is capable of communicating the first message with repetition but may not have transmitted at least one of the request or the capability report for communicating first message with repetition; the wireless communication device is capable of communicating the second message with repetition but may not have transmitted at least one of the request or the capability report for communicating the second message with repetition; repetition of the second message is enabled via high layer signaling or a DCI signaling, or the second message is transmitted with repetition using a repetition factor; or repetition of the first message is enabled via high layer signaling or a DCI signaling.
[0017] In certain implementations, a wireless communication node can communicate a first message according to a configuration with a wireless communication device. The configuration for the first message can be determined by the wireless communication device.
[0018] Although the examples provided herein are directed toward addressing redundancy in configuration signaling while maintaining configuration flexibility, the systems and methods of the present disclosure are applicable to various aspects of coverage enhancement implementations. For example, the technical solutions disclosed herein can facilitate efficient reuse and association of repetition configuration parameters across channels or signals, according to at least one of the following example configurations (e.g., aspects, features, or solutions) :
[0019] · Example configuration 1: Indication or Configuration of Repetition Factors, Scaling Factors, or Offsets.
[0020] · Example configuration 2: Capability Reporting or Requesting Repetition for the First Message.
[0021] · Example configuration 3: Conditional Repetition Capability Reporting or Requesting Repetition for the First Message.
[0022] · Example configuration 4: Conditional Determination of Repetition Factors or Repetition Scaling Factors.BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Various example embodiments of the present solution are described in detail below with reference to the following figures or drawings. The drawings are provided for purposes of illustration only and merely depict example embodiments of the present solution to facilitate the reader’s understanding of the present solution. Therefore, the drawings should not be considered limiting of the breadth, scope, or applicability of the present solution. It should be noted that for clarity and ease of illustration, these drawings are not necessarily drawn to scale.
[0024] FIG. 1 illustrates an example cellular communication network in which techniques disclosed herein may be implemented, in accordance with an embodiment of the present disclosure;
[0025] FIG. 2 illustrates a block diagram of an example base station and a user equipment device, in accordance with some embodiments of the present disclosure;
[0026] FIG. 3 illustrates an example non-terrestrial network, in accordance with some embodiments of the present disclosure;
[0027] FIG. 4 illustrates example connection establishment, in accordance with some embodiments of the present disclosure; and
[0028] FIG. 5 illustrates a flow diagram of an example method for coverage enhancement, in accordance with an embodiment of the present disclosure.DETAILED DESCRIPTION
[0029] Various example embodiments of the present solution are described below with reference to the accompanying figures to enable a person of ordinary skill in the art to make and use the present solution. As would be apparent to those of ordinary skill in the art, after reading the present disclosure, various changes or modifications to the examples described herein can be made without departing from the scope of the present solution. Thus, the present solution is not limited to the example embodiments and applications described and illustrated herein. Additionally, the specific order or hierarchy of steps in the methods disclosed herein are merely example approaches. Based upon design preferences, the specific order or hierarchy of steps of the disclosed methods or processes can be re-arranged while remaining within the scope of the present solution. Thus, those of ordinary skill in the art will understand that the methods and techniques disclosed herein present various steps or acts in a sample order, and the present solution is not limited to the specific order or hierarchy presented unless expressly stated otherwise.
[0030] 1. Mobile Communication Technology and Environment
[0031] FIG. 1 illustrates an example wireless communication network, and / or system, 100 in which techniques disclosed herein may be implemented, in accordance with an embodiment of the present disclosure. In the following discussion, the wireless communication network 100 may be any wireless network, such as a cellular network or a narrowband Internet of things (NB-IoT) network, and is herein referred to as “network 100. ” Such an example network 100 includes a base station 102 (hereinafter “BS 102” ; also referred to as wireless communication node) and a user equipment device 104 (hereinafter “UE 104” ; also referred to as wireless communication device) that can communicate with each other via a communication link 110 (e.g., a wireless communication channel) , and a cluster of cells 126, 130, 132, 134, 136, 138 and 140 overlaying a geographical area 101. In Figure 1, the BS 102 and UE 104 are contained within a respective geographic boundary of cell 126. Each of the other cells 130, 132, 134, 136, 138 and 140 may include at least one base station operating at its allocated bandwidth to provide adequate radio coverage to its intended users.
[0032] For example, the BS 102 may operate at an allocated channel transmission bandwidth to provide adequate coverage to the UE 104. The BS 102 and the UE 104 may communicate via a downlink radio frame 118, and an uplink radio frame 124 respectively. Each radio frame 118 / 124 may be further divided into sub-frames 120 / 127 which may include data symbols 122 / 128. In the present disclosure, the BS 102 and UE 104 are described herein as non-limiting examples of “communication nodes, ” generally, which can practice the methods disclosed herein. Such communication nodes may be capable of wireless and / or wired communications, in accordance with various embodiments of the present solution.
[0033] FIG. 2 illustrates a block diagram of an example wireless communication system 200 for transmitting and receiving wireless communication signals (e.g., OFDM or OFDMA signals) in accordance with some embodiments of the present solution. The system 200 may include components and elements configured to support known or conventional operating features that need not be described in detail herein. In one illustrative embodiment, system 200 can be used to communicate (e.g., transmit and receive) data symbols in a wireless communication environment such as the wireless communication environment 100 of Figure 1, as described above.
[0034] System 200 generally includes a base station 202 (hereinafter “BS 202” ) and a user equipment device 204 (hereinafter “UE 204” ) . The BS 202 includes a BS (base station) transceiver module 210, a BS antenna 212, a BS processor module 214, a BS memory module 216, and a network communication module 218, each module being coupled and interconnected with one another as necessary via a data communication bus 220. The UE 204 includes a UE (user equipment) transceiver module 230, a UE antenna 232, a UE memory module 234, and a UE processor module 236, each module being coupled and interconnected with one another as necessary via a data communication bus 240. The BS 202 communicates with the UE 204 via a communication channel 250, which can be any wireless channel or other medium suitable for transmission of data as described herein.
[0035] As would be understood by persons of ordinary skill in the art, system 200 may further include any number of modules other than the modules shown in Figure 2. Those skilled in the art will understand that the various illustrative blocks, modules, circuits, and processing logic described in connection with the embodiments disclosed herein may be implemented in hardware, computer-readable software, firmware, or any practical combination thereof. To clearly illustrate this interchangeability and compatibility of hardware, firmware, and software, various illustrative components, blocks, modules, circuits, and steps are described generally in terms of their functionality. Whether such functionality is implemented as hardware, firmware, or software can depend upon the particular application and design constraints imposed on the overall system. Those familiar with the concepts described herein may implement such functionality in a suitable manner for each particular application, but such implementation decisions should not be interpreted as limiting the scope of the present disclosure
[0036] In accordance with some embodiments, the UE transceiver 230 may be referred to herein as an “uplink” transceiver 230 that includes a radio frequency (RF) transmitter and a RF receiver each comprising circuitry that is coupled to the antenna 232. A duplex switch (not shown) may alternatively couple the uplink transmitter or receiver to the uplink antenna in time duplex fashion. Similarly, in accordance with some embodiments, the BS transceiver 210 may be referred to herein as a “downlink” transceiver 210 that includes a RF transmitter and a RF receiver each comprising circuity that is coupled to the antenna 212. A downlink duplex switch may alternatively couple the downlink transmitter or receiver to the downlink antenna 212 in time duplex fashion. The operations of the two transceiver modules 210 and 230 may be coordinated in time such that the uplink receiver circuitry is coupled to the uplink antenna 232 for reception of transmissions over the wireless transmission link 250 at the same time that the downlink transmitter is coupled to the downlink antenna 212. Conversely, the operations of the two transceivers 210 and 230 may be coordinated in time such that the downlink receiver is coupled to the downlink antenna 212 for reception of transmissions over the wireless transmission link 250 at the same time that the uplink transmitter is coupled to the uplink antenna 232. In some embodiments, there is close time synchronization with a minimal guard time between changes in duplex direction.
[0037] The UE transceiver 230 and the base station transceiver 210 are configured to communicate via the wireless data communication link 250, and cooperate with a suitably configured RF antenna arrangement 212 / 232 that can support a particular wireless communication protocol and modulation scheme. In some illustrative embodiments, the UE transceiver 210 and the base station transceiver 210 are configured to support industry standards such as the Long Term Evolution (LTE) and emerging 5G standards, and the like. It is understood, however, that the present disclosure is not necessarily limited in application to a particular standard and associated protocols. Rather, the UE transceiver 230 and the base station transceiver 210 may be configured to support alternate, or additional, wireless data communication protocols, including future standards or variations thereof.
[0038] In accordance with various embodiments, the BS 202 may be an evolved node B (eNB) , a serving eNB, a target eNB, a femto station, or a pico station, for example. In certain implementations, the UE 204 may be embodied in various types of user devices such as a mobile phone, a smart phone, a personal digital assistant (PDA) , tablet, laptop computer, wearable computing device, etc. The processor modules 214 and 236 may be implemented, or realized, with a general purpose processor, a content addressable memory, a digital signal processor, an application specific integrated circuit, a field programmable gate array, any suitable programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof, designed to perform the functions described herein. In this manner, a processor may be realized as a microprocessor, a controller, a microcontroller, a state machine, or the like. A processor may also be implemented as a combination of computing devices, e.g., a combination of a digital signal processor and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a digital signal processor core, or any other such configuration.
[0039] Furthermore, the steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied directly in hardware, in firmware, in a software module executed by processor modules 214 and 236, respectively, or in any practical combination thereof. The memory modules 216 and 234 may be realized as RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, a hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art. In this regard, memory modules 216 and 234 may be coupled to the processor modules 210 and 230, respectively, such that the processors modules 210 and 230 can read information from, and write information to, memory modules 216 and 234, respectively. The memory modules 216 and 234 may also be integrated into their respective processor modules 210 and 230. In certain implementations, the memory modules 216 and 234 may each include a cache memory for storing temporary variables or other intermediate information during execution of instructions to be executed by processor modules 210 and 230, respectively. Memory modules 216 and 234 may also each include non-volatile memory for storing instructions to be executed by the processor modules 210 and 230, respectively.
[0040] The network communication module 218 generally represents the hardware, software, firmware, processing logic, and / or other components of the base station 202 that enable bi-directional communication between base station transceiver 210 and other network components and communication nodes configured to communication with the base station 202. For example, network communication module 218 may be configured to support internet or WiMAX traffic. In a typical deployment, without limitation, network communication module 218 provides an 802.3 Ethernet interface such that base station transceiver 210 can communicate with a conventional Ethernet based computer network. In this manner, the network communication module 218 may include a physical interface for connection to the computer network (e.g., Mobile Switching Center (MSC) ) . The terms “configured for, ” “configured to” and conjugations thereof, as used herein with respect to a specified operation or function, refer to a device, component, circuit, structure, machine, signal, etc., that is physically constructed, programmed, formatted and / or arranged to perform the specified operation or function.
[0041] The Open Systems Interconnection (OSI) Model (referred to herein as, “open system interconnection model” ) is a conceptual and logical layout that defines network communication used by systems (e.g., wireless communication device, wireless communication node) open to interconnection and communication with other systems. The model is broken into seven subcomponents, or layers, each of which represents a conceptual collection of services provided to the layers above and below it. The OSI Model also defines a logical network and effectively describes computer packet transfer by using different layer protocols. The OSI Model may also be referred to as the seven-layer OSI Model or the seven-layer model. In certain implementations, a first layer may be a physical layer. In certain implementations, a second layer may be a Medium Access Control (MAC) layer. In certain implementations, a third layer may be a Radio Link Control (RLC) layer. In certain implementations, a fourth layer may be a Packet Data Convergence Protocol (PDCP) layer. In certain implementations, a fifth layer may be a Radio Resource Control (RRC) layer. In certain implementations, a sixth layer may be a Non Access Stratum (NAS) layer or an Internet Protocol (IP) layer, and the seventh layer being the other layer.
[0042] 2. Systems and Methods for Coverage Enhancement
[0043] In 3GPP specifications, support for non-terrestrial networks (NTN) is included, with network coverage performance indicating an important consideration for network operators. In some implementations (e.g., in R17) , coverage enhancement is performed for the PUSCH (e.g., Msg3 message) in the random access procedure, and repeated transmission is supported. In some implementations (e.g., in Rel-18) , PRACH coverage enhancement has been specified as NR enhancement, such as PRACH (Msg1 message) repetition. Additionally, coverage enhancement can be specified as NR-NTN enhancement, such as PUCCH for Msg4 message HARQ-ACK. In some implementations (e.g., in R19) , due to the coverage bottleneck, the discussion of Msg4 coverage enhancement has made a preliminary conclusion. For example, when repeated transmission is supported, the maximum number of repetitions can be set to two or four, as configured by a high layer signaling. Repetition capability reports or requests for repetition can be reported or requested through higher-layer parameters of the Msg3 message, and repetition can be activated or enabled via downlink control information (DCI) for scheduling the Msg4 message. However, with the introduction of repetition mechanisms in more channels, each channel may have a corresponding independent repetition configuration mechanism. Such a configuration can result in a significant increase in the number of repetitive configuration parameters in the system, increased RRC signaling overhead, increased UE-side processing complexity, or longer delays in the access process / procedure, particularly in weak NTN coverage instances. In this regard, the technical solutions described herein address the redundancy of redundant configuration signaling while maintaining configuration flexibility in coverage enhancement implementations.
[0044] In certain implementations, an association or reuse mechanism can be established between the repetition configuration of a certain channel or signal and the repetition configuration of other channels or signals. By introducing a reuse or mapping mechanism between repetition configurations, the number of repetition configuration parameters can be reduced, RRC signaling load can be lowered, and access latency can be shortened without reducing the flexibility of duplicate or repeated transmission. Such implementations can support scalability and deployment efficiency of NTN systems. The technical solutions described herein address enhancement for the first message, including but not limited to the following:
[0045] configuration or indication of repetition factor (s) or repetition scaling factor (s) or offset (s) ;
[0046] “capability report” or “request for repetition” of the first message;
[0047] condition of repetition capability report or request for repetition for the first message; or
[0048] condition of determining repetition factor (s) or repetition scaling factor (s) .
[0049] FIG. 3 illustrates an example transparent NTN structure. As shown, the link between UE and satellite is referred to as a service link. The link between the base station (BS) and satellite is referred to as a feeder link, which can be common for all UEs within the same cell.
[0050] FIG. 4 illustrates example connection establishment, including random access channel (RACH) and radio resource control (RRC) connection procedures. For example, as shown in FIG. 4, the random access process can be initiated with the transmission of a random access preamble sequence, such as a Msg1 message. The time-frequency resources for sending / transmitting / providing a random access preamble sequence can be referred to as PRACH resources represented by one or more PRACH occasions (e.g., the time-frequency resources can be used for sending a random access preamble sequence broadcasted by the network side to all UEs in SIB signaling) . The UE can select a random access preamble sequence and can send / transmit / provide the random access preamble sequence on the PRACH resources with a specific random access identifier (RA-RNTI) .
[0051] The network can detect multiple possible random access attempts (such as from different UEs) and can respond to the detected random access. The response information can be transmitted on the DL-SCH as a random access response (RAR) , and the RAR can be scheduled by PDCCH carrying DCI, for which the corresponding CRC is scrambled by the RA-RNTI. The UE can detect the PDCCH carrying DCI within a configurable RAR window to receive / obtain / acquire the random access response, including RAPID or TC-RNTI, and can determine whether the RAPID included in the random access response matches the RAPID sent by the UE.
[0052] The UE can detect a random access response, and can use the UL-SCH resource indicated by the random access response to send / transmit a PUSCH (e.g., a Msg3 message) to the network side. In certain implementations, where the UE includes a corresponding identifier, such as C-RNTI, the C-RNTI can be carried in the Msg3 message. In certain implementations, where the UE may not include the corresponding identifier, such as C-RNTI, an identifier associated with the UE in the core network can be carried in the Msg3 message. Such a message can be used for RRC establishment requests.
[0053] The network side can send a contention resolution message, e.g., a Msg4 message. In certain implementations, where the Msg3 message carries C-RNTI, the network side may use C-RNTI to scramble the PDCCH scheduling Msg4 message. In certain implementations, where Msg3 message may / does not carry C-RNTI, TC-RNTI can be used to scramble the PDCCH scheduling Msg4 message.
[0054] In certain implementations, UEs with unique identifiers (such as C-RNTI) can use C-RNTI to address transmissions on the PDCCH. In certain implementations, where a PDCCH (DCI) scrambled by C-RNTI is detected, the contention can be considered successful and the random access can be considered successful. In certain implementations, a UE without a corresponding identifier can be addressed on the PDCCH using TC-RNTI, and the scheduled DL-SCH may include a contention resolution message. The core network identifier included in the contention resolution message can be compared with the core network identifier sent by the UE in the Msg3 message. In certain implementations, where the identifier in the contention resolution message matches the identifier transmitted in the Msg3 message, the contention can be considered successful and the random access can be considered successful. The UE can then set the C-RNTI to the value of the TC-RNTI. The UE can generate and can send / transmit a HARQ-ACK response via PUCCH (PUCCH for Msg4 message HARQ-ACK) .
[0055] In certain implementations, where the UE is restoring or reestablishing the RRC connection and the network is unable to search or verify the UE context, the UE can send / transmit an RRC setup complete response (e.g., a Msg5 message: RRCSetup Complete) to the network side after receiving RRC setup (e.g., a Msg4 message: RRCSetup) , carried by the PUSCH channel. The PUSCH (Msg5 message) can be scheduled by DCI format 0_0, and the UE can send / transmit an RRC establishment completion message based on the scheduling information in DCI.
[0056] The network can configure the RSRP threshold used to determine the number of PRACH transmissions, repetition factors, or the transmission scheme to differentiate between multiple PRACH transmissions with different numbers of repetitions (e.g., multiple PRACH transmissions with different numbers of repetitions are transmitted on separate ROs, or multiple PRACH transmissions with different numbers are transmitted with separate preambles on shared ROs) . For multiple PRACH transmissions with the same Tx beam, “RO group” can be assumed for multiple PRACH transmissions with separate preambles on shared ROs or multiple PRACH transmissions on separate ROs, and one RO group may include valid RO (s) for a specific number of multiple PRACH transmissions. In certain implementations, where only one value (or number of repetitions) is configured for multiple PRACH transmissions, the number of valid ROs in the RO group can be equal to this value. In certain implementations, where multiple values are configured for multiple PRACH transmissions, for each value, the number of valid ROs in the RO group can be equal to the corresponding number of multiple PRACH transmissions.
[0057] The network can configure the RSRP threshold used to determine whether to request Msg3 message repetition (configured by RSRP ThresholdMsg3) , set (s) of Random Access resources (preamble) with or without msg3-Repetitions, repetition factor (if configured, indicated by numberOfMsg3 RepetitionsList) , RACH occasions, and other messages, where the threshold range is {0. . . 127} . In certain implementations, where the BWP selected for the random access procedure is configured with both set (s) of random access resources with msg3-Repetitions set to true and set (s) of random access resources without msg3-Repetitions set to true, and the RSRP of the downlink pathloss reference is less than rsrp-ThresholdMsg3, the UE can assume that MSG3 message repetition is applicable for the current random access procedure. In certain implementations, the BWP selected for random access procedure is configured with the set (s) of random access resources with msg3-Repetitions set to true, the UE can transmit a specific preamble at the configured PRACH transmission resource. In certain implementations, where a specific preamble is detected by the network, it is determined that the corresponding UE can send / transmit a Msg3 message repetition request. The base station can decide / determine whether to schedule Msg3 message repeat transmission and can indicate the number of repetitions (which can be 1) by the 2 MSBs of the MCS information field of the RAR UL grant. The remaining bits of the MCS field can be used to indicate the MCS index. The UE can obtain the Msg3 message transmission configuration by decoding Msg2 message and can perform Msg3 message transmission according to the corresponding configuration.
[0058] The network can configure a repetition factor of 2 or 4 via a high layer signaling (e.g., SIB1) , and the UE can provide in the PUSCH transmission a request to receive / obtain / acquire the PDSCH (e.g., Msg4 message) with repetitions. In certain implementations, where the UE provides the request and the MSB value of the MCS field in the DCI format 1_0 is 1, the UE can assume that the PDSCH reception is with the configured repetition factor.
[0059] The network can configure the RSRP threshold used to determine whether to report PUCCH repetition for Msg4 message HARQ-ACK, the repetition factor, and resource information. The threshold range can be {0. . . 127} , and the repetition factor can be selected from at least one of {1,2, 4, 8} . In certain implementations, where an RSRP threshold is configured, the UE can measure / determine whether the RSRP of the downlink signal is lower than the configured threshold. If the RSRP threshold is lower than the configured threshold, the capability of PUCCH repetition can be reported in the Msg3 message. In certain implementations, where the RSRP threshold is not configured, the UE can report PUCCH repetition capability in the Msg3 message. In certain implementations, upon detecting Msg3 message on the network side, the UE can determine whether to perform PUCCH repetition based on the following rules: (i) if one repetition factor is configured via SIB signaling, the UE can perform PUCCH repetition transmission according to the configured repetition factor; or (ii) if multiple repetition factors are configured via SIB signaling, the base station can decide / determine whether to schedule PUCCH repetition and indicate the number of repeated transmissions by the 2 bits of the DAI information field in the DCI for scheduling Msg4 message. The UE can decode the DCI to obtain the PUCCH transmission configuration and perform PUCCH transmission according to the corresponding configuration.
[0060] The technical solutions described herein are also applicable to the contention-based four-step random access, two-step random access, non-contention-based random access, or random access process free of Msg1 message and Msg2 message in NR, LTE, LTE-A, eMTC, NB IoT, and 6G, such that when the first message is to be sent, the enhancement method in the implementations of the present disclosure can be used. Additionally, message-specific clarifications as described herein are provided as follows.
[0061] Msg1 message can correspond to the random access preamble sequence. The time-frequency resources for sending / transmitting a random access preamble sequence can be referred to as a PRACH occasion (e.g., the time-frequency resources allowed for sending a random access preamble sequence broadcasted by the network side to all terminals in SIB signaling) . The terminal can select a random access preamble sequence and can send it on the PRACH resources.
[0062] Msg2 message can correspond to at least one of a physical downlink control information, which can be carried on the physical downlink control channel (PDCCH) or the random access responses (RAR) scheduled by DCI / PDCCH;
[0063] Msg3 message can correspond to a message transmitted on UL-SCH containing a C-RNTI MAC CE or CCCH SDU, submitted from the upper layer and associated with the UE Contention Resolution Identity, as part of a Random Access procedure;
[0064] Msg4 message can correspond to at least one of a physical downlink control information (DCI) , which can be carried on the physical downlink control channel (PDCCH) , or the contention resolution messages scheduled by DCI / PDCCH; or Msg5 message can correspond to an RRC establishment completion message or recovery completion message, carried on PUSCH, indicating that the UE enters the RRC connected state.
[0065] In certain implementations, the first message can be at least one of the following: an RAR message, DCI (that is) scheduling RAR / fallback RAR, Msg3 message, a contention resolution message, a DCI scheduling contention resolution message, PUCCH for Msg4 message HARQ-ACK (e.g., a PUCCH transmission for communicating HARQ-ACK of the earlier received Msg4 message) , PUSCH (e.g., RRC establishment completion message or recovery completion message) , or DCI scheduling PUSCH. In certain implementations, the second message can be at least one of the following: PRACH, an RAR message, DCI scheduling RAR, Msg3 message, a contention resolution message, a DCI scheduling contention resolution message, PUCCH for Msg4 message HARQ-ACK, PUSCH (e.g., RRC establishment completion message or recovery completion message) , or DCI scheduling PUSCH. In certain implementations, the first message can be different from the second message.
[0066] In certain implementations, for the network configuration / indication, the configuration / indication may correspond to at least one of the following:
[0067] Master information, e.g., master information block (MIB) .
[0068] System information, e.g., system information block (SIB) .
[0069] Broadcast channel / information, e.g., physical broadcast channel (PBCH) .
[0070] Multicast channel / information, e.g., group common downlink control information (DCI) .
[0071] Radio resource configuration signaling, e.g., RRC signaling.
[0072] MAC signaling, e.g., MAC CE, MAC header / subheader, RAR (e.g., MAC RAR, fallback RAR, success RAR, etc. ) , MAC (sub) PDU, MAC SDU, MAC payload, MAC payload for RAR, MAC payload for MsgB.
[0073] Downlink control information / channel, e.g., physical downlink control channel (PDCCH) , DCI.
[0074] Parameter for physical signal, e.g., scrambling sequence, seed of scrambling sequence, etc.
[0075] NAS signaling.
[0076] In certain implementations, the configuration / indication / report may include at least one of the following:
[0077] define / introduce a new or dedicated bit field for indication.
[0078] reuse / reinterpret / repurpose an existing bit field for indication. The configuration may include at least one of the following:
[0079] reuse at least one bit of the existing field, e.g., MSB of bit field, for indication of first information (e.g., the indication / configuration of the first message, or the indication / configuration of the second message) .
[0080] reduce the bit field length of the existing field, e.g., reducing an N-bit field to an (N-K) -bit field, and then using the at least one saved bit to indicate first information. For detailed implementation, when enabling indication of the first information (or enabling the corresponding function / feature) , the length of at least one existing bit field is reduced or at least one existing bit field is not present, and at least one new bit field is present (e.g., for indicating the first information or the information of the existing field that is not present) , or the length of at least one existing bit field is increased.
[0081] reuse / reinterpret / repurpose codepoint or state of existing bit field for indication.
[0082] define / introduce a new or dedicated IE (information element) for indication.
[0083] reuse / reinterpret / repurpose candidate values / states of existing IE for indication.
[0084] define / introduce new or dedicated MAC CE for indication, e.g., via a dedicated bit field.
[0085] define / introduce a new or dedicated MAC (sub) header and indicate via (e) LCID codepoint or a dedicated bit field.
[0086] indicate via the information of physical signal or scrambling, e.g., RNTI, code sequence, root / seed of sequence, etc.
[0087] predefine / introduce new tables for a configuration / indication.
[0088] modify existing tables, e.g., add a new column / row, reuse / reinterpret / repurpose existing information / field / entry.
[0089] In certain implementations, for any indication, network or UE may direct indicate an integer value (within certain range) , or a enumerated value (within a list) , or an index (indicating a value / configuration / item in a table defined in standard) , or a value / order of a set of candidates (defined in standard, configured by network, or reported by UE) , or a choice of a value or value list. In certain implementations, at least one default value may be defined when the signaling for indication is absent.
[0090] The bit field (e.g., for reuse / reinterpret / repurpose) in the DCI may include at least one of the following: resource assignment, Frequency domain resource assignment, Time domain resource assignment, Frequency hopping flag, Modulation and coding scheme, New data indicator, Redundancy version, HARQ process number, TPC command (e.g., for PUSCH / PUCCH) , channel access type, CP extension, UL / SUL indicator, Carrier indicator, DFI flag, HARQ-ACK bitmap, Bandwidth part indicator, Redundancy version, Transform precoder indicator, downlink assignment index, SRS resource set indicator, SRS resource indicator, SRS request, SRS offset indicator, Precoding information and number of layers, Antenna ports, CSI request, CBG transmission information, CBG flushing out information, PTRS-DMRS association, beta_offset indicator, DMRS sequence initialization, UL-SCH indicator, Open-loop power control parameter set indication, Priority indicator, Invalid symbol pattern indicator, Minimum applicable scheduling offset indicator, SCell dormancy indication, Sidelink assignment index, PDCCH monitoring adaptation indication, Random Access Preamble index, SS / PBCH index, PRACH Mask index, Cell indicator, PRACH association indicator, PRACH retransmission indicator, VRB-to-PRB mapping, PUCCH resource indicator, PDSCH-to-HARQ_feedback timing indicator, Short Messages Indicator, Short Messages / Direct Indication information, TB scaling, TRS availability indication, System information indicator, LSBs of SFN, PRB bundling size indicator, Rate matching indicator, ZP CSI-RS trigger, One-shot HARQ-ACK request, Enhanced Type 3 codebook indicator, PDSCH group index, Number of requested PDSCH group (s) , HARQ-ACK retransmission indicator, Transmission configuration indication, TCI selection, Co-scheduled UE information, MCCH change notification, Subcarrier indication, Scheduling delay, Repetition number, DCI subframe repetition number, Number of scheduled TB for Unicast / SC-MTCH, Resource reservation, ACK or Fallback indicator, PUSCH / PRACH / PUCCH repetition adjustment, Timing advance adjustment, Preamble format indicator, starting number of PUSCH / PRACH / PUCCH repetitions, Flag for paging / direct indication differentiation, reserved / spare bits.
[0091] In certain implementations, to improve the coverage performance of the first message, the following methods / implementations / configurations can be considered.
[0092] Configuration 1: Configuration or Indication of Repetition Factor (S) or Repetition Scaling Factor (S) for the First Message.
[0093] 1) Repetition factor (s) of the first message can be configured or indicated via the high layer signaling (e.g., RRC signaling, MAC CE signaling, SIB signaling, etc. ) , such as configuring or indicating a repetition factor from a set of supported or candidate repetition factors (e.g., 1, 2, 4, 8) , or configuring or indicating multiple repeating factors.
[0094] Configure or indicate a repetition factor through high-layer signaling, which can be used by the UE to send / transmit or receive / obtain the first messages.
[0095] Configure or indicate multiple repetition factors, dynamically indicating the UE specific repetition factors through the first DCI signaling, and the UE can send or receive the first messages using specific repetition factors.
[0096] ■ The first DCI signaling can be a DCI for scheduling the first message, which can be via a newly defined field in the DCI signaling, or existing fields in the DCI can be reused or repurposed.
[0097] 2) The repetition factor of the first message can reuse the repetition factor configuration or indication of the second message.
[0098] When only one repetition factor for the second message can be configured or indicated via high layer signaling, the repetition factor can be used as the repetition factor for both the second message and the first message. The UE can use this repetition factor to send or receive the second message and the first message.
[0099] When multiple repetition factors for the second message are configured or indicated, the UE specific repetition factors can be indicated by the second DCI signaling, for example, the second DCI signaling is used to indicate the UE specific repetition factors, which can be used for the repetition factors of the second message and the first message. The UE can send or receive the second message using the indicated repetition factors and can send or receive the first message using the indicated repetition factors.
[0100] ■ The second DCI signaling can be a DCI scheduling the second message, which can be newly defined in the DCI signaling, or existing fields in the DCI can be reused or repurposed.
[0101] When multiple repetition factors for the second message are configured or indicated, the UE can reuse these repetition factors, report (requested or suggested) repetition factors, and use reported (requested or suggested) repetition factors to send or receive the first message and the second message.
[0102] When multiple repetition factors for the second message are configured or indicated, the UE can reuse these repetition factors, report (requested or suggested) repetition factors, and the network can indicate whether to use the repetition factor reported by the UE through the first DCI signaling.
[0103] ■ If the first DCI signaling indicates the use of the repetition factor reported by the UE, the UE can send or receive the first message using the reported repetition factor.
[0104] ■ If the first DCI signaling indicates not to use the repetition factor reported by the UE, the UE may not use the reported repetition factor to send / transmit PUSCH messages or may not send PUSCH messages with repetition factor.
[0105] ■ If the first DCI signaling indicates that the UE can use another repetition factor, the UE may not use the reported repetition factor and can send or receive the first message using another repetition factor indicated by the network.
[0106] ■ If the first DCI signaling may not indicate a repetition factor, the UE directly can send or receive the first message using the reported repetition factor.
[0107] ■ If the first DCI signaling may not indicate a repetition factor, the UE may not use the reported repetition factor to send or receive the first message with repetition factor.
[0108] 3) The repetition factor of the first message can be configured or indicated by reusing the repetition factor of the second message and scaled by the repetition scaling factor. The repetition scaling factor can be configured or indicated by high-layer configuration signaling (such as RRC signaling, MAC CE signaling, or SIB signaling) , or predefined.
[0109] When only one repetition factor for the second message is configured or indicated, and only one scaling factor is configured or indicated for the first message, or when a scaling factor is predefined, that one repetition factor can be used for the repetition factor of the second message, and the repetition factor of the second message can be scaled to obtain the actual repetition factor of the first message. The UE can send or receive the second message using that one repetition factor and can send or receive the first message using the actual repetition factor.
[0110] When only one repetition factor for the second message is configured or indicated, and multiple scaling factors for the first message or when multiple scaling factors are predefined, this repetition factor can be used for the repetition factor of the second message, and a third DCI signaling can be used to indicate the specific scaling factor of the first message. The UE can use the indicated scaling factor to scale the repetition factor of the second message to obtain the actual repetition factor of the first message. The UE can send or receive the second message using the repetition factor and can send or receive the PUSCH message using the actual repetition factor.
[0111] ■ The third DCI signaling can be the DCI signaling for scheduling the second message, or the DCI signaling for scheduling the first message, which can be newly added fields or reused fields in DCI.
[0112] When multiple repetition factors for the second message are configured or indicated, the UE specific repetition factor can be indicated by the second DCI signaling or by a random access response message, and only one scaling factor for the first message can be configured. This repetition factor can be used for the repetition factor of the second message, and the configured or indicated scaling factor can be used to scale the repetition factor to obtain the actual repetition factor of the first message. The UE can send or receive the second message using the indicated repetition factor and can send or receive the first message using the actual repetition factor.
[0113] When multiple repetition factors for the second message are configured or indicated, the UE specific repetition factors can be indicated by the second DCI signaling or by a random access response message, and multiple scaling factors for the first messages can be configured or indicated and can use a third DCI signaling to indicate the specific scaling factors for the first messages. The indicated repetition factor can be used for the repetition factor of the second message, and the UE can use the indicated scaling factor to scale the repetition factor of the indicated second message to obtain the actual repetition factor of the first message. The UE can send or receive the second message using the repetition factor of the second message and can send or receive the first message using the actual repetition factor.
[0114] 4) The repetition factor of the first message can be associated with the parameters of the second message. Such parameters may include at least one of the following parameters: MCS, TB scaling, time-domain resource allocation, frequency-domain resource allocation, period, or power. For the parameters of the second message, each configuration or indication / value can correspond to a repetition factor of the first message. The UE can determine the repetition factor of the first message based on the parameter configuration or indication of the second message. For example:
[0115] For the TB scaling parameter of the second message, each value can correspond to a repetition factor of the first message. For example, when the field of TB scaling is “00, ” the TB scaling factor corresponding to the second message is 1, and the TB scaling factor can also correspond to the repetition factor X of the first message. When the field of TB scaling is “01, ” the TB scaling factor corresponding to the second message is 0.5, and the TB scaling factor can also correspond to the repetition factor Y of the first message, and so on. The larger TB scale factor of the second message can correspond to higher bitrate and indicate better channel conditions, which corresponds to a lower repetition factor for the first message.
[0116] For the MCS parameters of the second message, each value or set of values can correspond to a repetition factor of the first message. MCS values [0, ..., M] correspond to the repetition factor X of the first message, MCS values [M+1, ..., N] correspond to the repetition factor Y of the first message, and so on. The larger second message MCS can correspond to higher bit rates and indicate better channel conditions, which corresponds to a lower repetition factor for the first message.
[0117] In certain implementations, where DCI indicates a specific repetition factor, each code point or state can correspond to a repetition factor or an index of a repetition factor. For example, the repetition factor can be defined with alternative values such as 1, 2, 4, and 8. In DCI, where 2 bits or 4 code points or states (e.g., 00, 01, 10, 11) are used to indicate the repetition factor, the four code points can correspond to repetition factors 1, 2, 4, and 8, respectively. In certain implementations, four code points can correspond to the first, second, third, and fourth repetition factors configured or indicated by the network or predefined.
[0118] Configuration 2: Repetition Capability Report or Request for Repetition for the First Message.
[0119] In certain implementations, where the UEs may not have repetition capability of the first message, the UE is to send / transmit a capability report or request for repetition to the network, which can refer to at least one of the following methods:
[0120] 1) If the UE sends / transmits / provides a repetition capability report or repetition request for the second message, the UE can reuse the repetition capability report or repetition request as the repetition capability report or repetition request for the first message. For example, when the UE sends / transmits a repetition capability report or repetition request for the second message, the UE can determine that the transmission may also be applicable to the first message.
[0121] 2) The UE can send / transmit a repetition capability report or repetition request (sometimes referred to as a “request” ) for the first message.
[0122] In certain implementations, the UE can send / transmit a repetition capability report or repetition request for the first message via at least one of the following:
[0123] Msg1 message (e.g., specific preamble, specific RO resource) ;
[0124] High layer signaling (e.g., LCID codepoints, or reserved bits in the MAC subheader) or physical signaling (specific DMRS ports, or scramble the CRC of the Msg3 message with specific values of TC-RNTI) in Msg3 message; or PUCCH (e.g., specific PUCCH DMRS pattern, or PUCCH content except for HARQ-ACK feedback) for Msg4 message HARQ-ACK.
[0125] Configuration 3: Conditions.
[0126] 1. Condition of repetition capability report or repetition request for the first message.
[0127] In configuration 2, the method of repetition capability report or repetition request (e.g., a request transmitted by the UE to the base station to indicate that the UE requests communication of the first message with repetition) for the first message can be defined, but whether the UE sends / transmits the repetition capability report or repetition request for the first message or reuses the repetition capability report or repetition request for the second message is to meet / satisfy at least one of the following conditions:
[0128] when one or more repetition factor (s) are configured, the repetition factor (s) can be configured for the first message or the second message;
[0129] when one or more repetition scaling factor (s) are configured, the repetition scaling factor (s) can be configured for the first message or the second message;
[0130] when the measured / determined threshold is lower than the first threshold configured or indicated by the high layer signaling, the first threshold can also be interpreted as a threshold configured or indicated by the network side for the UE to determine whether to send a repetition capability report or repetition request for the first message;
[0131] when the network enables the repetition of the second message or the second message is repeated transmission using the repetition factor; or
[0132] when the first message repetition is enabled via high layer signaling or DCI signaling.
[0133] In certain implementations, when the UE repetition capability report or repetition request for the second message and the threshold measured / determined by the UE is lower than the threshold configured or indicated by the high layer signaling, the UE can determine that a requestor capability reporting or repetition request has been sent / transmitted for the first message.
[0134] 2. Condition of determining repetition factor (s) or repetition scaling factor (s) .
[0135] In configuration 1, a method for configuring or indicating one or more repetition factors or scaling factors is defined. Furthermore, when configuring or indicating multiple repetition factors or scaling factors, DCI signaling (e.g., the first DCI, the second DCI) can be used to indicate specific repetition factors or scaling factors.
[0136] 1) For the configuration or indication of one or more repetition factors or scaling factors, or indication of specific repetition factors or scaling factors through DCI signaling, the UE is to satisfy at least one of the following conditions when determining the repetition factor or scaling factor of the first messages:
[0137] when the measured / determined threshold is lower than the first threshold configured or indicated by the high layer signaling, the first threshold can also be interpreted as a threshold configured or indicated by the network side for the UE to determine whether to reuse existing fields in DCI as repetition factors indication;
[0138] when the UE sends / transmits a capability report or a request for repetition or provides the capability report or request for repetition;
[0139] when multiple repetition factors are configured or indicated;
[0140] when multiple scaling factors are configured or indicated;
[0141] when the network side enables the repetition of the second message or the second message is repeated transmission using the repetition factor; or
[0142] when the first message repetition is enabled via high layer signaling or ACI signaling.
[0143] Referring now to FIG. 5, which illustrates a flow diagram of a method 500 for coverage enhancement. The method 500 may be implemented using any of the components and devices detailed herein in conjunction with FIGS. 1–4. In an overview, the method 500 may include a wireless communication device determining a configuration for a first message (BLOCK 502) . The method 300 may include the wireless communication device communicating the first message according to the determined configuration with a wireless communication node (BLOCK 504) .
[0144] In certain implementations, a wireless communication device (e.g., UE) can determine a configuration for a first message (e.g., associated with random access process) (BLOCK 502) . The wireless communication device can communicate the first message according to the determined configuration with a wireless communication node (e.g., BS, gNB) (BLOCK 504) . In certain implementations, communicating the first message may include communicating, by wireless communication device with the wireless communication node, one or more repetitions or instances of the first message. In certain implementations, communicating the first message may include at least one of the following: receiving, by the wireless communication device from the wireless communication node, the first message; or transmitting, by the wireless communication device to the wireless communication node, the first message.
[0145] In certain implementations, the first message may include at least one of the following: a physical random access (RA) channel (PRACH) transmission (e.g., PRACH or RA preamble in 4 step random access, PRACH or RA preamble in 2 step RA (e.g., MsgA PRACH, MsgA preamble) ) , a RA response (RAR) message (e.g., RAR in 4 step RA, RAR or fallback RAR in 2 step RA (then the 2 step RA fallback to the 4 step RA if fallback RAR) ) , a physical downlink control channel (PDCCH) transmission or downlink control information (DCI) signaling (e.g., for scheduling RAR message or fallback RAR, scheduling contention resolution message (Msg4) , scheduling PUSCH transmission) , a Msg3 message (e.g., Msg3 in 4 step RA type, MsgB PUSCH in 2 step RA type) , a contention resolution message (e.g., Msg4 message, MsgB PDSCH in 2 step RA) , a physical uplink control channel (PUCCH) transmission for Msg4 hybrid automatic repeat request acknowledgement (HARQ-ACK) (or a physical uplink control channel (PUCCH) transmission for MsgB (PDSCH) hybrid automatic repeat request acknowledgement (HARQ-ACK) ) , a physical uplink shared channel (PUSCH) message (e.g., including RRC establishment completion message or recovery completion message) , or a message without a dedicated resource being configured.
[0146] In certain implementations, determining the configuration may include at least one of the following: receiving, by the wireless communication device from the wireless communication node, a first indication, where the first indication can indicate at least one repetition factor (e.g., at least one candidate for selection / use) for the first message; receiving, by the wireless communication device from the wireless communication node, a second indication to indicate at least one repetition factor (e.g., at least one candidate for selection / use) for a second message; receiving, by the wireless communication device from the wireless communication node, a third indication to indicate at least one repetition scaling factor (e.g., at least one candidate for selection / use) for the first message; receiving, by the wireless communication device from the wireless communication node, a fourth indication to indicate at least one repetition scaling factor (e.g., at least one candidate for selection / use) for the second message; receiving, by the wireless communication device from the wireless communication node, at least one parameter (e.g., MCS, TB scaling, time-domain resource allocation, frequency-domain resource allocation, period, power) for the first message; receiving, by the wireless communication device from the wireless communication node, at least one parameter for the second message; receiving, by the wireless communication device from the wireless communication node, a fifth indication to indicate a specific repetition factor for the first message (e.g., indicate a specific repetition factor for the first message, from at least one repetition factor) ; receiving, by the wireless communication device from the wireless communication node, a sixth indication to indicate a specific repetition factor for the second message (e.g., indicate a specific repetition factor for the second message, from at least one repetition factor) ; receiving, by the wireless communication device from the wireless communication node, a seventh indication to indicate a specific repetition scaling factor for the first message (e.g., indicate a specific repetition scaling factor for the first message, from at least one repetition scaling factor) ; receiving, by the wireless communication device from the wireless communication node, an eighth indication to indicate a specific repetition scaling factor for the second message (e.g., indicate a specific repetition scaling factor for the second message, from at least one repetition scaling factor) ; receiving, by the wireless communication device from the wireless communication node, a ninth indication to indicate whether the repetition of the first message is enabled or disabled; receiving, by the wireless communication device from the wireless communication node, a tenth indication to indicate whether the repetition of the second message is enabled or disabled; receiving, by the wireless communication device from the wireless communication node, at least one first threshold for the first message; receiving, by the wireless communication device from the wireless communication node, at least one second threshold for the first message; receiving, by the wireless communication device from the wireless communication node, at least one first threshold offset for the first message; receiving, by the wireless communication device from the wireless communication node, at least one first threshold scaling factor for the first message; receiving, by the wireless communication device from the wireless communication node, at least one third threshold for the second message; receiving, by the wireless communication device from the wireless communication node, at least one fourth threshold for the second message; receiving, by the wireless communication device from the wireless communication node, at least one second threshold offset for the second message; or receiving, by the wireless communication device from the wireless communication node, at least one second threshold scaling factor for the second message.
[0147] In certain implementations, the second message may include at least one of the following: a physical random access (RA) channel (PRACH) transmission (e.g., PRACH or RA preamble in 4 step random access, PRACH or RA preamble in 2 step RA (e.g., MsgA PRACH, MsgA preamble) ) , a RA response (RAR) message (e.g., RAR in 4 step RA, RAR or fallback RAR in 2 step RA (then the 2 step RA fallback to the 4 step RA if fallback RAR) , a physical downlink control channel (PDCCH) transmission or downlink control information (DCI) (e.g., for scheduling RAR message or fallback RAR, scheduling contention resolution message (Msg4) , scheduling PUSCH transmission) , a Msg3 message (e.g., Msg3 in 4 step RA type, MsgB PUSCH in 2 step RA type) , a contention resolution message (e.g., Msg4 message, MsgB PDSCH in 2 step RA) , a physical uplink control channel (PUCCH) transmission for Msg4 hybrid automatic repeat request acknowledgement (HARQ-ACK) (or a physical uplink control channel (PUCCH) transmission for MsgB (PDSCH) hybrid automatic repeat request acknowledgement (HARQ-ACK) , a physical uplink shared channel (PUSCH) message (e.g., including RRC establishment completion message or recovery completion message) , or a message without a dedicated resource being configured.
[0148] In certain implementations, the configuration may include at least one of the following: one of at least one configuration configured or indicated by the wireless communication node to the wireless communication device via at least one of the following: a radio resource control (RRC) signaling, a medium access control control element (MAC CE) signaling, a system information block (SIB) signaling, another high layer signaling, a downlink control information (DCI) signaling, or a random access response (RAR) message.
[0149] In certain implementations, the wireless communication device can report (e.g., as a request or suggestion or recommendation) at least one of the following to the wireless communication node: at least one repetition factor or at least one repetition scaling factor. In certain implementations, the wireless communication device can determine at least one repetition factor (e.g., the same as or derived using that indicated in the second indication) for the second message according to the second indication of the at least one repetition factor. The wireless communication device can determine a repetition factor (e.g., the same as or derived using that indicated in the sixth indication) for the second message according to the sixth indication of the specific repetition factor. The wireless communication device can determine at least one repetition factor for the second message according to the at least one reported repetition factor. The wireless communication device can determine a repetition factor for the second message to be at least one of the following: a repetition factor which is adjusted by the at least one repetition scaling factor for the second message; a repetition factor which is adjusted by the specific repetition scaling factor for the second message; or a repetition factor which is adjusted by the at least one reported repetition scaling factor for the second message. The wireless communication device can determine a threshold for the second message according to the at least one third threshold. The wireless communication device can determine a threshold for the second message according to the at least one fourth threshold. The wireless communication device can determine a threshold for the second message to be at least one of the following: same as a threshold for the second message which is adjusted by the at least one second threshold offset for the second message; or same as a threshold for the second message which is adjusted by the at least one second threshold scaling factor for the second message.
[0150] In certain implementations, the wireless communication device can determine at least one repetition factor for the first message according to the first indication of the at least one repetition factor. The wireless communication device can determine a repetition factor for the first message according to the fifth indication of the specific repetition factor. The wireless communication device can determine at least one repetition factor for the first message according to the at least one reported repetition factor. The wireless communication device can determine a repetition factor for the first message to be at least one of the following: same as a repetition factor for the second message; same as a repetition factor for the second message after adjustment by the at least one repetition scaling factor for the first message; same as a repetition factor for the second message after adjustment by the specific repetition scaling factor for the first message; or same as a repetition factor for the second message after adjustment by the at least one reported repetition scaling factor for the first message. The wireless communication device can determine a threshold for the first message according to the at least one first threshold. The wireless communication device can determine a threshold for the first message according to the at least one second threshold. The wireless communication device can determine a threshold for the first message to be at least one of the following: same as the threshold for the second message; same as a threshold for the second message after adjustment by the at least one first threshold offset for the first message; or same as a threshold for the second message after adjustment by the at least one first threshold scaling factor for the first message .
[0151] In certain implementations, at least one of the fifth indication, the sixth indication, the seventh indication, the eighth indication, the ninth indication, or the tenth indication can be provided via a defined field or at least one cyclic redundancy code (CRC) bit for scrambling of the DCI signaling for scheduling the first message or the second message. In certain implementations, the defined field in the DCI signaling may include at least one of the following: resource allocation type, nominal resource block groups (RBG) size, vrb-ToPRB-Interleaver, or VRB-to-PRB mapping, carrier indicator, or bandwidth part (BWP) indicator, frequency domain resource assignment, time domain resource assignment, physical resource block (PRB) bundling size indicator, rate matching indicator, zero power (ZP) channel state information reference signal (CSI-RS) trigger, modulation and coding scheme (MCS) , new data indicator, redundancy version (RV) , hybrid automatic repeat request (HARQ) process number, downlink assignment index, transmission power control (TPC) command for scheduled PUCCH, second TPC command for scheduled PUCCH, PUCCH resource indicator, PDSCH-to-HARQ_feedback timing indicator, one-shot HARQ acknowledgement (HARQ-ACK) request, enhanced type 3 codebook indicator, PDSCH group index, new feedback indicator, number of requested PDSCH group (s) , HARQ-ACK retransmission indicator, antenna port (s) , transmission configuration indication, sounding reference signal (SRS) request, SRS offset indicator, code block group (CBG) transmission information (CBGTI) , CBG flushing out information (CBGFI) , demodulation reference signal (DMRS) sequence initialization, priority indicator, ChannelAccess-CPext, minimum applicable scheduling offset indicator, secondary cell (SCell) dormancy indication, PDCCH monitoring adaptation indication, PUCCH cell indicator, uplink (UL) or secondary UL (UL / SUL) indicator, frequency hopping flag, TPC command for scheduled PUSCH, second TPC command for scheduled PUSCH, SRS resource set indicator, SRS resource indicator, second SRS resource indicator, precoding information and number of layers, or second precoding information.
[0152] In certain implementations, a specific value or state in the fifth indication can be mapped to the specific repetition factor for the first message. A specific value or state in the sixth indication can be mapped to the specific repetition factor for the second message. A specific value or state in the seventh indication can be mapped to the specific repetition scaling factor for calculating a repetition factor for the first message. A specific value or state in the eighth indication can be mapped to the specific repetition scaling factor for calculating a repetition factor for the second message. A specific value or state in the ninth indication can be mapped to enabled or disabled repetitions for the first message. A specific value or state in the tenth indication can be mapped to enabled or disabled repetitions for the second message.
[0153] In certain implementations, the wireless communication device can determine a repetition factor for the first message according to the at least one parameter of the first message or the second message. At least one parameter may include at least one of a modulation and coding scheme, transport block (TB) scaling information, time-domain resource allocation information, frequency-domain resource allocation information, a time period or periodicity, or power information. Each value of one of the at least one parameter can correspond to a respective repetition factor for the first message. In certain implementations, the wireless communication device can transmit a message to the wireless communication node. The message may include at least one of the following: a capability report, or a request, for at least one of the following: the first message to be communicated with repetition, or the second message to be communicated with repetition. In certain implementations, a capability report or a request for the first message can be the same as a capability report or a request for the second message.
[0154] In certain implementations, the message can be transmitted via at least one of the following: at least one specific RA preamble; an RA preamble transmitted on a specific RA occasion (RO) (e.g., at least one specific RA occasion) ; a Msg3 message; or a physical uplink control channel (PUCCH) transmission for Msg4 HARQ-ACK, which can be via a specific PUCCH DMRS pattern or PUCCH content. In certain implementations, the Msg3 message to use to convey the message may include at least one of the following: a high layer signaling; at least one logical channel identifier (LCID) of a medium access control (MAC) subheader of the Msg3 message; at least one bit in a MAC subheader of the Msg3 message; a physical signaling; at least one specific demodulation reference signal (DMRS) ports; or scrambling of cyclic redundancy check (CRC) of the Msg3 message with a specific value of temporary cell radio network temporary identifier (TC-RNTI) . In certain implementations, the Msg3 message may include a second message transmitted on an uplink shared channel (UL-SCH) that includes at least one of the following: a cell radio network temporary identifier (C-RNTI) , a media access control control element (MAC CE) , or a common control channel (CCCH) service data unit (SDU) , from upper layer and associated with a user equipment (UE) contention resolution identity, as part of a random access procedure.
[0155] In certain implementations, the wireless communication device can determine to transmit the message, or that a capability report or a request for the first message can be the same as a capability report or a request for the second message, when (e.g., in response to, or upon occurrence of the following condition (s) ) at least one of the following conditions is satisfied: one or more repetition factors are configured for the first message or the second message; one or more repetition scaling factors are configured for the first message or the second message; a measured reference signal received power (RSRP) is lower than a first threshold configured by a high layer signaling; a measured signal state of a downlink signal is lower than a second threshold configured by a high layer signaling; a measured reference signal received power (RSRP) is lower than a third threshold configured by a high layer signaling; a measured signal state of a downlink signal is lower than a fourth threshold configured by a high layer signaling; repetition of the second message is enabled via high layer signaling or a DCI signaling, or the second message is transmitted with repetition using a specific repetition factor; or repetition of the first message is enabled via high layer signaling or a DCI signaling.
[0156] In certain implementations, the wireless communication device can determine (e.g., where a DCI signaling is used to indicate from a plurality of candidate repetition factors and / or repetition scaling factors) to determine at least one of the fifth indication, the sixth indication, the seventh indication, the eighth indication, the ninth indication, or the tenth indication according to the defined field or the at least one CRC bit, when (e.g., in response to, or upon occurrence of the following condition (s) ) at least one of the following conditions is satisfied: an RSRP is lower than a first threshold configured or indicated by a high layer signaling; a measured signal state of a downlink signal is lower than a second threshold configured by a high layer signaling; a measured reference signal received power (RSRP) is lower than a third threshold configured by a high layer signaling; a measured signal state of a downlink signal is lower than a fourth threshold configured by a high layer signaling; the wireless communication device sends or provides a capability report or a repetition request; at least one repetition factor is configured or indicated; a plurality of repetition factors are configured or indicated; at least one repetition scaling factor is configured or indicated; a plurality of repetition scaling factors are configured or indicated; the wireless communication device is capable of communicating the first message with repetition but may not have transmitted at least one of the request or the capability report for communicating first message with repetition; the wireless communication device is capable of communicating the second message with repetition but may not have transmitted at least one of the request or the capability report for communicating the second message with repetition; repetition of the second message is enabled via high layer signaling or a DCI signaling, or the second message is transmitted with repetition using a repetition factor; or repetition of the first message is enabled via high layer signaling or a DCI signaling.
[0157] In certain implementations, a wireless communication node can communicate a first message according to a configuration with a wireless communication device. The configuration for the first message can be determined by the wireless communication device.
[0158] It should be understood that one or more features from the above implementations / examples / embodiments are not exclusive to the specific implementations / examples / embodiments, but can be combined in any manner (e.g., in any priority and / or order, concurrently or otherwise) .
[0159] While various embodiments of the present solution have been described above, it should be understood that they have been presented by way of example only, and not by way of limitation. Likewise, the various diagrams may depict an example architectural or configuration, which are provided to enable persons of ordinary skill in the art to understand example features and functions of the present solution. Such persons would understand, however, that the solution is not restricted to the illustrated example architectures or configurations, but can be implemented using a variety of alternative architectures and configurations. Additionally, as would be understood by persons of ordinary skill in the art, one or more features of one embodiment can be combined with one or more features of another embodiment described herein. Thus, the breadth and scope of the present disclosure should not be limited by any of the above-described illustrative embodiments.
[0160] It is also understood that any reference to an element herein using a designation such as “first, ” “second, ” and so forth does not generally limit the quantity or order of those elements. Rather, these designations can be used herein as a convenient means of distinguishing between two or more elements or instances of an element. Thus, a reference to first and second elements does not mean that only two elements can be employed, or that the first element must precede the second element in some manner.
[0161] Additionally, a person having ordinary skill in the art would understand that information and signals can be represented using any of a variety of different technologies and techniques. For example, data, instructions, commands, information, signals, bits and symbols, for example, which may be referenced in the above description can be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.
[0162] A person of ordinary skill in the art would further appreciate that any of the various illustrative logical blocks, modules, processors, means, circuits, methods and functions described in connection with the aspects disclosed herein can be implemented by electronic hardware (e.g., a digital implementation, an analog implementation, or a combination of the two) , firmware, various forms of program or design code incorporating instructions (which can be referred to herein, for convenience, as “software” or a “software module) , or any combination of these techniques. To clearly illustrate this interchangeability of hardware, firmware and software, various illustrative components, blocks, modules, circuits, and steps have been described above generally in terms of their functionality. Whether such functionality is implemented as hardware, firmware or software, or a combination of these techniques, depends upon the particular application and design constraints imposed on the overall system. Skilled artisans can implement the described functionality in various ways for each particular application, but such implementation decisions do not cause a departure from the scope of the present disclosure.
[0163] Furthermore, a person of ordinary skill in the art would understand that various illustrative logical blocks, modules, devices, components and circuits described herein can be implemented within or performed by an integrated circuit (IC) that can include a general purpose processor, a digital signal processor (DSP) , an application specific integrated circuit (ASIC) , a field programmable gate array (FPGA) or other programmable logic device, or any combination thereof. The logical blocks, modules, and circuits can further include antennas and / or transceivers to communicate with various components within the network or within the device. A general purpose processor can be a microprocessor, but in the alternative, the processor can be any conventional processor, controller, or state machine. A processor can also be implemented as a combination of computing devices, e.g., a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, or any other suitable configuration to perform the functions described herein.
[0164] If implemented in software, the functions can be stored as one or more instructions or code on a computer-readable medium. Thus, the steps of a method or algorithm disclosed herein can be implemented as software stored on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that can be enabled to transfer a computer program or code from one place to another. A storage media can be any available media that can be accessed by a computer. By way of example, and not limitation, such computer-readable media can include RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to store desired program code in the form of instructions or data structures and that can be accessed by a computer.
[0165] In this document, the term “module” as used herein, refers to software, firmware, hardware, and any combination of these elements for performing the associated functions described herein. Additionally, for purpose of discussion, the various modules are described as discrete modules; however, as would be apparent to one of ordinary skill in the art, two or more modules may be combined to form a single module that performs the associated functions according embodiments of the present solution.
[0166] Additionally, memory or other storage, as well as communication components, may be employed in embodiments of the present solution. It will be appreciated that, for clarity purposes, the above description has described embodiments of the present solution with reference to different functional units and processors. However, it will be apparent that any suitable distribution of functionality between different functional units, processing logic elements or domains may be used without detracting from the present solution. For example, functionality illustrated to be performed by separate processing logic elements, or controllers, may be performed by the same processing logic element, or controller. Hence, references to specific functional units are only references to a suitable means for providing the described functionality, rather than indicative of a strict logical or physical structure or organization.
[0167] Various modifications to the embodiments described in this disclosure will be readily apparent to those skilled in the art, and the general principles defined herein can be applied to other embodiments without departing from the scope of this disclosure. Thus, the disclosure is not intended to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the novel features and principles disclosed herein, as recited in the claims below.
Claims
1.A method comprising:determining, by a wireless communication device, a configuration for a first message; andcommunicating, by the wireless communication device with a wireless communication node, the first message according to the determined configuration.2.The method of claim 1, wherein communicating the first message comprises:communicating, by wireless communication device with the wireless communication node, one or more repetitions or instances of the first message.3.The method of claim 1 or 2, wherein communicating the first message comprises at least one of:receiving, by the wireless communication device from the wireless communication node, the first message; ortransmitting, by the wireless communication device to the wireless communication node, the first message.4.The method of any one of claims 1–3, wherein the first message comprises at least one of:a physical random access (RA) channel (PRACH) transmission, a RA response (RAR) message, a physical downlink control channel (PDCCH) transmission or downlink control information (DCI) signaling, a Msg3 message, a contention resolution message, a physical uplink control channel (PUCCH) transmission for Msg4 hybrid automatic repeat request acknowledgement (HARQ-ACK) , a physical uplink shared channel (PUSCH) message, or a message without a dedicated resource being configured.5.The method of any one of claims 1–4, wherein determining the configuration comprises at least one of:receiving, by the wireless communication device from the wireless communication node, a first indication, wherein the first indication indicates at least one repetition factor for the first message;receiving, by the wireless communication device from the wireless communication node, a second indication to indicate at least one repetition factor for a second message;receiving, by the wireless communication device from the wireless communication node, a third indication to indicate at least one repetition scaling factor for the first message;receiving, by the wireless communication device from the wireless communication node, a fourth indication to indicate at least one repetition scaling factor for the second message;receiving, by the wireless communication device from the wireless communication node, at least one parameter for the first message;receiving, by the wireless communication device from the wireless communication node, at least one parameter for the second message;receiving, by the wireless communication device from the wireless communication node, a fifth indication to indicate a specific repetition factor for the first message;receiving, by the wireless communication device from the wireless communication node, a sixth indication to indicate a specific repetition factor for the second message; orreceiving, by the wireless communication device from the wireless communication node, a seventh indication to indicate a specific repetition scaling factor for the first message;receiving, by the wireless communication device from the wireless communication node, an eighth indication to indicate a specific repetition scaling factor for the second message;receiving, by the wireless communication device from the wireless communication node, a ninth indication to indicate whether the repetition of the first message is enabled or disabled; orreceiving, by the wireless communication device from the wireless communication node, a tenth indication to indicate whether the repetition of the second message is enabled or disabled.6.The method of claim 5, wherein the second message comprises at least one of:a physical random access (RA) channel (PRACH) transmission, a RA response (RAR) message, a physical downlink control channel (PDCCH) transmission or downlink control information (DCI) , a Msg3 message, a contention resolution message, a physical uplink control channel (PUCCH) transmission for Msg4 hybrid automatic repeat request acknowledgement (HARQ-ACK) , a physical uplink shared channel (PUSCH) message, or a message without a dedicated resource being configured.7.The method of any one of claims 1–4, wherein the configuration comprises at least one of:one of at least one configuration configured or indicated by the wireless communication node to the wireless communication device via at least one of:a radio resource control (RRC) signaling, a medium access control control element (MAC CE) signaling, a system information block (SIB) signaling, another high layer signaling, a downlink control information (DCI) signaling, or a random access response (RAR) message.8.The method of claim 5, comprising:reporting, by the wireless communication device to the wireless communication node, at least one of: at least one repetition factor or at least one repetition scaling factor.9.The method of claim 5 or 8, comprising at least one of:determining, by the wireless communication device, at least one repetition factor for the second message, according to the second indication of the at least one repetition factor;determining, by the wireless communication device, a repetition factor for the second message, according to the sixth indication of the specific repetition factor;determining, by the wireless communication device, at least one repetition factor for the second message, according to the at least one reported repetition factor; ordetermining, by the wireless communication device, a repetition factor for the second message to be at least one of:a repetition factor which is adjusted by the at least one repetition scaling factor for the second message;a repetition factor which is adjusted by the specific repetition scaling factor for the second message; ora repetition factor which is adjusted by the at least one reported repetition scaling factor for the second message.10.The method of claim 5 or 8, comprising at least one of:determining, by the wireless communication device, at least one repetition factor for the first message, according to the first indication of the at least one repetition factor;determining, by the wireless communication device, a repetition factor for the first message , according to the fifth indication of the specific repetition factor;determining, by the wireless communication device, at least one repetition factor for the first message, according to the at least one reported repetition factor; ordetermining, by the wireless communication device, a repetition factor for the first message to be at least one of:same as a repetition factor for the second message;same as a repetition factor for the second message after adjustment by the at least one repetition scaling factor for the first message;same as a repetition factor for the second message after adjustment by the specific repetition scaling factor for the first message; orsame as a repetition factor for the second message after adjustment by the at least one reported repetition scaling factor for the first message.11.The method of claim 5, wherein at least one of: the fifth indication, the sixth indication, the seventh indication, the eighth indication, the ninth indication, or the tenth indication, is provided via: a defined field, or at least one cyclic redundancy code (CRC) bit for scrambling of the DCI signaling for scheduling the first message or the second message.12.The method of claim 11, wherein the defined field in the DCI signaling comprises at least one of: resource allocation type, nominal resource block groups (RBG) size, vrb-ToPRB-Interleaver, or VRB-to-PRB mapping, carrier indicator, or bandwidth part (BWP) indicator, frequency domain resource assignment, time domain resource assignment, physical resource block (PRB) bundling size indicator, rate matching indicator, zero power (ZP) channel state information reference signal (CSI-RS) trigger, modulation and coding scheme (MCS) , new data indicator, redundancy version (RV) , hybrid automatic repeat request (HARQ) process number, downlink assignment index, transmission power control (TPC) command for scheduled PUCCH, second TPC command for scheduled PUCCH, PUCCH resource indicator, PDSCH-to-HARQ_feedback timing indicator, one-shot HARQ acknowledgement (HARQ-ACK) request, enhanced type 3 codebook indicator, PDSCH group index, new feedback indicator, number of requested PDSCH group (s) , HARQ-ACK retransmission indicator, antenna port (s) , transmission configuration indication, sounding reference signal (SRS) request, SRS offset indicator, code block group (CBG) transmission information (CBGTI) , CBG flushing out information (CBGFI) , demodulation reference signal (DMRS) sequence initialization, priority indicator, ChannelAccess-CPext, minimum applicable scheduling offset indicator, secondary cell (SCell) dormancy indication, PDCCH monitoring adaptation indication, PUCCH cell indicator, uplink (UL) or secondary UL (UL / SUL) indicator, frequency hopping flag, TPC command for scheduled PUSCH, second TPC command for scheduled PUSCH, SRS resource set indicator, SRS resource indicator, second SRS resource indicator, precoding information and number of layers, or second precoding information.13.The method of claim 5, wherein at least one of:a specific value or state in the fifth indication is mapped to the specific repetition factor for the first message;a specific value or state in the sixth indication is mapped to the specific repetition factor for the second message;a specific value or state in the seventh indication is mapped to the specific repetition scaling factor for calculating a repetition factor for the first message;a specific value or state in the eighth indication is mapped to the specific repetition scaling factor for calculating a repetition factor for the second message;a specific value or state in the ninth indication is mapped to enabled or disabled repetitions for the first message; ora specific value or state in the tenth indication is mapped to enabled or disabled repetitions for the second message.14.The method of claim 5, comprising:determining, by the wireless communication device, a repetition factor for the first message, according to the at least one parameter of the first message or the second message,wherein at least one of:the at least one parameter comprises at least one of a modulation and coding scheme, transport block (TB) scaling information, time-domain resource allocation information, frequency-domain resource allocation information, a time period or periodicity, or power information; oreach value of one of the at least one parameter corresponds to a respective repetition factor for the first message.15.The method of any one of claims 1–4, comprising:transmitting, by the wireless communication device to the wireless communication node, a message comprising at least one of:a capability report, ora request, for at least one of:(i) the first message to be communicated with repetition, or(ii) the second message to be communicated with repetition.16.The method of claims 15, wherein:a capability report or a request for the first message is same as a capability report or a request for the second message.17.The method of claim 15, wherein the message is transmitted via at least one of:at least one specific RA preamble;a RA preamble transmitted on a specific RA occasion (RO) ;a Msg3 message; ora physical uplink control channel (PUCCH) transmission for Msg4 HARQ-ACK, which can be via a specific PUCCH DMRS pattern or PUCCH content.18.The method of claim 17, wherein the Msg3 message comprises at least one of:a high layer signaling;at least one logical channel identifier (LCID) of a medium access control (MAC) subheader of the Msg3 message;at least one bit in a MAC subheader of the Msg3 message;a physical signaling;at least one specific demodulation reference signal (DMRS) ports; orscrambling of cyclic redundancy check (CRC) of the Msg3 message with specific value of temporary cell radio network temporary identifier (TC-RNTI) .19.The method of claim 6, wherein the Msg3 message comprises a message transmitted on an uplink shared channel (UL-SCH) that includes at least one of: a cell radio network temporary identifier (C-RNTI) , a media access control control element (MAC CE) or a common control channel (CCCH) service date unit (SDU) , from upper layer and associated with a user equipment (UE) contention resolution identity, as part of a random access procedure.20.The method of claim 15 or 16, comprising:determining, by the wireless communication device, to transmit the message, or that a capability report or a request for the first message is same as a capability report or a request for the second message, when at least one of following conditions is satisfied:one or more repetition factors are configured for the first message or the second message;one or more repetition scaling factor are configured for the first message or the second message;a measured reference signal received power (RSRP) is lower than a first threshold configured by a high layer signaling;a measured signal state of a downlink signal is lower than a second threshold configured by a high layer signaling;a measured reference signal received power (RSRP) is lower than a third threshold configured by a high layer signaling;a measured signal state of a downlink signal is lower than a fourth threshold configured by a high layer signaling;repetition of the second message is enabled via high layer signaling or a DCI signaling, or the second message is transmitted with repetition using a specific repetition factor; orrepetition of the first message is enabled via high layer signaling or a DCI signaling.21.The method of claim 11, comprising:determining, by the wireless communication device, to determine at least one of the fifth indication, the sixth indication, the seventh indication, the eighth indication, the ninth indication, or the tenth indication according to the defined field or the at least one CRC bit, when at least one of following conditions is satisfied:a RSRP is lower than a first threshold configured or indicated by a high layer signaling;a measured signal state of a downlink signal is lower than a second threshold configured by a high layer signaling;a measured reference signal received power (RSRP) is lower than a third threshold configured by a high layer signaling;a measured signal state of a downlink signal is lower than a fourth threshold configured by a high layer signaling;the wireless communication device sends or provides a capability report or a repetition request;at least one repetition factor is configured or indicated;a plurality of repetition factors are configured or indicated;at least one repetition scaling factor is configured or indicated;a plurality of repetition scaling factors are configured or indicated;the wireless communication device is capable of communicating the first message with repetition but may not have transmitted at least one of the request or the capability report for communicating first message with repetition;the wireless communication device is capable of communicating the second message with repetition but may not have transmitted at least one of the request or the capability report for communicating the second message with repetition;repetition of the second message is enabled via high layer signaling or a DCI signaling, or the second message is transmitted with repetition using a repetition factor; orrepetition of the first message is enabled via high layer signaling or a DCI signaling.22.A method comprising:communicating, by a wireless communication node with a wireless communication device, a first message according to a configuration,wherein the configuration for the first message is determined by the wireless communication device.23.A non-transitory computer readable medium storing instructions, which when executed by at least one processor, cause the at least one processor to perform the method of any one of claims 1–22.24.An apparatus comprising:at least one processor configured to perform the method of any one of claims 1–22.