Method and apparatus for reconfiguration signaling for semi-persistent scheduling

Abstract

The present disclosure provides a method and apparatus for reconfiguration signaling for semi-persistent scheduling. It is determined at a base station that at least one parameter associated with semi-persistent scheduling (SPS) of traffic of one or more user equipments (UEs) is to be modified. A reconfiguration control message is generated to be transmitted to the one or more UEs to signal the modification of the at least one parameter. The reconfiguration control message is one of a reconfigured DCI that modifies activation downlink control information (DCI) or a format redesigned for DCI or MAC‑CE. The reconfiguration control message is transmitted to the one or more UEs.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims the benefit of U.S. Provisional Application No. 62 / 843,272, filed on May 3, 2019, entitled “Reconfiguration Signaling of Semi-Persistent RX / TX,” and U.S. Patent Application No. 16 / 865,048, filed on May 1, 2020, entitled “Reconfiguration Signaling of Semi-Persistent Scheduling,” which are expressly incorporated herein by reference in their entirety.

[0003] background Technical Field

[0004] The present disclosure relates generally to communication systems, and more particularly to reconfiguration signaling of semi-persistent scheduling (SPS) in wireless communication systems.

[0005] introduction

[0006] Wireless communication systems are widely deployed to provide various telecommunication services such as telephony, video, data, messaging, and broadcast. Typical wireless communication systems may employ multiple access technologies capable of supporting communication with multiple users by sharing available system resources. Examples of such multiple access technologies include code division multiple access (CDMA) systems, time division multiple access (TDMA) systems, frequency division multiple access (FDMA) systems, orthogonal frequency division multiple access (OFDMA) systems, single carrier frequency division multiple access (SC-FDMA) systems, and time division synchronous code division multiple access (TD-SCDMA) systems.

[0007] These multiple access technologies have been adopted in various telecommunication standards to provide common protocols that enable different wireless devices to communicate at city, country, region, and even global levels. An example telecommunication standard is 5G New Radio (NR). 5G NR is a part of the continuous mobile broadband evolution promulgated by the Third Generation Partnership Project (3GPP) to meet new requirements associated with latency, reliability, security, scalability (e.g., with the Internet of Things (IoT)) and other requirements. 5GNR includes services associated with enhanced mobile broadband (eMBB), massive machine type communication (mMTC), and ultra-reliable low latency communication (URLLC). Some aspects of 5G NR can be based on 4G Long Term Evolution (LTE) standards. However, there is still a need for further improvement of 5G NR technology. These improvements can also be applied to other multiple access technologies and telecommunication standards that adopt these technologies.

[0008] Overview

[0009] The following is a simplified summary of one or more aspects to provide a basic understanding of such aspects. This summary is not an exhaustive overview of all conceived aspects, and is neither intended to identify the key or critical elements of all aspects nor to define the scope of any or all aspects. Its sole purpose is to present some concepts of one or more aspects in a simplified form as a prelude to a more detailed description that is presented later.

[0010] In one aspect, the present disclosure provides a wireless communication method for user equipment. The method may include: determining at a base station to modify at least one parameter associated with semi-persistent scheduling (SPS) of traffic for one or more user equipment (UE); generating a reconfiguration control message for transmitting to the one or more UEs to signal the modification of the at least one parameter, wherein the reconfiguration control message is one of a reconfigured DCI or a redesigned DCI or MAC-CE format that modifies activation downlink control information (DCI); and transmitting the reconfiguration control message to the one or more UEs.

[0011] In another aspect, the present disclosure provides an example apparatus for wireless communication. The apparatus may include a memory storing computer executable instructions and at least one processor coupled to the memory. The at least one processor may be configured to: determine at a base station to modify at least one parameter associated with the SPS of traffic for one or more UEs; generate a reconfiguration control message for transmitting to the one or more UEs to signal the modification of the at least one parameter, wherein the reconfiguration control message is one of a reconfigured DCI or a redesigned DCI or MAC-CE format that modifies the activation DCI; and transmit the reconfiguration control message to the one or more UEs.

[0012] In another aspect, the present disclosure provides an example device for wireless communication. The example device may include means for: determining at a base station to modify at least one parameter associated with SPS of traffic for one or more UEs; generating a reconfiguration control message for transmitting to the one or more UEs to signal the modification of the at least one parameter, wherein the reconfiguration control message is one of a reconfigured DCI or a redesigned DCI or MAC-CE format that modifies an activation DCI; and transmitting the reconfiguration control message to the one or more UEs.

[0013] In another aspect, the present disclosure provides a non-transitory computer-readable medium storing computer-executable code. The code, when executed by a processor, can cause the processor to: determine at a base station to modify at least one parameter associated with SPS of traffic for one or more UEs; generate a reconfiguration control message for transmitting to the one or more UEs to signal the modification of the at least one parameter, wherein the reconfiguration control message is one of a reconfigured DCI or a redesigned DCI or MAC-CE format that modifies an activation DCI; and transmit the reconfiguration control message to the one or more UEs.

[0014] To achieve the foregoing and related ends, the one or more aspects include the features fully described below and particularly pointed out in the claims. The following description and drawings set forth in detail certain illustrative features of the one or more aspects. However, these features are merely indicative of several of the various ways in which the principles of the various aspects may be employed, and this description is intended to cover all such aspects and their equivalents. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a diagram illustrating an example of a wireless communication system according to aspects of the present disclosure.

[0017] Figure 2 is an example flow chart of reconfiguring one or more parameters associated with SPS based on a reconfigured DCI / MAC-CE in accordance with various aspects of the present disclosure.

[0018] Figure 3 is a timing diagram for transmitting a reconfiguration DCI and activating reconfigured parameters during an SPS period in accordance with various aspects of the present disclosure.

[0019] Figure 4 is a conceptual diagram of reconfigurable parameters for SPS / CG, which allows the base station and UE to coordinate resource repetition and position offset in each transmission cycle.

[0020] Figure 5 is a flow chart of an example wireless communication method performed by a base station.

[0021] Figure 6 is a block diagram illustrating SPS management components of a base station according to an example of the techniques disclosed herein.

[0022] Figure 7 yes Figure 1 A schematic diagram of example components of a base station.

[0023] Figure 8 is a flow chart of an example wireless communication method performed by a UE.

[0024] Fig. 9is a block diagram illustrating UE SPS components of an example UE according to the techniques disclosed herein.

[0025] Fig.10 yes Figure 1 A schematic diagram of example components of a UE.

[0026] Detailed Description

[0027] The detailed description set forth below in conjunction with the accompanying drawings is intended as a description of various configurations and is not intended to represent the only configurations in which the concepts described herein may be practiced. This detailed description includes specific details to provide a thorough understanding of the various concepts. However, it will be apparent to those skilled in the art that these concepts may be practiced without these specific details. In some instances, well-known structures and components are shown in block diagram form to avoid obscuring such concepts.

[0028] Semi-persistent scheduling (SPS) can provide scheduling of periodic communications (e.g., uplink communications or downlink communications) of user equipment (UE). Specifically, in wireless communications, base stations can use various scheduling mechanisms to schedule UEs. As discussed above, one such mechanism is called SPS. When a base station uses SPS to schedule a UE, the base station can allocate resources once and let the UE use these resources instead of allocating these resources periodically. In other words, the base station can assign a predefined amount of resources to the UE at a certain periodicity. Therefore, there is no need for the UE to request resources during each transmission time interval (TTI), thereby saving control planning overhead at the base station. Thus, the base station can provide initial configuration information identifying the SPS configuration, and the UE can transmit or receive communications according to the SPS configuration. When scheduled semi-persistently, the UE may need to monitor the physical downlink control channel in each subframe because the base station may use downlink control information DCI ("activation DCI") to activate / reactivate / release SPS at any time.

[0029] In some aspects, the UE may receive control information that overrides the SPS configuration. For example, if the physical downlink control channel (PDCCH) schedules a PDSCH that at least partially overlaps with the SPS physical downlink shared channel (PDSCH), the beam of the SPS PDSCH may be overwritten by the beam used or indicated by the overriding PDCCH. For example, this may be useful when the scheduling entity determines that the updated beam configuration can provide improved performance for the reception of the SPS PDSCH. However, signaling the overriding PDCCH configuration for each opportunity of the SPS PDSCH can result in significant signaling overhead, thereby reducing the efficiency of resource allocation.

[0030] The UE may also receive information from the base station to reconfigure the SPS PDSCH transmission configuration indication (TCI) state. For example, the information may include a media access control (MAC) control element (CE), downlink control information (DCI), etc. The information may indicate the updated TCI state of the SPS communication. However, in some instances, the UE may not be able to immediately implement the updated TCI state (e.g., due to antenna limitations, RF chain limitations, etc.). If the TCI state is indicated without sufficient time to implement the TCI state, the reception performance of the corresponding PDSCH may be affected.

[0031] Some techniques and devices described herein provide dynamic reconfiguration of virtual search spaces. For example, a virtual search space and a corresponding virtual control resource set CORESET (e.g., including corresponding QCL parameters of the virtual CORESET) may be indicated using lower layer signaling than radio resource control (RRC), such as DCI or MAC-CE. Thus, the waiting time associated with the reconfiguration of the virtual search space and / or CORESET may be reduced by using lower layer signaling, thereby achieving improved performance of the UE in SPS communications. In some aspects, the above operations may be applied to non-persistent communications (e.g., dynamically scheduled communications, one-time communications, etc.).

[0032] By reconfiguring the DCI or MAC-CE, any parameters associated with SPS communication (e.g., downlink or uplink) may be reconfigured, including but not limited to beam indication, modulation and coding scheme (MCS), rank, precoding matrix index, allocated time / frequency resources, period, offset, etc. Various aspects of the present disclosure provide two techniques for modifying the format of the reconfigured DCI / MAC-CE. In a first example, various aspects of the present disclosure may reuse the existing SPS activation DCI format, which is slightly modified to signal to the UE that the base station has reconfigured one or more configuration parameters. In a second example, various aspects of the present disclosure introduce a new DCI / MAC-CE format for SPS reconfiguration, which has a fixed or dynamic definition for one or more fields, each of which may carry a reconfigured parameter value. In addition, the reconfigured parameters for SPS / CG may also include resource repetitions and position offsets in each cycle.

[0033] Several aspects of telecommunication systems will now be presented with reference to various apparatus and methods. These apparatus and methods will be described in the following detailed description and illustrated in the accompanying drawings by various blocks, components, circuits, processes, algorithms, etc. (collectively referred to as "elements"). These elements may be implemented using electronic hardware, computer software, or any combination thereof. Whether such elements are implemented as hardware or software depends on the specific application and the design constraints imposed on the overall system.

[0034] As an example, an element, or any part of an element, or any combination of elements may be implemented as a "processing system" including one or more processors. Examples of processors include: microprocessors, microcontrollers, graphics processing units (GPUs), central processing units (CPUs), application processors, digital signal processors (DSPs), reduced instruction set computing (RISC) processors, systems on chip (SoCs), baseband processors, field programmable gate arrays (FPGAs), programmable logic devices (PLDs), state machines, gating logic, discrete hardware circuits, and other suitable hardware configured to perform various functionalities described throughout this disclosure. One or more processors in a processing system may execute software. Software should be broadly interpreted as meaning instructions, instruction sets, codes, code segments, program codes, programs, subroutines, software components, applications, software applications, software packages, routines, subroutines, objects, executables, threads of execution, procedures, functions, etc., whether it is described in software, firmware, middleware, microcode, hardware description languages, or other terms.

[0035] Accordingly, in one or more examples, the functions described can be implemented in hardware, software, or any combination thereof. If implemented in software, each function can be stored or encoded as one or more instructions or codes on a computer-readable medium. Computer-readable media include computer storage media. Storage media can be any available media that can be accessed by a computer. As an example and not limitation, such computer-readable media may include random access memory (RAM), read-only memory (ROM), electrically erasable programmable ROM (EEPROM), optical disk storage, magnetic disk storage, other magnetic storage devices, a combination of computer-readable media of the above types, or any other medium that can be used to store computer-executable code in the form of instructions or data structures that can be accessed by a computer.

[0036] Figure 1 1 is a diagram illustrating an example of a wireless communication system and access network 100. The wireless communication system (also referred to as a wireless wide area network (WWAN)) includes a base station 102, a UE 104, an evolved packet core (EPC) 160, and another core network 190 (e.g., a 5G core (5GC)). The base station 102 may include a macro cell (a high-power cellular base station) and / or a small cell (a low-power cellular base station). A macro cell includes a base station. A small cell includes a femto cell, a pico cell, and a micro cell.

[0037] Base stations 102 configured for 4G LTE (collectively referred to as the Evolved Universal Mobile Telecommunications System (UMTS) Terrestrial Radio Access Network (E-UTRAN)) can interface with the EPC 160 via a backhaul link 132 (e.g., an S1 interface). The backhaul link 132 can be wired or wireless. Base stations 102 configured for 5G NR (collectively referred to as the Next Generation RAN (NG-RAN)) can interface with the core network 190 and / or the EPC 160 via backhaul links 132, 134, 184 (which can be wired or wireless). In one aspect, for example, an EN-DC configuration can utilize an LTE master cell group (MCG) and the EPC 160 to support communications between a UE 104 and a base station 102 configured for 5G NR. The base station configured for 5G NR can establish a backhaul link (e.g., an S1 bearer) directly with the serving gateway 166 of the EPC or via a master eNB (i.e., a base station configured for 4G LTE). Accordingly, even if 5GC is not deployed, UE 104 can establish a 5G NR connection with a 5G access network. Although the following description may focus on 5G NR and LTE, the concepts described herein may be applicable to other similar fields, such as LTE-A, CDMA, GSM, and other wireless technologies.

[0038] In some examples, the base station 102 may include an SPS management component 640 for scheduling one or more UEs for SPS so that the eNB can allocate resources once and let the UE use the allocated resources for downlink and uplink communications, without periodically allocating resources. In some examples, the SPS management component 640 may also be implemented to reconfigure the DCI / MAC-CE format according to the various aspects of the present disclosure discussed herein. In addition, the UE 104 may receive a DCI / MAC-CE message from the base station 102 and determine whether the received message is to activate DCI or reconfigure DCI, and configure the UE accordingly for SPS communication based on the determination. In some examples, the UE 104 may include a UE SPS component 910, which is used to: receive a command for activating SPS on the UE; operate the UE under the current SPS in the absence of new activation or reactivation; second receive a command for modifying without releasing the SPS in the operation; adjust the UE configuration in response to the received command for modification; and perform a second operation on the UE under the adjusted configuration. The UE SPS component 910 is described in more detail below.

[0039] The base station 102 may also perform one or more of the following functions, among other functions: delivery of user data, radio channel encryption and decryption, integrity protection, header compression, mobility control functions (e.g., handover, dual connectivity), inter-cell interference coordination, connection establishment and release, load balancing, distribution of non-access stratum (NAS) messages, NAS node selection, synchronization, radio access network (RAN) sharing, multimedia broadcast multicast service (MBMS), subscriber and equipment tracking, RAN information management (RIM), paging, positioning, and delivery of alert messages. The base stations 102 may communicate with each other directly or indirectly (e.g., through the EPC 160 or the core network 190) over a backhaul link 134 (e.g., an X2 interface). The backhaul link 134 may be wired or wireless.

[0040] Base stations 102 may communicate wirelessly with UE 104. Each base station 102 may provide communication coverage for a corresponding geographic coverage area 110. There may be overlapping geographic coverage areas 110. For example, a small cell 102' may have a coverage area 110' that overlaps with the coverage area 110 of one or more macro base stations 102. A network including both small cells and macro cells may be referred to as a heterogeneous network. A heterogeneous network may also include a home evolved B node (eNB) (HeNB), which may provide services to a restricted group referred to as a closed subscriber group (CSG). A communication link 120 between a base station 102 and a UE 104 may include an uplink (UL) (also referred to as a reverse link) transmission from the UE 104 to the base station 102 and / or a downlink (DL) (also referred to as a forward link) transmission from the base station 102 to the UE 104. The communication link 120 may use multiple input multiple output (MIMO) antenna technology, including spatial multiplexing, beamforming and / or transmit diversity. These communication links may be through one or more carriers. The base station 102 / UE 104 may use spectrum of up to Y MHz (e.g., 5, 10, 15, 20, 100, 400 MHz, etc.) bandwidth for each carrier allocated in the carrier aggregation for a total of up to Yx MHz (x component carriers) for transmission in each direction. The carriers may or may not be adjacent to each other. The allocation of carriers may be asymmetric with respect to DL and UL (e.g., more or fewer carriers may be allocated to DL compared to UL). The component carriers may include a primary component carrier and one or more secondary component carriers. The primary component carrier may be referred to as a primary cell (PCell) and the secondary component carrier may be referred to as a secondary cell (SCell).

[0041] Some UEs 104 may communicate with each other using a device-to-device (D2D) communication link 158. The D2D communication link 158 may use DL / UL WWAN spectrum. The D2D communication link 158 may use one or more sidelink channels, such as a physical sidelink broadcast channel (PSBCH), a physical sidelink discovery channel (PSDCH), a physical sidelink shared channel (PSSCH), and a physical sidelink control channel (PSCCH). The D2D communication may be through a variety of wireless D2D communication systems, such as, for example, FlashLinQ, WiMedia, Bluetooth, ZigBee, Wi-Fi based on the IEEE 802.11 standard, LTE, or NR.

[0042] The wireless communication system may further include a Wi-Fi access point (AP) 150 communicating with a Wi-Fi station (STA) 152 in the 5 GHz unlicensed spectrum via a communication link 154. When communicating in the unlicensed spectrum, the STA 152 / AP 150 may perform a clear channel assessment (CCA) prior to communication to determine whether the channel is available.

[0043] The small cell 102' may operate in a licensed and / or unlicensed spectrum. When operating in an unlicensed spectrum, the small cell 102' may employ NR and use the same 5 GHz unlicensed spectrum as used by the Wi-Fi AP 150. The small cell 102' employing NR in the unlicensed spectrum may boost the coverage of the access network and / or increase the capacity of the access network.

[0044] Whether a small cell 102' or a large cell (e.g., a macro base station), the base station 102 may include an eNB, a gB node (gNB), or another type of base station. Some base stations (such as gNB 180) may operate in traditional sub-6 GHz spectrum, millimeter wave (mmW) frequencies, and / or near mmW frequencies to communicate with UE 104. When gNB 180 operates in mmW or near mmW frequencies, gNB 180 may be referred to as a mmW base station. Extremely high frequency (EHF) is part of the RF in the electromagnetic spectrum. EHF has a range of 30 GHz to 300 GHz and a wavelength between 1 mm and 10 mm. The radio waves in this band may be referred to as millimeter waves. Near mmW can be extended down to 3 GHz frequencies with a wavelength of 100 mm. The super high frequency (SHF) band extends between 3 GHz and 30 GHz, which is also referred to as centimeter waves. Communications using mmW / near mmW radio frequency bands (e.g., 3 GHz–300 GHz) have extremely high path loss and short range. The mmW base station 180 may utilize beamforming 182 with the UE 104 to compensate for the extremely high path loss and short range.

[0045] Base station 180 may transmit beamformed signals to UE 104 in one or more transmit directions 182'. UE 104 may receive beamformed signals from base station 180 in one or more receive directions 182". UE 104 may also transmit beamformed signals to base station 180 in one or more transmit directions. Base station 180 may receive beamformed signals from UE 104 in one or more receive directions. Base station 180 / UE 104 may perform beam training to determine the receive direction and the transmit direction of each of base station 180 / UE 104. The transmit direction and the receive direction of base station 180 may be the same or may be different. The transmit direction and the receive direction of UE 104 may be the same or may be different.

[0046] The EPC 160 may include a mobility management entity (MME) 162, other MMEs 164, a serving gateway 166, a multimedia broadcast multicast service (MBMS) gateway 168, a broadcast multicast service center (BM-SC) 170, and a packet data network (PDN) gateway 172. The MME 162 may be in communication with a home subscriber server (HSS) 174. The MME 162 is a control node that handles signaling between the UE 104 and the EPC 160. In general, the MME 162 provides bearer and connection management. All user Internet Protocol (IP) packets are delivered through the serving gateway 166, which itself is connected to the PDN gateway 172. The PDN gateway 172 provides UE IP address allocation and other functions. The PDN gateway 172 and the BM-SC 170 are connected to IP services 176. The IP services 176 may include the Internet, an intranet, an IP multimedia subsystem (IMS), a PS streaming service, and / or other IP services. The BM-SC 170 may provide functionality for MBMS user service provisioning and delivery. The BM-SC 170 may serve as an entry point for content provider MBMS transmissions, may be used to authorize and initiate MBMS bearer services within a public land mobile network (PLMN), and may be used to schedule MBMS transmissions. The MBMS Gateway 168 may be used to distribute MBMS traffic to base stations 102 belonging to a multicast broadcast single frequency network (MBSFN) area broadcasting a specific service, and may be responsible for session management (start / stop) and for collecting MBMS related charging information.

[0047] The core network 190 may include an access and mobility management function (AMF) 192, other AMFs 193, a session management function (SMF) 194, and a user plane function (UPF) 195. The AMF 192 may be in communication with a unified data management (UDM) 196. The AMF 192 is a control node that handles signaling between the UE 104 and the core network 190. The AMF 192 provides QoS flow and session management. All user Internet Protocol (IP) packets are delivered through the UPF 195. The UPF 195 provides UE IP address allocation and other functions. The UPF 195 is connected to an IP service 197. The IP service 197 may include the Internet, an intranet, an IP multimedia subsystem (IMS), a PS streaming service, and / or other IP services.

[0048] A base station may also be referred to as a gNB, a Node B, an evolved Node B (eNB), an access point, a base transceiver station, a radio base station, a radio transceiver, a transceiver function, a basic service set (BSS), an extended service set (ESS), a transmission reception point (TRP), or some other suitable term. The base station 102 provides an access point to the EPC 160 or the core network 190 for the UE 104. Examples of UE 104 include a cellular phone, a smart phone, a Session Initiation Protocol (SIP) phone, a laptop, a personal digital assistant (PDA), a satellite radio, a global positioning system, a multimedia device, a video device, a digital audio player (e.g., an MP3 player), a camera, a game console, a tablet device, a smart device, a wearable device, a vehicle, an electric meter, a gas pump, a large or small kitchen appliance, a health care device, an implant, a sensor / actuator, a display, or any other similar functional device. Some UEs 104 may be referred to as IoT devices (e.g., parking meters, gas pumps, ovens, vehicles, heart monitors, etc.). UE 104 may also be referred to as a station, a mobile station, a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless device, a wireless communication device, a remote device, a mobile subscriber station, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a handset, a user agent, a mobile client, a client, or some other suitable terminology.

[0049] Figure 2 is an example flow chart 200 for reconfiguring one or more parameters associated with SPS based on a reconfigured DCI / MAC-CE in accordance with various aspects of the present disclosure.

[0050] At block 205, the base station 102 may transmit configuration information identifying a virtual CORESET or a virtual search space. For example, the base station 102 may transmit the information using a DCI, a MAC-CE, etc. The configuration information may include any information identifying or modifying a configuration for a virtual search space. By utilizing the DCI or MAC-CE, any parameters associated with SPS communications (e.g., downlink or uplink) may be reconfigured.

[0051] Various aspects of the present disclosure provide two techniques for modifying the format of the reconfigured DCI / MAC-CE. In a first example, various aspects of the present disclosure may reuse the existing SPS activation DCI format, which is slightly modified to signal to the UE that the base station has reconfigured one or more configuration parameters. Specifically, as discussed above, for SPS communication, the base station can allocate resources to the UE once and let the UE use these resources for subsequent periodic traffic without periodically allocating resources. In other words, the base station can assign a predefined amount of resources to the UE at a certain periodicity. Therefore, there is no need for the UE to request resources during each TTI, thereby saving control planning overhead at the base station. Thus, the base station can provide initial configuration information identifying the SPS configuration, and the UE can transmit or receive communications according to the SPS configuration. When scheduled semi-persistently, the UE may need to monitor the physical downlink control channel in each subframe because the eNB may use the downlink control information DCI to activate / reactivate / release the SPS at any time.

[0052] Thus, in a first example, aspects of the present disclosure utilize the existing activation DCI message format to further signal the reconfiguration of one or more reconfigured parameters associated with SPS communication (e.g., beam indication, MCS, rank, precoding matrix index, allocated time / frequency resources, period, offset, etc.). For example, the existing activation DCI message includes an invalid value that is not assigned. For example, a hybrid automatic repeat request (HARQ) process number with all "1s" is currently not used and can be used to signal the reconfigured parameters for SPS. In other examples, the DCI may indicate a BWP switch, but with a corresponding time domain resource allocation that is less than the BWP switch waiting time required by the UE. In an additional example, the DCI may indicate a beam switch, but with a corresponding time domain resource allocation that is less than the beam switch waiting time required by the UE. It should be appreciated that each of the above examples can be used individually or jointly in any combination. In some examples, a new RNTI that scrambles the CRC of the reconfiguration DCI can be used.

[0053] As such, the values ​​associated with the remaining fields in the reconfiguration DCI may be the same as those in the activation DCI (e.g., the values ​​that differ from the previous reconfiguration / activation DCI are parameters to be updated), or at least some of these values ​​may be redefined. Thus, the difference between the existing value definition and the new value definition may indicate a different definition. For example, a HARQ process number of 0001 may indicate that the remaining fields carry an updated PDSCH TCI state, while a HARQ process number of 0010 may indicate that the remaining fields carry an updated PDSCH MCS.

[0054] In a second example, an aspect of the present disclosure may introduce a new DCI format or a new MAC-CE for SPS / CG reconfiguration. In such instances, the fields of the new format may have fixed definitions (where each field may carry a reconfigured parameter value that may or may not be the same as the previous operating value), or at least a portion of the fields may have dynamic definitions. An indicator associated with the new DCI / MAC-CE format may signal which updated parameter values ​​are carried and allow the UE to be configured accordingly for SPS communications.

[0055] At block 210, the UE may determine whether the received DCI or MAC-CE is an activation DCI or a reconfiguration DCI based at least in part on the format of the DCI. At block 215, the UE may configure the UE for downlink SPS communication based at least in part on the determination. At block 220, the base station 102 may transmit SPS traffic based on the reconfigured parameters indicated in the previous DCI or MAC-CE.

[0056] Figure 3 300 is a timing diagram for transmitting a reconfigured DCI 315 and activating a reconfigured parameter during an SPS period 310 in accordance with various aspects of the present disclosure. Specifically, in some aspects, a base station may schedule a UE for SPS communication based on an initial SPS DCI 305 that may activate SPS communication. However, in some instances, during the SPS period 310, a base station may determine to transmit a reconfigured DCI 315 message to a UE. In such instances, an A / N rule may be used for an SPS deactivation DCI.

[0057] For example, upon receiving the reconfigured DCI 315, the UE may transmit an A / N 320 on the PUCCH indicating that the parameters have been activated (e.g., the reconfigured TCI state has been activated by the MAC-CE). In such an example, the reconfigured SPS parameters may be activated for subsequent SPS communications at the end of the A / N 320. However, if the A / N does not indicate any parameters that have been activated, the base station and the UE may wait for a predetermined period of time (e.g., 3 ms) from the end of the A / N 320 before activating the reconfigured parameters for subsequent SPS communications.

[0058] Figure 4 400 is a conceptual diagram of reconfigurable parameters for SPS / CG, which allows the base station and UE to coordinate resource repetition and position offset in each transmission cycle. For example, in a first instance, if during the initial transmission cycle, the first UE cannot receive the downlink PDSCH 405, then the various aspects of the present disclosure allow the SPS parameters to be reconfigured on a per-cycle basis so that for subsequent SPS cycles, the resources allocated by the base station for the UE can be offset and repeatedly provided when necessary, without inappropriately adjusting the allocation of all resources. For example, with respect to the illustrated example, due to the unsuccessful initial transmission, the reconfiguration for SPS may allow "UE N" and the first UE ("UE 1") to exchange positions 410, and resource repetition may be provided to the first UE. It will be appreciated that repetition can be across different beams to improve robustness. However, such reconfiguration will not affect the resource allocation for the remaining UEs, and will thereby minimize disruption to the network.

[0059] Figure 5 is a flow chart of an example wireless communication method 500. The method 500 may be performed by the base station 102 and / or components thereof.

[0060] At block 505, method 500 may determine at a base station to modify at least one parameter associated with semi-persistent scheduling (SPS) of traffic for one or more user equipment (UE). In some examples, the at least one parameter being modified may include one or more of resource repetition or position offset in each transmission period. In other examples, the at least one parameter may include one or more of the following: beam indication, modulation and coding scheme (MCS), rank, precoding matrix index, allocated time / frequency resources, period, position offset, resource repetition, or position offset. Aspects of block 510 may be referred to by reference to Figure 7 The SPS management component 640 described above is executed.

[0061] At block 510, method 500 may include generating a reconfiguration control message for transmission to the one or more UEs to signal a modification of the at least one parameter, wherein the reconfiguration control message is one of: a reconfigured downlink control information (DCI) that modifies the activation DCI, or a redesigned DCI or MAC-CE format. In some examples, the reconfigured DCI that modifies the activation DCI utilizes an invalid value not assigned by the activation DCI to signal that the base station has modified the at least one parameter associated with the SPS. In other examples, the redesigned DCI or MAC-CE format includes fields having fixed or dynamically defined fields such that each field will carry at least one reconfiguration parameter value. Aspects of block 510 may be referred to by reference to Figure 7 The SPS management component 640 described above is executed.

[0062] At block 515, method 500 may include transmitting the reconfiguration control message to the one or more UEs. Aspects of block 515 may be referred to as Figure 7 The transceiver 702 described above is used to perform.

[0063] It should be understood that the specific order or hierarchy of each box in the disclosed process / flowchart is an illustration of an example approach. It should be understood that the specific order or hierarchy of each box in these process / flowcharts can be rearranged based on design preferences. In addition, some boxes can be combined or omitted. The attached method claims present the elements of various boxes in an exemplary order and are not meant to be limited to the specific order or hierarchy presented.

[0064] Various aspects of the technology disclosed herein may be viewed as components that provide means for performing the functions of each particular component. Figure 6 , and with continued reference to prior figures for context, base station 102 can include an SPS management component 640. SPS management component 640 can include a determination component 642, a generation component 644, and a transmission component 646.

[0065] In some examples, the determining component 642 may be configured to determine at the base station to modify at least one parameter associated with the SPS of the traffic of one or more UEs, or may include means for the action. The generating component 644 may be configured to generate a reconfiguration control message for transmitting to the one or more UEs to signal the modification of the at least one parameter, wherein the reconfiguration control message is one of a reconfigured DCI that modifies activation downlink control information (DCI), or a format redesigned for DCI or MAC-CE; or may include means for the action. The transmitting component 646 may be configured to transmit the reconfiguration control message to the one or more UEs, or may include means for the action.

[0066] Reference Figure 7 , an example 700 of an implementation of the base station 102 may include a variety of components, some of which have been described above, but also include components such as one or more processors 712 and memory 716 in communication via one or more buses 744 and transceiver 702, which can operate in conjunction with the modem 714 and SPS management component 640 to implement one or more functions described herein related to selectively using dual connectivity. In addition, the one or more processors 712, modem 714, memory 716, transceiver 702, RF front end 788, and one or more antennas 765 can be configured to support voice or data calls (simultaneous or non-simultaneous) in one or more radio access technologies.

[0067] In one aspect, the one or more processors 712 may include a modem 714 using one or more modem processors. Various functions associated with the SPS management component 640 may be included in the modem 714 and / or the processor 712, and may be performed by a single processor in one aspect, while in other aspects, different functions in each function may be performed by a combination of two or more different processors. For example, in one aspect, the one or more processors 712 may include any one or any combination of the following: a modem processor, or a baseband processor, or a digital signal processor, or a transmission processor, or a receiver processor, or a transceiver processor associated with the transceiver 702. In other aspects, some features of the one or more processors 712 and / or the modem 714 associated with the SPS management component 640 may be performed by the transceiver 702.

[0068] In addition, the memory 716 can be configured to store data used herein or a local version of an application 775 or one or more of the SPS management component 640 or its subcomponents executed by at least one processor 712. The memory 716 may include any type of computer-readable medium that can be used by a computer or at least one processor 712, such as a random access memory (RAM), a read-only memory (ROM), a tape, a disk, an optical disk, a volatile memory, a non-volatile memory, and any combination thereof. In one aspect, for example, when the base station 102 is operating at least one processor 712 to execute one or more of the SPS management component 640 or its subcomponents, the memory 716 can be a non-transient computer-readable storage medium that stores one or more computer executable codes defining the SPS management component 640 or one or more of its subcomponents or data associated therewith.

[0069] The transceiver 702 may include at least one receiver 706 and at least one transmitter 708. The receiver 706 may include hardware, firmware, or software code executable by a processor for receiving data, the code including instructions and stored in a memory (such as a computer-readable medium). The receiver 706 may be, for example, a radio frequency (RF) receiver. In one aspect, the receiver 706 may receive signals transmitted by at least one base station 102. Additionally, the receiver 706 may process such received signals and may also obtain measurements of the signals, such as but not limited to per-chip capability to interference power ratio (Ec / Io), SNR, reference signal received power (RSRP), received signal strength indicator (RSSI), etc. The transmitter 708 may include hardware, firmware, or software code executable by a processor for transmitting data, the code including instructions and stored in a memory (such as a computer-readable medium). Suitable examples of the transmitter 708 may include, but are not limited to, an RF transmitter.

[0070] In addition, in an aspect, the base station 102 may include an RF front end 788 that may operate in communication with the one or more antennas 765 and the transceiver 702 for receiving and transmitting radio transmissions, such as wireless communications transmitted by at least one base station 102 or wireless transmissions transmitted by the base station 102. The RF front end 788 may be connected to the one or more antennas 765 and may include one or more low noise amplifiers (LNAs) 790, one or more switches 792, one or more power amplifiers (PAs) 798, and one or more filters 796 for transmitting and receiving RF signals.

[0071] In one aspect, the LNA 790 can amplify the received signal to a desired output level. In one aspect, each LNA 790 can have a specified minimum and maximum gain value. In one aspect, the RF front end 788 can use one or more switches 792 to select a particular LNA 790 and its specified gain value based on the desired gain value for a particular application.

[0072] In addition, for example, one or more PAs 798 can be used by the RF front end 788 to amplify the signal to obtain an RF output at a desired output power level. In one aspect, each PA 798 can have a specified minimum and maximum gain value. In one aspect, the RF front end 788 can use one or more switches 792 to select a particular PA 798 and its specified gain value based on the desired gain value for a particular application.

[0073] In addition, for example, one or more filters 796 can be used by the RF front end 788 to filter the received signal to obtain the input RF signal. Similarly, in one aspect, for example, a corresponding filter 796 can be used to filter the output from the corresponding PA 798 to produce an output signal for transmission. In one aspect, each filter 796 can be connected to a specific LNA 790 or PA 798. In one aspect, the RF front end 788 can use one or more switches 792 to select a transmit or receive path using a specified filter 796, LNA 790, or PA 798 based on the configuration specified by the transceiver 702 or the processor 712.

[0074] As such, the transceiver 702 can be configured to transmit and receive wireless signals through one or more antennas 765 via the RF front end 788. In one aspect, the transceiver 702 can be tuned to operate at a specified frequency so that the base station 102 can communicate with, for example, one or more UEs 104 or one or more cells associated with one or more UEs 104. In one aspect, the modem 714 can configure the transceiver 702 to operate at a specified frequency and power level based on the base station configuration of the base station 102 and the communication protocol used by the modem 714, for example.

[0075] In one aspect, the modem 714 can be a multi-band-multi-mode modem that can process digital data and communicate with the transceiver 702 so that the digital data is sent and received using the transceiver 702. In one aspect, the modem 714 can be multi-band and configured to support multiple frequency bands for a specific communication protocol. In one aspect, the modem 714 can be multi-mode and configured to support multiple operating networks and communication protocols. In one aspect, the modem 714 can control one or more components (such as the RF front end 788, the transceiver 702) of the UE 104 to achieve the transmission or reception of signals from the network based on the specified modem configuration. In one aspect, the modem configuration can be based on the mode of the modem and the frequency band in use. In another aspect, the modem configuration can be based on UE configuration information associated with the UE 104, such as provided by the network during cell selection or cell reselection.

[0076] The previous description is provided to enable any person skilled in the art to practice the various aspects described herein. Various modifications to these aspects will be easily understood by those skilled in the art, and the universal principles defined in this article can be applied to other aspects. Thus, the claims are not intended to be limited to the aspects shown in this article, but should be granted the full scope consistent with the claims in language, wherein the singular reference of the elements is not intended to represent "there is and only one", but "one or more", unless otherwise stated. The wording "exemplary" is used herein to mean "used as an example, instance or explanation". Any aspect described as "exemplary" herein does not have to be interpreted as being superior to or superior to other aspects. Unless otherwise stated, the term "some / certain" refers to one or more. Combinations such as "at least one of A, B or C", "one or more of A, B or C", "at least one of A, B and C", "one or more of A, B and C" and "A, B, C or any combination thereof" include any combination of A, B and / or C, and may include multiple A, multiple B or multiple C. Specifically, combinations such as "at least one of A, B, or C," "one or more of A, B, or C," "at least one of A, B, and C," "one or more of A, B, and C," and "A, B, C, or any combination thereof" may be A only, B only, C only, A and B, A and C, B and C, or A and B and C, wherein any such combination may include one or more members of A, B, or C. All structural and functional equivalents of the elements of the various aspects described throughout this disclosure that are currently or hereafter known to those of ordinary skill in the art are expressly incorporated herein by reference and are intended to be covered by the claims. In addition, nothing disclosed herein is intended to be dedicated to the public, regardless of whether such disclosure is expressly recorded in the claims. The terms "module," "mechanism," "element," "device," and the like may not be a substitute for the term "means." Thus, no claim element should be interpreted as a means-plus-function unless the element is explicitly stated using the phrase "means for..."

[0077] Reference Figure 8 , and with continued reference to the previous figures for context, a method for wireless communication according to an example of the technology disclosed herein is illustrated. In such a method, a UE receives a command for activating semi-persistent scheduling (SPS) on the UE - box 810. For example, the UE 104 has previously received an SPS configuration command from the base station 102 under the SPS radio network temporary identifier (RNTI) when a dedicated bearer for a VoIP service is established. Use of the configured SPS requires activation. The configuration causes the UE to monitor a PDCCH with a CRC scrambled by the SPS RNTI to find activation, reactivation, or release of the SPS via a DCI.

[0078] The UE operates under activated SPS - block 820. Continuing with this example, the UE continues to monitor the PDCCH with CRC scrambled by the SPS RNTI for activation, reactivation or release of SPS via DCI. However, the UE does not receive a new activation or reactivation or release of SPS.

[0079] The UE second receives a command for modifying at least one parameter of the operating SPS without releasing or reactivating the operating SPS - block 830. In this continued example, the command for modifying is included in a reconfigured DCI that modifies the activation DCI and modifies the beam indication of the UE. The reconfigured DCI utilizes a previously invalid value that was not assigned by the activation DCI, thereby signaling that the base station has modified the at least one parameter associated with the operating SPS.

[0080] The UE adjusts the UE configuration in response to the received command to modify - block 840. In this continued example, the UE adjusts the beam indication according to the received command to modify. The UE performs a second operation under the activated SPS using the adjusted UE configuration - block 850. In this continued example, the UE receives a subsequent transmission from the base station for the SPS RNTI using the adjusted beam indication.

[0081] Various aspects of the technology disclosed herein may be viewed as components that provide means for performing the functions of each particular component. Fig. 9 , and continuing to refer to the previous figures for context, the UE 104 may include a UE SPS component 910. The UE SPS component 910 may include a receiving component 911, an operating component 912, a second receiving component 913, and an adjustment component 914 and a second operating component 915.

[0082] In some examples, the receiving component 911 may be configured to receive a command for activating the SPS on the UE, or may include a device for the action. The operating component 912 may be configured to operate the UE under the current SPS in the absence of new activation or reactivation, or may include a device for the action. The second receiving component 913 may be configured to receive a second command for modifying at least one parameter of the SPS in the operation without releasing the SPS in the operation, or may include a device for the action. The adjustment component 914 may be configured to adjust the UE configuration in response to the received command for modification, or may include a device for the action. The second operating component 915 may be configured to perform a second operation under the activated SPS using the adjusted UE configuration, or may include a device for the action.

[0083] Reference Fig.10, an example of an implementation of UE 104 may include a variety of components, some of which have been described above in conjunction with the roles of each component in base station 102, including components such as one or more processors 712 and memory 716 in communication via one or more buses 744 and transceiver 702, which may operate in conjunction with modem 740 and / or US SPS component 910 to communicate, as further described herein. Each component performs a similar role in UE 104.

[0084] In one aspect, the one or more processors 712 may include a modem 740 and / or may be part of a modem 740 using one or more modem processors. Thus, various functions associated with the UE SPS component 910 may be included in the modem 740 and / or the processor 712, and in one aspect, may be performed by a single processor, while in other aspects, different functions of these functions may be performed by a combination of two or more different processors. For example, in one aspect, the one or more processors 712 may include any one or any combination of the following: a modem processor, or a baseband processor, or a digital signal processor, or a transmit processor, or a receiver processor, or a transceiver processor associated with the transceiver 702. In other aspects, some features of the one or more processors 712 and / or the modem 740 associated with the UE SPS component 910 may be performed by the transceiver 702.

[0085] In addition, the memory 716 may be configured to store data used herein and / or a local version of an application 775 executed by at least one processor 712 or one or more of the UE SPS components 910 and / or its subcomponents. The memory 716 may include any type of computer-readable medium that can be used by a computer or at least one processor 712, such as a random access memory (RAM), a read-only memory (ROM), a tape, a disk, an optical disk, a volatile memory, a non-volatile memory, and any combination thereof. On the one hand, for example, when the UE 104 is operating at least one processor 712 to execute one or more of the UE SPS components 910 and / or its subcomponents, the memory 716 may be a non-transient computer-readable storage medium that stores one or more computer executable codes and / or data associated with the UE SPS components 910 and / or its subcomponents.

[0086] Some further example implementations

[0087] An example wireless communication method for a base station, comprising: determining at the base station that at least one parameter associated with semi-persistent scheduling (SPS) of traffic for one or more user equipment (UE) is to be modified; generating a reconfiguration control message for transmission to the one or more UEs to signal the modification of the at least one parameter, wherein the reconfiguration control message is one of a reconfigured DCI or a redesigned DCI or MAC-CE format that modifies activation downlink control information (DCI); and transmitting the reconfiguration control message to the one or more UEs.

[0088] As in the above example method, the reconfigured DCI that modifies the activation DCI utilizes an invalid value that is not assigned by the activation DCI to signal that the base station has modified the at least one parameter associated with the SPS.

[0089] Any of the example methods as in the above, wherein the redesigned DCI or MAC-CE format includes fields with fixed or dynamic definitions such that each field will carry at least one reconfiguration parameter value.

[0090] As in any of the above example methods, the at least one parameter that is modified includes one or more of resource repetition or position offset in each transmission cycle.

[0091] As in any of the above-mentioned example methods, wherein the at least one parameter includes one or more of the following: beam indication, modulation and coding scheme (MCS), rank, precoding matrix index, allocated time / frequency resources, periodicity, position offset, resource repetition or position offset.

[0092] An example wireless communication device for a base station, comprising: a memory storing computer-executable instructions; and at least one processor coupled to the memory and configured to: determine at the base station to modify at least one parameter associated with semi-persistent scheduling (SPS) of traffic for one or more user equipment (UE); generate a reconfiguration control message for transmission to the one or more UEs to signal the modification of the at least one parameter, wherein the reconfiguration control message is one of a reconfigured DCI or a redesigned DCI or MAC-CE format that modifies activation downlink control information (DCI); and transmit the reconfiguration control message to the one or more UEs.

[0093] As in the above example apparatus, the reconfigured DCI that modifies the activation DCI utilizes an invalid value that is not assigned by the activation DCI to signal that the base station has modified the at least one parameter associated with the SPS.

[0094] An apparatus as in any of the above examples, wherein the redesigned DCI or MAC-CE format includes fields with fixed or dynamic definitions such that each field will carry at least one reconfiguration parameter value.

[0095] As in any of the above example apparatuses, wherein the at least one parameter that is modified includes one or more of resource repetition or position offset in each transmission cycle.

[0096] As in any of the above-mentioned example devices, wherein the at least one parameter includes one or more of the following: beam indication, modulation and coding scheme (MCS), rank, precoding matrix index, allocated time / frequency resources, periodicity, position offset, resource repetition or position offset.

[0097] An example computer-readable medium for wireless communications of a base station, comprising: determining at the base station that at least one parameter associated with semi-persistent scheduling (SPS) of traffic for one or more user equipment (UE) is to be modified; generating a reconfiguration control message for transmission to the one or more UEs to signal the modification of the at least one parameter, wherein the reconfiguration control message is one of a reconfigured DCI or a redesigned DCI or MAC-CE format that modifies activation downlink control information (DCI); and transmitting the reconfiguration control message to the one or more UEs.

[0098] As in the example computer-readable medium above, the reconfigured DCI that modifies the activation DCI utilizes an invalid value that is not assigned by the activation DCI to signal that the base station has modified the at least one parameter associated with the SPS.

[0099] As in any of the example computer readable media above, wherein the redesigned DCI or MAC-CE format includes fields with fixed or dynamic definitions such that each field will carry at least one reconfiguration parameter value.

[0100] As in any of the example computer readable media above, wherein the at least one parameter that is modified includes one or more of resource repetition or position offset in each transmission cycle.

[0101] As in any of the above-mentioned example computer-readable media, wherein the at least one parameter includes one or more of the following: beam indication, modulation and coding scheme (MCS), rank, precoding matrix index, allocated time / frequency resources, periodicity, position offset, resource repetition or position offset.

[0102] An example wireless communication method for a UE, comprising: receiving, by a user equipment (UE) of a wireless communication system, a command for activating semi-persistent scheduling (SPS) on the UE; operating, by the UE, under the activated SPS; secondly receiving, by the UE, a command for modifying at least one parameter of the operating SPS without releasing the SPS; adjusting, by the UE, a UE configuration in response to the received command for modification; and performing a second operation, by the UE, under the adjusted UE configuration.

[0103] Another example includes the above-mentioned example wireless communication method for UE, wherein the command for modifying is included in one of the reconfigured DCI that modifies activation downlink control information (DCI) or the redesigned format for DCI or MAC-CE. Another example includes any of the above-mentioned example wireless communication methods for UE, wherein the reconfigured DCI that modifies the activation DCI uses an invalid value not assigned by the activation DCI to signal that the base station has modified the at least one parameter of the SPS in operation. Another example includes any of the above-mentioned example wireless communication methods for UE, wherein the redesigned DCI or MAC-CE format includes fields with fixed or dynamic definitions so that each field will carry at least one reconfiguration parameter value.

[0104] Another example includes any of the above example wireless communication methods for a UE, wherein the at least one parameter includes one or more of resource repetition or position offset in each transmission period.

[0105] Another example includes any of the above-mentioned example wireless communication methods for a UE, wherein the at least one parameter includes one or more of the following: beam indication, modulation and coding scheme (MCS), rank, precoding matrix index, allocated time / frequency resources, periodicity, position offset, resource repetition, or position offset.

[0106] An example wireless communication device (e.g., UE) includes: a memory storing computer-executable instructions; and at least one processor coupled to the memory. The processor is configured to: receive a command for activating semi-persistent scheduling (SPS) on the UE; operate under the activated SPS; second receive a command for modifying at least one parameter of the operating SPS without releasing the operating SPS; adjust the configuration of the device in response to the received command for modification; and perform a second operation under the adjusted device configuration.

[0107] Another example includes the above-mentioned example wireless communication device for UE, wherein the command for modification is included in one of the reconfigured DCI or the format redesigned for DCI or MAC-CE that modifies the activation downlink control information (DCI). Another example includes any of the above-mentioned example wireless communication devices for UE, wherein the reconfigured DCI that modifies the activation DCI uses an invalid value not assigned by the activation DCI to signal that the base station has modified the at least one parameter of the SPS in the operation. Another example includes any of the above-mentioned example wireless communication devices for UE, wherein the redesigned DCI or MAC-CE format includes fields with fixed or dynamic definitions so that each field will carry at least one reconfiguration parameter value. Another example includes any of the above-mentioned example wireless communication devices for UE, wherein the at least one parameter includes one or more of resource repetition or position offset in each transmission cycle. Another example includes any of the above-mentioned example wireless communication devices for UE, wherein the at least one parameter includes one or more of the following: beam indication, modulation and coding scheme (MCS), rank, precoding matrix index, allocated time / frequency resources, periodicity, position offset, resource repetition or position offset.

Claims

1. A wireless communication method, comprising: determining, at a base station, to modify at least one parameter associated with semi-persistent scheduling (SPS) of traffic for one or more user equipments (UEs); generating a reconfiguration control message for transmitting to the one or more UEs to signal the modification of the at least one parameter, wherein the reconfiguration control message is a reconfigured downlink control information (DCI) that modifies the activation DCI, the reconfigured DCI that modifies the activation DCI utilizes an invalid value not assigned by the activation DCI to signal that the base station has modified the at least one parameter associated with the SPS; as well as The reconfiguration control message is transmitted to the one or more UEs.

2. The method of claim 1, wherein the at least one parameter that is modified comprises one or more of resource repetition or position offset in each transmission cycle.

3. The method of claim 1, wherein the at least one parameter comprises one or more of: beam indication, modulation and coding scheme (MCS), rank, precoding matrix index, allocated time / frequency resources, periodicity, position offset, resource repetition, or position offset.

4. An apparatus for wireless communication, comprising: a memory storing computer executable instructions; as well as at least one processor coupled to the memory and configured to: determining, at a base station, to modify at least one parameter associated with semi-persistent scheduling (SPS) of traffic for one or more user equipments (UEs); generating a reconfiguration control message for transmitting to the one or more UEs to signal the modification of the at least one parameter, wherein the reconfiguration control message is a reconfigured downlink control information (DCI) that modifies the activation DCI, the reconfigured DCI that modifies the activation DCI utilizes an invalid value not assigned by the activation DCI to signal that the base station has modified the at least one parameter associated with the SPS; as well as The reconfiguration control message is transmitted to the one or more UEs.

5. The apparatus of claim 4, wherein the at least one parameter that is modified comprises one or more of resource repetition or position offset in each transmission cycle.

6. The apparatus of claim 4, wherein the at least one parameter comprises one or more of: beam indication, modulation and coding scheme (MCS), rank, precoding matrix index, allocated time / frequency resources, periodicity, position offset, resource repetition, or position offset.

7. A wireless communication method, comprising: Receiving, by a user equipment (UE) of a wireless communication system, a command for activating semi-persistent scheduling (SPS) on the UE, wherein the command for activating is included in a reconfigured downlink control information (DCI) that modifies the activation DCI, the reconfigured DCI that modifies the activation DCI utilizing an invalid value not assigned by the activation DCI to signal that a base station has modified at least one parameter associated with the SPS; The UE operates under the activated SPS; receiving, by the UE, a second command for modifying at least one parameter of the operating SPS without releasing the operating SPS; adjusting, by the UE, a UE configuration in response to the received command to modify; as well as The UE performs a second operation under the activated SPS using the adjusted UE configuration.

8. The method of claim 7, wherein the at least one parameter comprises one or more of resource repetition or position offset in each transmission period.

9. The method of claim 7, wherein the at least one parameter comprises one or more of: beam indication, modulation and coding scheme (MCS), rank, precoding matrix index, allocated time / frequency resources, periodicity, position offset, resource repetition, or position offset.

10. An apparatus for wireless communication, comprising: a memory storing computer executable instructions; as well as at least one processor coupled to the memory and configured to: receiving a command for activating semi-persistent scheduling (SPS) on a UE, wherein the command for activating is included in a reconfigured downlink control information (DCI) that modifies activation DCI, the reconfigured DCI that modifies the activation DCI utilizing an invalid value not allocated by the activation DCI to signal that a base station has modified at least one parameter associated with the SPS; Operate with SPS activated; second receiving a command for modifying at least one parameter of an operating SPS without releasing the operating SPS; adjusting a configuration of the device in response to the received command to modify; as well as A second operation is performed under the activated SPS using the adjusted device configuration.

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