Method, apparatus, and system for transmitting physical layer control message
A two-stage PHY layer control message structure addresses the limitations of traditional PHY layer control messages by allowing variable payloads and enhanced functionality, ensuring low latency and high reliability in wireless systems.
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-12-25
- Publication Date
- 2026-04-02
AI Technical Summary
Existing wireless systems face limitations in expanding the payload and functionality of physical layer control messages while maintaining low latency and high reliability, as traditional PHY layer control messages have fixed payloads and limited expandability.
Implementing a two-stage physical layer control message structure, where the first stage indicates the resource for the second stage, allowing the second stage to carry variable and large payloads, supporting various operations and functions with low latency and high reliability.
The two-stage control message design enhances the expandability of PHY layer control messages, enabling support for multiple functions and operations with improved efficiency and reduced ambiguity between transmitting and receiving ends.
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Figure CN2024142292_02042026_PF_FP_ABST
Abstract
Description
METHOD, APPARATUS, AND SYSTEM FOR TRANSMITTING PHYSICAL LAYER CONTROL MESSAGECROSS-REFERENCE TO RELATED APPLICATIONS
[0001] The present application is related to, and claims priority to, United States provisional patent application Serial No. 63 / 701,009, entitled “Method and Apparatus for Unified Control Signal Design” , filed on September 30, 2024.
[0002] The disclosure of the aforementioned application is hereby incorporated by reference in its entirety.TECHNICAL FIELD
[0003] Implementations of the present application relate to the field of communications, and more specifically, to a communication method and a communication apparatus.BACKGROUND
[0004] In wireless systems, there are different types of control messages (or control signals) , including physical (PHY) layer control message, medium access control (MAC) layer control message, and / or radio resource control (RRC) layer control message. Different types of control messages may have different characteristics and be used for different functions and / or missions and / or operations.
[0005] The PHY layer control message has advantages such as low transmission latency, high reliability, and no reliance on re-transmission mechanism compared to higher layer control messages (e.g. the MAC layer control message and the RRC control message) . However, the PHY layer control message can only be used for relatively a few functions in traditional wireless systems, as payloads of PHY layer control message are relatively fixed and not easy to expand or change.
[0006] Therefore, how to improve expandability of control messages to support more kinds of functions while meeting requirements such as low latency and high reliability becomes an urgent problem to be solved.SUMMARY
[0007] Implementations of the present application provide a communication method and a communication apparatus. The technical solutions may allow two-stage physical layer control messages to carry unified control information, where the first stage is used to indicate the second stage, and the second stage is used to carry control information. Thereby, physical layer control message may support large and variable payload of control information, thus more kinds of functions can be supported by physical layer control message, which has advantages such as low transmission latency and high reliability.
[0008] According to a first aspect, a communication method is described. The method may be applied at a network side, for example, a base station or a component (for example, a circuit, a chip, or a chip system) in a base station on a network side. For example, the method is applied to a base station. In this method, the base station transmits a first physical layer control message indicative of a resource used to transmit a second physical layer control message; and transmits a second type of the second physical layer control message indicative of first control information used to support an operation, where the operation is one or more of: configuration, re-configuration, mode indication, mode switching, dynamic indication, power control command, dynamic request, dynamic sleeping command, dynamic wake-up command, dynamic parameter update, and dynamic parameter change.
[0009] According to a second aspect, a communication method is described. The method may be applied at a terminal side, for example, a terminal (e.g. a user equipment (UE) ) , a module in a terminal, or a circuit or a chip (for example, a modem chip, also referred to as a baseband chip, or a system on chip (SoC) chip or a system in package (SIP) chip that includes a modem core) that is responsible for a communication function in a terminal. For example, the method is applied to a terminal. In this method, the terminal receives a first physical layer control message indicative of a resource used to transmit a second physical layer control message; and receives a second type of the second physical layer control message indicative of first control information used to support an operation, where the operation is one or more of: configuration, re-configuration, mode indication, mode switching, dynamic indication, power control command, dynamic request, dynamic sleeping command, dynamic wake-up command, dynamic parameter update, and dynamic parameter change. In some implementations, the second physical layer control message is received on and / or using the resource.
[0010] In some implementations, the first control information indicated by the second type of the second physical layer control message may be further used to support other functions and / or missions and / or operations which are not related to scheduling of data transmission. For example, the first control information may be used to support a control function which is supported by an RRC layer control message or a MAC layer control message in traditional wireless systems. For another example, the first control information may be used to support a control function for new services and / or applications in future wireless systems.
[0011] According to the above technical solution, two-stage physical layer control messages carry unified control information, where the first stage is used to indicate the resource for the second stage, and the second stage is used to carry control information. The first stage is also used to carry some control information. The physical layer control messages have advantages such as low transmission latency and high reliability. Furthermore, two-stage control signaling design enables the second physical layer control message (i.e. the second stage) to support large and variable payload of control information. As a consequence, the second physical layer control message may support more kinds of functions and operations. Thus, expandability of control messages can be improved to support more kinds of functions while meeting requirements such as low latency and high reliability.
[0012] With reference to the first aspect or the second aspect, in a possible design, the second type of the second physical layer control message further indicates a time gap between a first time and a second time, where the first time is a time when the second type of the second physical layer control message is transmitted, and the second time is a time when the operation is expected to be completed.
[0013] According to the above technical solution, a time gap between a time when the control message is transmitted by the base station and a time when the base station may assume that the terminal executes the operation indicated by the control message can be clearly indicated. Thus, ambiguity between the transmitting end and the receiving end can be avoided, and efficiency and performance of control message transmission can be improved.
[0014] With reference to the first aspect or the second aspect, in a possible design, the second type of the second physical layer control message further indicates a resource used to transmit an acknowledgment (ACK) indicating that the second type of the second physical layer control message is received.
[0015] According to the above technical solution, the base station may determine whether the control message is received by the terminal according to a certain ACK resource. Thus, ambiguity between the transmitting end and the receiving end can be avoided.
[0016] With reference to the first aspect or the second aspect, in a possible design, the second type of the second physical layer control message further indicates an identification of the first control information.
[0017] In some implementations, the second type of the second physical layer control message may include a header as the identification of the first control information. The header may be associated with some description about the first control information, such as a type of the first control information.
[0018] According to the above technical solution, the terminal may interpret the content of received first control information according to the identification of the first control information. Thus, the first control information can be used to support multiple kinds of operations.
[0019] With reference to the first aspect, in a possible design, the method further includes: transmitting a first type of the second physical layer control message indicative of second control information, where the second control information is used to schedule data transmission.
[0020] With reference to the second aspect, in a possible design, the method further includes: receiving a first type of the second physical layer control message indicative of second control information, where the second control information is used to schedule data transmission.
[0021] According to the above technical solution, another type of the second physical layer control message, which is used to schedule data transmission, may also be indicated by the first physical layer control message. Thus, different types of physical layer control messages, including physical layer control messages used to schedule data transmission and physical layer control messages used to support other operations unrelated to scheduling of data transmission, may be designed as a unified and / or harmonized structure. Thus, multiple types of control messages can be made easy to maintain.
[0022] With reference to the first aspect or the second aspect, in a possible design, the second control information includes one or more of: modulation and coding scheme (MCS) used for the data transmission, identity (ID) of hybrid automatic repeat request (HARQ) process for the data transmission, precoding indication for the data transmission, and HARQ acknowledgment (HARQ-ACK) resource for feedback of the data transmission.
[0023] According to the above technical solution, multiple kinds of control information used to schedule data transmission can be supported by the first type of the second physical layer control message.
[0024] With reference to the first aspect or the second aspect, in a possible design, the data transmission includes one or more of: communication data transmission, artificial intelligence (AI) data transmission, and sensing data transmission.
[0025] In some implementations, the data transmission may include data transmission for new services and / or applications in future wireless systems.
[0026] According to the above technical solution, multiple kinds of data transmission can be scheduled by the first type of the second physical layer control message.
[0027] With reference to the first aspect or the second aspect, in a possible design, the resource used to transmit the second physical layer control message includes one or more of: one or more symbols used to transmit the second physical layer control message in time dimension, one or more physical resource blocks (PRBs) used to transmit the second physical layer control message in frequency dimension, and one or more transmission layers used to transmit the second physical layer control message in spatial dimension.
[0028] According to the above technical solution, the flexibility of resource allocation of the control message can be improved. Thus, multiple performance requirements under different payloads of the control signals and channel conditions can be satisfied.
[0029] With reference to the first aspect or the second aspect, in a possible design, the first physical layer control message further indicates MCS used for the second physical layer control message.
[0030] It should be noted that, in the case where the MCS is indicated by the first physical layer control message, the terminal may determine payload of the second physical layer control message according to the MCS and the resource of the second physical layer control message.
[0031] According to the above technical solution, the MCS and the resource of the second physical layer control message indicated by the first physical layer control message can be used to decode the second physical layer control message.
[0032] With reference to the first aspect or the second aspect, in a possible design, the first physical layer control message further indicates payload of the second physical layer control message.
[0033] It should be noted that, in the case where the payload is indicated by the first physical layer control message, the terminal may determine MCS of the second physical layer control message according to the payload and the resource of the second physical layer control message.
[0034] In some implementations, the first physical layer control message may include a header, and the header is associated with the payload of the second physical layer control message.
[0035] According to the above technical solution, the payload and the resource of the second physical layer control message indicated by the first physical layer control message can be used to decode the second physical layer control message.
[0036] With reference to the first aspect or the second aspect, in a possible design, the first physical layer control message further indicates third control information, the third control information is used to schedule data transmission, and the data transmission includes one or more of: communication data transmission, AI data transmission, and sensing data transmission.
[0037] According to the above technical solution, the first physical layer control message (i.e. the first stage of the two-stage physical layer control messages) can also be used to schedule multiple kinds of data transmission.
[0038] According to a third aspect, a communication apparatus is described. The communication apparatus has a function of implementing the first aspect. For example, the communication apparatus includes a corresponding module, unit, or means for performing operations in the first aspect. The module, unit, or means may be specifically implemented by using software, may be implemented by using hardware, or may be implemented by using software in combination with hardware.
[0039] According to a fourth aspect, a communication apparatus is described. The communication apparatus has a function of implementing the second aspect. For example, the communication apparatus includes a corresponding module, unit, or means for performing operations in the second aspect. The module, unit, or means may be specifically implemented by using software, may be implemented by using hardware, or may be implemented by using software in combination with hardware.
[0040] According to a fifth aspect, another communication apparatus is described. The communication apparatus includes a memory and one or more processors. The memory is configured to store a part or all of a necessary computer program or instructions for implementing a function in the first aspect. The one or more processors may execute the computer program or the instructions, and when the computer program or the instructions is / are executed, the communication apparatus is enabled to implement the method in any possible design or implementation of the first aspect.
[0041] In some implementations, the communication apparatus may further include an interface circuit, and the processor is configured to communicate with another apparatus or component through the interface circuit.
[0042] In some implementations, the communication apparatus may further include the memory.
[0043] The communication apparatus may be a base station, a module in a base station, or a chip responsible for a communication function in a base station, for example, a modem chip (also referred to as a baseband chip) or an SoC chip or a SIP chip that includes a modem module
[0044] According to a sixth aspect, another communication apparatus is described. The communication apparatus includes a memory and one or more processors. The memory is configured to store a part or all of a necessary computer program or instructions for implementing a function in the second aspect. The one or more processors may execute the computer program or the instructions, and when the computer program or the instructions is / are executed, the communication apparatus is enabled to implement the method in any possible design or implementation of the second aspect.
[0045] In some implementations, the communication apparatus may further include an interface circuit, and the processor is configured to communicate with another apparatus or component through the interface circuit.
[0046] In some implementations, the communication apparatus may further include the memory.
[0047] The communication apparatus may be a terminal, a module in a terminal, or a chip responsible for a communication function in a terminal, for example, a modem chip (also referred to as a baseband chip) or an SoC chip or a SIP chip that includes a modem module.
[0048] According to a seventh aspect, a communication system is described. The communication system includes a first communication apparatus and / or a second communication apparatus, the first communication apparatus is configured to perform the method in any possible design or implementation of the first aspect, and the second communication apparatus is configured to perform the method in any possible design or implementation of the second aspect.
[0049] According to an eighth aspect, a computer-readable storage medium is described. The computer-readable storage medium stores computer-readable instructions, and when a computer reads and executes the computer-readable instructions, the computer is enabled to perform the method in any one of the possible designs of the first or the second aspect.
[0050] According to a ninth aspect, this application provides a computer program product. When a computer reads and executes the computer program product, the computer is enabled to perform the method in any one of the possible designs of the first or the second aspect.
[0051] According to a tenth aspect, this application provides a system comprising at least one of an apparatus in (or at) a UE of the present application, or an apparatus in (or at) a network device of the present application.
[0052] According to an eleventh aspect, this application provides a method performed by a system comprising at least one of an apparatus in (or at) a UE of the present application, and an apparatus in (or at) a network device of the present application.
[0053] This application encompasses various implementations, including not only method implementations, but also other implementations such as apparatus implementations and implementations related to non-transitory computer readable storage media. Implementations may incorporate, individually or in combinations, the features disclosed herein.DESCRIPTION OF DRAWINGS
[0054] FIG. 1 is a schematic diagram of an application scenario according to this application;
[0055] FIG. 2 illustrates an example communication system 100;
[0056] FIG. 3 illustrates an example of an electronic device (ED) and a base station;
[0057] FIGS. 4-5 are schematic block diagrams of possible devices according to implementations of this application;
[0058] FIG. 6 is a schematic flowchart of a communication method 600 according to an implementation of this application;
[0059] FIG. 7 illustrates an example of structure of two-stage control signals;
[0060] FIG. 8 illustrates an example of structure of two-type control signals;
[0061] FIG. 9 illustrates an example of time gap to execute a control action;
[0062] FIG. 10 illustrates an example of ACK resource;
[0063] FIG. 11 illustrates an example of indication for type of a control message;
[0064] FIG. 12 illustrates an example of format of 2nd type of control signal;
[0065] FIG. 13 illustrates an example of indication for MCS;
[0066] FIG. 14 illustrates an example resource allocation in time dimension;
[0067] FIG. 15 illustrates an example resource allocation in frequency dimension;
[0068] FIG. 16 illustrates an example resource allocation in spatial dimension;
[0069] FIG. 17 illustrates an example of indication for resource allocation; and
[0070] FIG. 18 is a schematic block diagram of a system according to implementations of this application. DESCRIPTION OF IMPLEMENTATIONS
[0071] The following describes technical solutions of the present application with reference to the accompanying drawings.
[0072] The technical solutions in implementations of this application may be applied to various communication systems, such as a fifth generation (5G) wireless communications system, a new radio (NR) wireless communications system, a future communication system, integrated access and backhaul (IAB) system, a mesh network, a side link system, or other evolving communication systems. The technical solutions in implementations of this application may be applied to the communication system that integrates the above two or more systems.
[0073] For ease of understanding the implementations of this application, a communications system shown in FIGS. 1-3 is first used as an example to describe in detail a communications system to which the implementations of this application are applicable.
[0074] FIG. 1 is a schematic diagram of an application scenario according to this application. Referring to FIG. 1, as an illustrative example, a simplified schematic illustration of a communication system is provided. The communication system 100 may include a radio access network 120. The radio access network (RAN) 120 may be an advanced radio access network, or a 5th generation (5G) , 4th generation (4G) , 3th generation (3G) or 2nd generation (2G) radio access network. In some implementations, advanced radio access refers to a next generation air interface of standards which may include both terrestrial networks (TNs) and non-terrestrial networks (NTNs) , and more details will be described below. One or more communication electronic devices (ED) 110a, 110b, 110c, 110d, 110e, 110f, 110g, 110h, 110i, 110j (generically referred to as 110) may be interconnected to one another or connected to one or more network nodes 170a, 170b (generically referred to as 170) in the RAN 120. A core network (CN) 130 may be a part of the communication system and may be dependent or independent of the radio access technology used in the communication system 100. The communication system 100 may also include a public switched telephone network (PSTN) 140, the Internet 150, and other networks 160.
[0075] In general, the communication system 100 enables communication of multiple wireless or wired elements. The communication system 100 may provide content, such as voice, data, video, and / or text, via broadcast, multicast, groupcast, unicast, etc. The communication system 100 may operate by sharing resources, such as carrier spectrum bandwidth, among its constituent elements.
[0076] The communication system 100 may provide a wide range of communication services and applications including enhanced Mobile Broadband (eMBB) services, ultra-reliable low-latency communication (URLLC) services, massive machine type communication (mMTC) services, integrated sensing and communication (ISAC) , immersive communication, massive communication, Hyper reliable and low-latency communication, ubiquitous connectivity, integrated AI and communication, and other services that can be provided by a future generation communication system. The communication system 100 may provide other services and applications such as earth monitoring, remote sensing, passive sensing and positioning, navigation and tracking, autonomous delivery and mobility, etc.
[0077] The communication system 100 may include a terrestrial communication system (or network) and / or a non-terrestrial communication system (or network) . The communication system 100 may provide a high degree of availability and robustness through a joint operation of a terrestrial communication system and a non-terrestrial communication system. For example, integrating a non-terrestrial communication system (or components thereof) into a terrestrial communication system can result in a heterogeneous network comprising multiple layers. The heterogeneous network may achieve better overall performance through efficient multi-link joint operation, more flexible functionality sharing, and faster physical layer link switching between terrestrial networks and non-terrestrial networks. The terrestrial communication system and the non-terrestrial communication system could be considered sub-systems of the communication system 100.
[0078] FIG. 2 illustrates another example for communication system 100. As described earlier, the communication system 100 may include ED 110a, 110b, 110c, 110d (generically referred to as ED 110) , RAN 120a, 120b, and one or more of a CN 130, a PSTN 140, the Internet 150, and other networks 160. In addition, the communication system 100 may also include a non-terrestrial network (NTN) 120c. The RANs 120a, 120b may include respective network nodes 170a, 170b such as base stations 170a, 170b, which may be generically referred to as terrestrial network (TN) devices or terrestrial transmit and receive points (T-TRPs) 170a, 170b (generically referred to as 170) . As referred to herein, the terms “TRP” and “base station” may be used interchangeably unless explicitly noted otherwise in a given example or section. For brevity, this disclosure may primarily refer to base station; however, absent an explicit limitation, references to TRP are merely non-limiting instances of interchangeable use. The T-TRPs 170a, 170b may be base stations mounted on a building or tower. In one implementation, the NTN 120c includes a RAN node such as base station 172, which may be generically referred to as an NTN device, a non-terrestrial node, a non-terrestrial network device, a non-terrestrial base station, or a non-terrestrial transmit and receive point (NT-TRP) 172.
[0079] In some implementations, the NT-TRP 172 is not attached to the ground, for example, in the case of an airborne base station. An airborne base station may be implemented using communication equipment supported or carried by a flying device. For example, a flying device may include an airborne platform (e.g. a blimp or an airship) , balloon, drone (e.g. quadcopter) , and other types aerial vehicles. In some implementations, an airborne base station may be supported or carried by an unmanned aerial system (UAS) or an unmanned aerial vehicle (UAV) , such as a drone. An airborne base station may be a moveable or mobile base station that can be flexibly deployed in different locations to meet network demand. A satellite base station is another example of a non-terrestrial base station. A satellite base station may be implemented using communication equipment supported or carried by a satellite. A satellite base station may also be referred to as an orbiting base station. High altitude platform is yet another example of a non-terrestrial base station, including international mobile telecommunication base stations.
[0080] As referred to herein, and unless specified otherwise, a “TRP” may also refer to a T-TRP or a NT-TRP, a “T-TRP” may also refer to a “TN TRP” , and a “NT-TRP” may also refer to a “NTN TRP” . The NTN 120c may be considered to be a radio access network (RAN) , with operational aspects in common with the RANs 120a, 120b. The NTN 120c may include at least one NTN device and at least one corresponding terrestrial network device, the at least one NTN device may function as a transport layer device and the at least one corresponding terrestrial network device may function as a RAN node, which communicates with the ED 110 via the non-terrestrial network device. In addition, there may be an NTN gateway in the ground (i.e., referred as a terrestrial network device) that also functions as a transport layer device to communicate with both the NTN device and the RAN node. The RAN node may communicate with the ED 110 via the NTN device and the NTN gateway. In some implementations, the NTN gateway and the RAN node may be located in the same device.
[0081] A base station (also referred to as TRP as stated above) 170 may be a network element in radio access network responsible for radio transmission and reception in one or more cells to or from the user equipment. Base station 170 may be known by other names in some implementations, such as a base transceiver station (BTS) , a radio base station, a network node, a network device, a device on the network side, a transmit / receive node, a Node B, an evolved NodeB (eNodeB or eNB) , a Home eNodeB, a next Generation NodeB (gNB) , a transmission point (TP) , a site controller, an access point (AP) , a wireless router, a relay station, a terrestrial node, a terrestrial network device, a terrestrial base station, a positioning node, among other possibilities. The base station 170 may be a macro base station (BS) , a pico BS, a relay node, a donor node, or the like, or combinations thereof. When a base station 170 performs (or is configured to perform) a method described herein, it may be interpreted as the base station, one or more modules (or units) in the base station, a circuit or chip, or a combination thereof, may perform the method. For example, the circuit or chip may include a modem chip, also referred to as a baseband chip, a system on chip (SoC) including a modem core, system in package (SIP) ) , and the like, and may be responsible for one or more communication functions in the base station.
[0082] The EDs 110a-110d and TRPs 170a-170b, 172 are examples of communication equipment that can be configured to implement some or all of the operations and / or implementations described herein. The T-TRP 170a forms part of the RAN 120a, which may include other TRPs, and / or other devices. Also, the TRP 170b forms part of the RAN 120b, which may include other TRPs, and / or devices. Each TRP 170a, 170b may transmit and / or receive wireless signals within a particular geographic region or area, sometimes referred to as a “cell” or “coverage area” . The TRPs 170a-170b may be responsible for allocating and / or configuring resources and transmission and / or reception in a set of cells. A cell may be a radio network object that can be uniquely identified from an identification (or a cell identification) that is broadcasted over a geographical region or area from base stations associated with the cell. A cell can be either FDD or TDD mode. A cell may also refer to the carrier frequencies within the DL / UL carrier bandwidth resources of a single standalone carrier or a component carrier in a carrier aggregation mode. A cell may be further divided into cell sectors, and a base station 170a-170b may, for example, employ multiple transceivers to provide service to multiple sectors. In some implementations, there may be established pico or femto cells where the radio access technology supports such. In some implementations, multiple transceivers could be used for each cell, for example using multiple-input multiple-output (MIMO) technology. The number of RAN 120a-120b shown is exemplary only. Any number of RAN may be contemplated when devising the communication system 100.
[0083] Any base station may be a single element, as shown, or multiple elements, distributed in the corresponding RAN, or otherwise. In some implementations, a plurality of RAN nodes coordinate to assist the ED 110 in implementing radio access, and different RAN nodes separately implement different functions of the base station. For example, the RAN node may be a central unit (CU) , a distributed unit (DU) , a CU-control plane (CP) , a CU-user plane (UP) , or a radio unit (RU) etc. The CU and the DU may be separately deployed, or may be included in a same element (i.e., a baseband unit (BBU) ) . The RU may be included in a radio frequency device or a radio frequency unit (i.e., a remote radio unit (RRU) , an active antenna unit (AAU) , or a remote radio head (RRH) ) . In different systems, the CU (or the CU-CP and the CU-UP) , the DU, or the RU may also have different names, but a person skilled in the art may understand meanings thereof. For example, in an open radio access network (ORAN) system, a CU may also be referred to as an open CU (O-CU) , a DU may also be referred to as an open DU (O-DU) , and a CU-CP may also be referred to as an open CU-CP (O-CU-CP) . The CU-UP may also be referred to as an open CU-UP (O-CU-UP) , and the RU may also be referred to as an open RU (O-RU) . Any one of the CU (or the CU-CP, the CU-UP) , the DU, and the RU may be implemented by using a software module, a hardware module, or a combination of a software module and a hardware module.
[0084] Further, communication between different devices / apparatuses in various implementations of this application may refer to direct communication between different devices / apparatuses (that is, no forwarding is required by another device / apparatuses) , or may refer to communication between different devices / apparatuses via another device / apparatus (that is, forwarding is required by another device / apparatus) . Alternatively, it may refer to that a functional unit inside the device / apparatus uses another functional unit in the device / apparatus to communicate with another device / apparatus. In other words, “sending (or transmitting) information to. . . (an ED or a base station) ” in this application may be understood as that a destination endpoint of the information is an ED or a base station. It may include sending / transmitting information directly or indirectly to an ED or a base station. Similarly, “receiving information from. . . (an ED or a base station) ” may be understood as that a source endpoint of the information is an ED or a base station, and may include directly or indirectly receiving information from an ED or a base station. Necessary processing such as format conversion, digital-to-analog conversion, amplification, and filtering may be performed on the information between the source endpoint that sends the information and the destination endpoint. However, the destination endpoint may understand valid information from the source endpoint. Similar descriptions in this application may be understood similarly. Details are not described herein again. In the present disclosure, the terms “send” and “transmit” may be used interchangeably in implementations of this application.
[0085] The ED 110 is used to connect persons, objects, machines, etc. The ED 110 may be widely used in various scenarios including, for example, cellular communications, device-to-device (D2D) , vehicle to everything (V2X) , peer-to-peer (P2P) , machine-to-machine (M2M) , MTC, internet of things (IoT) , virtual reality (VR) , augmented reality (AR) , mixed reality (MR) , metaverse, digital twin, industrial control, self-driving, remote medical, smart grid, smart furniture, smart office, smart wearable, smart transportation, smart city, drones, robots, remote sensing, passive sensing, positioning, navigation and tracking, autonomous delivery and mobility, etc.
[0086] Each ED 110 represents any suitable end user device for wireless operation and may include such devices (or may be referred to but not limited to) as a user equipment (UE) or a user device or a terminal device, a wireless transmit / receive unit (WTRU) , a mobile station, a fixed or mobile subscriber unit, a cellular telephone, a station (STA) , a MTC device, a personal digital assistant (PDA) , a smartphone, a laptop, a computer, a tablet, a wireless sensor, a consumer electronics device, a smart book, a vehicle, a car, a truck, a bus, a train, or an IoT device, wearable devices (such as a watch, a pair of glasses, head mounted equipment, etc. ) , an industrial device, or an apparatus in (e.g. module, modem, or chip) or including the forgoing devices, among other possibilities. Future generation EDs 110 may be referred to using other terms. When an ED 110 performs (or is configured to perform) a method described herein, it may be interpreted as the ED, one or more modules (or units) in the ED, a circuit or chip, or a combination thereof, may perform the method. For example, the circuit or chip may include a modem chip, also referred to as a baseband chip, a system on chip (SoC) including a modem core, or system in package (SIP) ) , and the like, and may be responsible for one or more communication functions in the ED.
[0087] Alternatively, ED 110 may be a device that provides voice / data connectivity for a user, for example, a handheld device with a wireless connection function or a vehicle-mounted device.
[0088] Alternatively, ED 110 may be a wearable device. The wearable device may also be referred to as a wearable smart device, and is a general term for performing intelligent design on daily wear by using a wearable technology, and developing wearable devices, such as glasses, gloves, watches, clothing, and shoes. The wearable device is a portable device that is directly worn on the body or integrated into the clothes or accessories of the user. Wearable devices are not only hardware devices, but also powerful functions through software support, data interaction, and cloud interaction. In a broad sense, the wearable smart device includes full-function, large-size, and complete or partial functions implemented without relying on a smartphone, for example, a smart watch or smart glasses, and only focuses on a specific type of application function, and needs to be used with another device, such as a smartphone. For example, smart bracelets and smart jewelry are used for physical sign monitoring.
[0089] Alternatively, ED 110 may be a terminal device in an Internet of things (IoT) system. The IoT is an important part of future information technology development, and a main technical feature of the IoT is that articles are connected to a network by using a communications technology, so as to implement an intelligent network of man-machine interconnection and object interconnection.
[0090] Each ED 110 connected to TRPs 170a-170b, and / or TRPs 172 can be dynamically or semi-statically turned-on (i.e., established, activated, or enabled) , turned-off (i.e., released, deactivated, or disabled) and / or configured in response to one of more of: connection availability and connection necessity.
[0091] Any ED 110 may be alternatively or additionally configured to interface, access, or communicate with any TRPs 170a, 170b and 172, the Internet 150, the CN 130, the PSTN 140, the other networks 160, or any combination of the preceding. In some examples, the ED 110a may communicate an uplink (UL) and / or downlink (DL) transmission over a terrestrial air interface 190a with the station-TRP 170a. In some examples, the EDs 110a, 110b, 110c, and 110d may also communicate directly with one another via one or more sidelink (SL) air interfaces 190b. In some examples, the ED 110d may communicate an UL and / or DL transmission over a non-terrestrial air interface 190c with the NT-TRP 172.
[0092] An air interface (e.g., 190a, 190b, 190c) generally includes a number of components and associated parameters that collectively specify how a transmission is to be sent and / or received over a wireless communications link between two or more communicating devices such as ED and base station. For example, an air interface may include one or more components defining the waveform (s) , frame structure (s) , multiple access scheme (s) , protocol (s) , coding scheme (s) and / or modulation scheme (s) for conveying information (e.g., data) over a wireless communications link. The air interfaces 190a and 190b may use similar communication technology, such as any suitable radio access technology.
[0093] The non-terrestrial air interface 190c can enable communication between the ED 110d and one or more NT-TRPs 172 via a wireless link or simply a link. For some examples, the link is a dedicated connection for unicast transmission, a connection for broadcast transmission, or a connection between a group of EDs 110 and one or more NT-TRPs 172 for multicast transmission.
[0094] The TRPs 170a-170b, 172 may communicate with one another over one or more air interfaces 190e, 190f using wireless communication links (e.g., radio frequency (RF) , microwave, infrared (IR) , etc. ) or wired communication links. The air interfaces 190e, 190f may utilize any suitable radio access technology, and may be substantially similar to the air interfaces 190a, 190c over which the EDs 110a-110d communicate with one or more of the TRP 170a-170b, 172 or they may be substantially different. For example, the communication system 100 may implement one or more channel access methods, such as code division multiple access (CDMA) , spatial division multiple access (SDMA) , time division multiple access (TDMA) , frequency division multiple access (FDMA) , orthogonal FDMA (OFDMA) , or single-carrier FDMA (SC-FDMA) (also known as discrete Fourier transform spread OFDMA (DFT-s-OFDMA) ) in the air interfaces 190a and 190b. The air interfaces 190a and 190b may utilize other higher dimension signal spaces, which may involve a combination of orthogonal and / or non-orthogonal dimensions.
[0095] The RANs 120a and 120b are in communication with the CN 130 to provide the EDs 110a 110b, and 110c with various services such as voice, data, and other services. The RANs 120a and 120b and / or the CN 130 may be in direct or indirect communication with one or more other RANs (not shown) , which may or may not be directly served by the CN 130, and may or may not employ the same radio access technology as the RAN 120a, the RAN 120b or both. The CN 130 may also serve as a gateway access between (i) the RANs 120a and 120b or the EDs 110a 110b, and 110c or both, and (ii) other networks (such as the PSTN 140, the Internet 150, and the other networks 160) . In addition, some or all of the EDs 110a 110b, and 110c may include functionality for communicating with different wireless networks over different wireless links using different wireless technologies and / or protocols. Instead of wireless communication (or in addition thereto) , the EDs 110a 110b, and 110c may communicate via wired communication channels to a service provider or switch (not shown) , and to the Internet 150. The PSTN 140 may include circuit switched telephone networks for providing plain old telephone service (POTS) . The Internet 150 may include a network of computers and subnets (intranets) or both, and incorporate protocols, such as internet protocol (IP) , transmission control protocol (TCP) , user datagram protocol (UDP) . The EDs 110a 110b, and 110c may be multimode devices capable of operation according to multiple radio access technologies, and incorporate multiple transceivers necessary to support such.
[0096] In addition, the communication system 100 may include a sensing agent (not shown) to manage the sensed data from the ED 110 and / or any one of the TRPs 170 a-170b, 172. In one implementation, the sensing agent may be part of any one of the TRPs 170 a-b, 172. In another implementation, the sensing agent is a separate node that can communicate with the CN 130 and / or the RAN 120 (e.g., any one of the TRPs 170 a-b, 172) .
[0097] FIG. 3 illustrates an example of an apparatus 310 wirelessly communicating with an apparatus 320 in a communication system (e.g., the communication system 100) . The apparatus 310 may be an electronic device (e.g. ED 110) . The apparatus 320 may be a network node (e.g. network node 170) such as T-TRP 170 or a NT-TRP 172. Although there is only one apparatus 310, and one apparatus 320 shown in the figure, the number of apparatus 310 and / or apparatus 320 could be one or more. For example, one ED 110 may be served by only one T-TRP 170 (or one NT-TRP 172) , by more than one T-TRP 170 (or more than one NT-TRP 172) . One ED 110 may be served by one or more T-TRPs 170 and one or more NT-TRPs 172. Similarly, one T-TRP 170 (or one NT-TRP 172) may serve one or more EDs 110.
[0098] The apparatus 310 includes at least one processor 210. Only one processor 210 is illustrated to avoid congestion in the drawing. The apparatus 310 may further include a transmitter 201 and a receiver 203 coupled to one or more antennas 204. Only one antenna 204 is illustrated to avoid congestion in the drawing. One, some, or all of the antennas 204 may alternatively be panels. The transmitter 201 and the receiver 203 may be integrated, e.g. as a transceiver. The transceiver is configured to modulate data or other content for transmission by at least one antenna 204 or network interface controller (NIC) . The transceiver is further configured to demodulate data or other content received by the at least one antenna 204. Each transceiver includes any suitable structure for generating signals for wireless or wired transmission and / or processing signals received wirelessly or by wire. Each antenna 204 includes any suitable structure for transmitting and / or receiving wireless or wired signals. The apparatus 310 may include at least one memory 208. Only the transmitter 201, the receiver 203, the processor 210, the memory 208, and the antenna 204 are illustrated for simplicity, but the apparatus 310 may include one or more other components. In the present disclosure, the transceiver (or the transmitter 201 and / or the receiver203) may be viewed as an interface circuit.
[0099] The memory 208 stores instructions used to perform operations described herein. The memory 208 may further store data used, generated, or collected by the apparatus 310. For example, the memory 208 could store software instructions or modules configured to implement some or all of the functionality and / or implementations described herein and that are executed by one or more processor 210.
[0100] The apparatus 310 may further include one or more input / output devices (not shown) or interfaces. The input / output devices or interfaces permit interaction with a user or other devices in the network. Each input / output device or interface includes any suitable structure for providing information to or receiving information from a user, and / or for network interface communications. Suitable structures include, for example, a speaker, microphone, keypad, keyboard, display, touch screen, etc.
[0101] The processor 210 may perform (or control the apparatus 310 to perform) operations (or methods) described herein as being performed by the apparatus 310. For example, the processor 210 performs or controls the apparatus 310 to perform receiving transport blocks (TBs) , using a resource for decoding of one of the received TBs, releasing the resource for decoding of another of the received TBs, and / or receiving configuration information configuring a resource. In detail, the operation may include those operations related to preparing a transmission for UL transmission to the apparatus 320; those operations related to processing DL transmissions received from the apparatus 320; and those operations related to processing SL transmission to and from another apparatus 310. Processing operations related to preparing a transmission for UL transmission may include operations such as encoding, modulating, transmit beamforming, and generating symbols for transmission. Processing operations related to processing DL transmissions may include operations such as receive beamforming, demodulating and decoding received symbols. Processing operations related to processing SL transmissions may include operations such as transmit / receive beamforming, modulating / demodulating and encoding / decoding symbols. Depending upon the implementation, a DL transmission may be received by the receiver 203, possibly using receive beamforming, and the processor 210 may extract signaling from the DL transmission (e.g. by detecting and / or decoding the signaling) . An example of signaling may be a reference signal transmitted by the apparatus 320. In some implementations, the processor 210 implements the transmit beamforming and / or the receive beamforming based on the indication of beam direction, e.g. beam angle information (BAI) , received from the apparatus 320. In some implementations, the processor 210 may perform operations relating to network access (e.g. initial access) and / or downlink synchronization, such as operations relating to detecting a synchronization sequence, decoding and obtaining the system information, etc. In some implementations, the processor 210 may perform channel estimation, e.g. using a reference signal received from the apparatus 320.
[0102] Although not illustrated, the processor 210 may form part of the transmitter 201 and / or part of the receiver 203. Although not illustrated, the memory 208 may form part of the processor 210.
[0103] The processor 210, the processing components of the transmitter 201, and the processing components of the receiver 203 may each be implemented by the same or different one or more processors that are configured to execute instructions stored in a memory (e.g. in the memory 208) .
[0104] Alternatively, some or all of the processor 210, the processing components of the transmitter 201, and the processing components of the receiver 203 may each be implemented using dedicated circuitry, such as a programmed field-programmable gate array (FPGA) , an application-specific integrated circuit (ASIC) , or a hardware accelerator such as a graphics processing unit (GPU) or an artificial intelligence (AI) accelerator.
[0105] The apparatus 320 includes one or more processors 260 (only one processor 260 is illustrated in the figure) . The apparatus 320 may further include at least one transmitter 252 and at least one receiver 254 coupled to one or more antennas 256. Only one antenna 256 is illustrated to avoid congestion in the drawing. One, some, or all of the antennas 256 may alternatively be panels. The transmitter 252 and the receiver 254 may be integrated as a transceiver. The apparatus 320 may further include at least one memory 258. The apparatus 320 may further include scheduler 253. Only the transmitter 252, receiver 254, processor 260, memory 258, antenna 256 and scheduler 253 are illustrated for simplicity, but the apparatus 320 may include one or more other components. In the present disclosure, the transceiver (or transmitter 252 and / or receiver254) may be viewed as an interface circuit.
[0106] In some implementations, the parts of the apparatus 320 may be distributed. For example, some of the modules of the apparatus 320 may be located remote from the equipment that houses the antennas 256 for the apparatus 320 (thereby also can be viewed as one of more nodes) , and may be coupled to the equipment that houses the antennas 256 over a communication link (not shown) sometimes known as front haul, such as common public radio interface (CPRI) . Therefore, in some implementations, the term apparatus 320 may also refer to nodes on the network side that perform processing operations, such as determining the location of the apparatus 310, resource allocation (scheduling) , message generation, and encoding / decoding, and that are not necessarily part of the equipment that houses the antennas 256 of the apparatus 320. The nodes may also be coupled to other apparatus 320s. In some implementations, the apparatus 320 may actually be a plurality of nodes that are operating together to serve the apparatus 310, e.g. through the use of coordinated multipoint transmissions, or the use of ORAN system as described above in the application.
[0107] The processor 260 performs operations including those related to: preparing a transmission for DL transmission to the apparatus 310, processing an UL transmission received from the apparatus 310, preparing a transmission for backhaul transmission to another apparatus 320, and processing a transmission received over backhaul from another apparatus 320. Processing operations related to preparing a transmission for DL or backhaul transmission may include operations such as encoding, modulating, precoding (e.g. multiple input multiple output (MIMO) precoding) , transmit beamforming, and generating symbols for transmission. Processing operations related to processing received transmissions in the UL or over backhaul may include operations such as receive beamforming, demodulating received symbols, and decoding received symbols. The processor 260 may also perform operations relating to network access (e.g. initial access) and / or DL synchronization, such as generating the content of synchronization signal blocks (SSBs) , generating the system information, etc. In some implementations, the processor 260 also generates an indication of beam direction, e.g. BAI, which may be scheduled for transmission by a scheduler 253 which will be described below. In some implementations, the processor 276 implements the transmit beamforming and / or receive beamforming based on beam direction information (e.g. BAI) received from another apparatus 320. The processor 260 performs other network side processing operations described herein, such as determining the location of the apparatus 310, determining where to deploy another apparatus 320, etc. In some implementations, the processor 260 may generate signaling, e.g. to configure one or more parameters of the apparatus 310 and / or one or more parameters of another apparatus 320. Any signaling generated by the processor 260 is sent by the transmitter 252. In some implementations, the apparatus 320 implements physical layer processing. In some implementations, the apparatus 320 may implement higher layer functions such as functions at the medium access control (MAC) or radio link control (RLC) layer in addition to physical layer processing. The apparatus 320 may further include the scheduler 253 coupled to the processor 260 or integrated in the processor 260. The scheduler 253 may be included within or operated separately from the apparatus 320. The scheduler 253 may schedule UL, DL, SL, and / or backhaul transmissions, including issuing scheduling grants and / or configuring scheduling-free (e.g., “configured grant” ) resources.
[0108] The apparatus 320 may further include a memory 258 storing instructions used to perform operations described herein. The memory 258 may also store data used, generated, or collected by the apparatus 320. For example, the memory 258 could store software instructions or modules configured to implement some or all of the functionality and / or implementations described herein and that are executed by the processor 260.
[0109] Although not illustrated, the processor 260 may form part of the transmitter 252 and / or part of the receiver 254. Also, although not illustrated, the processor 260 may implement the scheduler 253. Although not illustrated, the memory 258 may form part of the processor 260.
[0110] The processor 260, the scheduler 253, the processing components of the transmitter 252, and the processing components of the receiver 254 may each be implemented by the same or different one or more processors that are configured to execute instructions stored in a memory, e.g. in the memory 258.
[0111] Alternatively, some or all of the processor 260, the scheduler 253, the processing components of the transmitter 252, and the processing components of the receiver 254 may be implemented using dedicated circuitry, such as a programmed FPGA, a hardware accelerator (e.g., a GPU or AI accelerator) , or an ASIC.
[0112] When the apparatus 320 is an apparatus (also called as a component) , for example, a communication module, modem, chip, or chipset in a device, it includes at least one processor, and an interface or at least one pin. In this scenario, the transmitter 252 and receiver 254 may be replaced by the interface or at least one pin, where the interface or at least one pin is to connect the apparatus (e.g., chip) and other apparatus (e.g., chip, memory, or bus) . Accordingly, the transmitting information to the apparatus 320 and / or apparatus 310 may be referred to as transmitting information to the interface or at least one pin, and receiving information from the apparatus 320 and / or apparatus 310 may be referred to as receiving information from the interface or at least one pin. The information may include control signaling and / or data.
[0113] The apparatus 320 and / or the apparatus 310 may include other components, but these have been omitted for the sake of clarity.
[0114] It should be noted that “signaling” , as used herein, may alternatively be called control signaling, control message, control information, or message for simplicity. Signaling between a base station (e.g., the TRP 170a-b, 172) and a UE or sensing device (e.g., ED 110) , or signaling between a different UE or sensing device (e.g., between ED 110a and ED 110b) may be carried in physical layer signaling (also called as dynamic signaling) , which is transmitted in a physical layer control channel. For DL, the physical layer signaling may be known as downlink control information (DCI) which is transmitted in a physical downlink control channel (PDCCH) . For UL, the physical layer signaling may be known as uplink control information (UCI) which is transmitted in a physical uplink control channel (PUCCH) . For SL, signaling between different UEs or sensing devices (e.g., between ED 110a and ED 110b) may be known as SL control information (SCI) which is transmitted in a physical sidelink control channel (PSCCH) . Signaling may be carried in a higher layer (e.g., higher than physical layer) signaling, which is transmitted in a physical layer data channel, e.g. in a physical downlink shared channel (PDSCH) for downlink signaling, in a physical uplink shared channel (PUSCH) for uplink signaling, and in a physical sidelink shared channel (PSSCH) for SL signaling. Higher layer signaling may also be called static signaling, or semi-static signaling. Higher layer signaling may be radio resource control (RRC) protocol signaling or media access control -control element (MAC-CE) signaling. Signaling may be included in a combination of physical layer signaling and higher layer signaling.
[0115] It should be noted that in the present disclosure, “information” , when different from “message” , may be carried in one single message, or be carried in more than one separate message.
[0116] Additional details regarding the EDs 110, the T-TRP 170, and the NT-TRP 172 are known to those of skill in the art. As such, these details are omitted here.
[0117] FIG. 4 illustrates an example of an apparatus 410. The apparatus 410 may be a communication device or an apparatus implemented in a communication device such as ED 110 or TRPs 170a-170b, 172. For example, the apparatus implemented in a communication device may be an integrated circuit, which in some contexts may be known by other colloquial names, such as chip, modem, modem chip, baseband chip, or baseband processor. In some implementations, one or more integrated circuits can be packaged into a system-on-chip, a system-in-package, or a multi-chip module. The apparatus may comprise one or more integrated circuits or comprise one or more integrated circuits and other discrete components. In some implementations, the apparatus 410 may be a module in ED 110, or apparatus 310. In some implementations, the apparatus 410 may be a module in one of TRPs 170a-170b, 172, or apparatus 320.
[0118] In an example, the apparatus 410 may include one or more processors / processor cores 411, and an interface circuit 412. The apparatus 410 may further include a memory 413. The one or more processors / processor cores 411 are configured to process signals and execute one or more communication protocols. The memory 413 is configured to store at least a part of corresponding computer program instructions and / or data. In an example, the one or more processors (or processor cores) 411 execute the computer program instructions stored in the memory 413 to implement related operations (for example, inputting, outputting, receiving, and transmitting) in the method implementations disclosed herein. In some implementations, the memory 413 being configured to store the corresponding computer program instructions and / or data may mean that the memory 413 is configured to store all of the corresponding computer program instructions and / or data for execution by the one or more processors / processor cores 411. In some implementations, the memory 413 being configured to store the corresponding computer program instructions and / or data may mean that the memory 413 is configured to store a part of the corresponding computer program instructions and / or data. For example, the part of the corresponding computer program instructions and / or data include computer program instructions and / or data that need to be currently executed by the one or more processors / processor cores 411. Thus, the memory 413 may store different parts of computer program instructions and / or data for a plurality times for the one or more processors (or processor cores) 411 to perform related operations in the method implementations disclosed herein. As a communication interface, the interface circuit 412 is configured to implement communication with another component. For example, the interface circuit 412 may communicate a signal with other apparatus / system such as a radio frequency processing apparatus, or processor system. Optionally, to reduce a load of the processor core, a baseband signal processing circuit 414 may be also disposed to implement processing of at least a part of baseband signals, including signal demodulation, modulation, encoding, decoding, or the like.
[0119] Apparatus 410 may be processor 210 (or 260) in apparatus 310 (or 320) , in some scenario, or included in processor 210 (or 260) in apparatus 310 (or 320) in some scenario. Apparatus 410 may be or include a baseband chip. In some implementations, the apparatus 410 may be independently packaged into a chip. In some implementations, the apparatus 310 (or 320) includes different types of chips. The apparatus 410 may be packaged into a processor chip (for example, a SoC chip or a SIP chip) with the different types of chips. In some implementations, the apparatus 410 may be packaged into a chip with some or all of circuits of a radio frequency processing system that may be further included in the apparatus 310 (or 320) .
[0120] FIG. 5 illustrates example of apparatus 510. Apparatus 510 may include corresponding modules or units configured to implement methods and / or implementations described herein. In some implementations, the apparatus 510 includes a processing unit 512 and a communication unit 513. Optionally, the apparatus 510 may further include a storage unit 511 configured to store apparatus program code (or instructions) and / or data.
[0121] The apparatus 510 may be an ED side apparatus, for example, an ED or a module in an ED, or a circuit or a chip responsible for a communication function in an ED. In some implementations, apparatus 510 may be implemented as apparatus 310, accordingly, the processing unit 512 is implemented as processor 210, the communication unit 513 is implemented as transmitter 201 and / or receiver 203, and the storage unit 511 is implemented as memory 208.
[0122] The apparatus 510 may be a base station side apparatus, for example, a base station or a module in a base station, or a circuit or a chip responsible for a communication function in a base station. In some implementations, apparatus 510 may be implemented as apparatus 320, accordingly, the processing unit 512 is implemented as processor 260 (the scheduler 253 may also be included) , the communication unit 513 is implemented as transmitter 252 and / or receiver 254, and the storage unit 511 is implemented as memory 258.
[0123] In some implementations, when the apparatus 510 is an ED 110 or a module in an ED 110, a function of the apparatus 510 may be implemented by one or more processors. Specifically, the processor may include a modem chip, or a system on chip SoC chip or a SIP chip that includes a modem core. A function of the communication unit 513 may be implemented by a transceiver circuit.
[0124] In some implementations, when the apparatus 510 is a circuit or a chip that is responsible for a communication function in an ED 110, for example, a modem chip, a system on chip SoC chip or a SIP chip that includes a modem core, a function of the processing unit 512 may be implemented by a circuit system that is in the chip and that includes one or more processors or processor cores. A function of the communication unit 513 may be implemented by an interface circuit or a data transceiver circuit on the foregoing chip.
[0125] It may be understood that division into the units in the foregoing apparatus is merely logical function division. Each function may correspond to one functional unit, or two or more functions may be integrated into one functional unit. In actual implementation, all or some of the units may be integrated into one physical entity, or may be distributed in different physical entities. In addition, the foregoing functional units may be implemented in a form of hardware, may be implemented in a form of software, or may be implemented in a form of a combination of hardware and software. Whether a function is performed in a form of hardware or software depends on particular applications and design constraint conditions of the technical solutions. A person skilled in the art may use different methods to implement the described functions for each particular application, but it should not be considered that the implementation goes beyond the scope of this application.
[0126] In an example, a functional unit in any one of the foregoing apparatuses may be configured as one or more integrated circuits for implementing the method implementations disclosed herein, for example, one or more application-specific integrated circuits (application-specific integrated circuits, ASICs) , one or more central processing units (central processing units, CPUs) , one or more microprocessors (microcontroller units, MCUs) , one or more digital signal processors (digital signal processors, DSP) , one or more field programmable gate arrays (field programmable gate arrays, FPGAs) , or a combination of at least two of these integrated circuit forms.
[0127] In an example, the storage unit 511 may include a random access memory, a flash memory, a read-only memory, a programmable read-only memory, an electrically erasable programmable memory, and / or a register.
[0128] A processor, a processor system, an application processor, a baseband processor, a processor circuit, or a processor core may be collectively referred to as a processor. The processor may include one or a combination of a central processing unit (central processing unit, CPU) , a digital signal processor (digital signal processor, DSP) , a microprocessor (microprocessor unit, MPU) , a microcontroller (microcontroller unit, MCU) , a graphics processing unit (graphics processing unit, GPU) , a field programmable gate array (field programmable gate array, FPGA) , an artificial intelligence processor (artificial intelligence processor, AI processor) , or a neural network processing unit (neural network processing unit, NPU) .
[0129] The memory may include one or more of the following storage media: a random access memory (random access memory, RAM) , a static random access memory (static RAM, SRAM) , a dynamic random access memory (dynamic RAM, DRAM) , a phase-change memory (phase-change memory, PCM) , a resistive random access memory (resistive RAM, ReRAM) , a magnetoresistive random access memory (magnetoresistive RAM, MRAM) , a ferroelectric random access memory (ferroelectric RAM, FRAM) , a cache (cache) , a register (register) , a read-only memory (read-only memory, ROM) , a flash memory (flash memory) , an erasable programmable read-only memory (erasable programmable ROM, EPROM) , a hard disk (hard disk) , and the like. In an example, the computer program instructions used to execute the foregoing implementations may be stored in a non-volatile memory, for example, at least a part of the memory (for example, one or more of a ROM, a flash memory, an EPROM, or a hard disk) . When the terminal runs, a part or all of corresponding computer program instructions may be loaded to a memory that has a higher transmission speed with the processor, for example, at least a part of the memory (for example, one or more of a RAM, an SRAM, a DRAM, a PCM, a RERAM, an MRAM, a FRAM, a cache (cache) , or a register) , so that the processor executes the computer program instructions to perform the steps in the method implementations disclosed herein.
[0130] In some wireless systems, such as 4G and 5G etc., there are different types of control signals, including but not limited to physical (PHY) layer control signal, medium access control (MAC) layer control signal, and radio resource control (RRC) layer control signal. Different types of control signals may be used to control different aspects of the system. For example, the PHY layer control signal (also called as PHY control signal) may be used to conduct data transmission scheduling (e.g., using downlink control information (DCI) carried by the PHY layer control signal) , power control, transmission acknowledgement (e.g., using hybrid automatic repeat request acknowledgment (HARQ-ACK) ) , channel feedback (e.g., using channel state information (CSI) feedback) , etc. The MAC layer control signal (also called as MAC control element (MAC CE) ) may be used to control buffer status report (BSR) , timing advance (TA) , discontinuous reception (DRX) , and transmission configuration indicator (TCI) state activation or deactivation, etc. The RRC layer control signal (also called as RRC signal) may be used to carry messages from higher protocol layer which include configurations, parameter settings, link establishment, etc.
[0131] It should be noted that a control signal is a carrier used to transmit a control message from a transmitting end to a receiving end, and control information is effective content included in or indicated by a control message. Therefore, in implementations of this application, the terms “control signal” , “control message” and “control information” may be used interchangeably unless explicitly noted otherwise in a given example or section. Furthermore, in some wireless systems, such as 4G and 5G, control information carried by the PHY layer control signal or the PHY layer control message may be also named as downlink control information (DCI) , and thus term “DCI” may be used to refer to a PHY layer control signal, a PHY layer control message or PHY layer control information in implementations of this application. However, it should be noted that there may be other control information carried by the PHY layer control signal or the PHY layer control message in future wireless systems, and thus term “DCI” used in this application may be any control information carried by a PHY layer control signal or a PHY layer control message, which is not limited to downlink control information in wireless systems.
[0132] Different types of control signals, which are used for different functions and / or missions and / or operations, may have different characteristics.
[0133] The PHY layer control signal may be formed in physical layer processing modules and may be carried by physical control channels. The PHY layer control signal typically has a fixed length of bits, and is therefore used to carry fixed information and / or messages. In other words, payload of a PHY layer control signal and size of the payload are relatively fixed and not easy to expand or change, as both UE and network need to have the same understanding of information carried by each bit, while PHY layer processing could be implemented in hardware as ASIC. There are many advantages of the PHY layer control signal, for example, the PHY layer control signal can be designed to be transmitted faster and more reliably compared to higher layer control signals (e.g. the MAC CE and the RRC signal) , and may not rely on re-transmission mechanism. However, in some wireless systems, such as 4G and 5G, relatively a few kinds of DCI are supported due to the aforementioned reason (fixed size) , and additionally due to blind decoding (BD) consideration. This is because, from perspective of a UE, the UE may not know which kind of DCI is transmitted and which searching space / candidates are actually used to carry the DCI. Thus, the UE may rely on the BD to decode the DCI. If a large number of kinds of DCI are supported, a large number of BD efforts may be required to complete the exhausted searching / detection of DCI. Therefore, it may lead to large amount of power consumption.
[0134] The MAC layer control signal may be formed in MAC layer and carried by the MAC CE. When a MAC CE is passed to PHY layer for processing and transmission, it is treated as data. Therefore, the MAC CE may rely on HARQ mechanism for error detection and / or correction. Furthermore, as the MAC CE is formed and interpreted in MAC layer, it may incur high latency.
[0135] The RRC signal is formed and interpreted in RRC layer using higher layer formats, for example, ASN. 1. The RRC signal may also be flexible as the format and content are formed in higher layer. However, there may be some drawbacks of the RRC signal, some examples of which may be discussed. First, transmitting the RRC signal may have high latency because the RRC signal is formed in RRC layer at one end (UE or network) and needs to be received and interpreted in RRC layer at another end (network or UE) . Second, some designs of the RRC signal may not specify a timing to implement a particular action configured by the RRC signal. For example, if an RRC signal is sent to start an action, although there may be an acknowledgement from the receiving end to inform the transmitting end that the RRC signal is received correctly at the receiving end, there may not be a definite time to enforce the receiving end when to implement or complete the action. This may be because that it may be tedious to define a timing for each RRC signal, and it may give more flexibility for the receiving end to implement the action. However, lack of definite timing to implement the RRC signal may cause ambiguity in timing for both transmitting end and receiving end, which may incur high latency during some transition period. For certain time sensitive services, lack of definite timing to implement the RRC signal may not be tolerable. Third, the RRC signal may also be treated as data when it is passed to lower layer for processing and transmission. Thus, the RRC signal also relies on HARQ and / or automatic repeat request (ARQ) mechanism for error detection and / or correction, which may further incur higher latency and reduce the reliability. A number of RRC based processes may be under improvement, including handover (HO) (e.g., handover as per 4G and / or 5G) , and discontinuous reception (DRX) . For example, to improve the HO process triggered by higher layer signaling, lower layer processing or signaling may be used in lower layer triggered mobility (LTM) feature to replace higher layer processing and RRC based signaling.
[0136] For future wireless system, with more advanced techniques and services emerging, it is desired to have more expandable and harmonized control signaling to support all kinds of performance in terms of latency, reliability, and control needs, from higher layers to lower layers.
[0137] Therefore, how to improve expandability of control messages to support more kinds of functions while meeting requirements such as low latency and high reliability becomes an urgent problem to be solved.
[0138] This application provides various communication methods. The technical solutions may at least allow two-stage physical layer control messages to carry unified control information, where the first stage is used to indicate the second stage, and the second stage is used to carry control information. Thereby, physical layer control message may support large and variable payload of control information, and thus more kinds of functions can be supported by physical layer control message, which has advantages such as low transmission latency and high reliability.
[0139] The methods described in the implementations of this application may resolve at least following technical problems. The first one is that various control signals may have different performance and different mechanism. The second is that higher layer control signals may have ambiguity at the time of implementing. The third one is that various control signaling may be difficult to maintain and expand.
[0140] To solve the above-mentioned technical problems, the methods described in the implementations may provide following solutions. In some solutions and / or implementations, a unified and harmonized control signal structure is provided, where the control signals are categorized into two types. The first type may be used to schedule data transmission, whose function may be similar to some PHY layer signaling in traditional wireless system. The second type may be used to support operations unrelated to scheduling of data transmission (e.g. configuration, activation and deactivation) , whose function may be similar to higher layer signaling (e.g. MAC and RRC) in traditional wireless system. In some solutions and / or implementations, a two-stage structure used to carry the unified and harmonized control signal is provided, where the first stage may be mainly used to indicate the second stage, and the second stage may be mainly used to carry the two types of control signals. In some solutions and / or implementations, a new structure and design of the second type of control signal is further provided.
[0141] In the following, the communication method provided in this application will be described in combination with FIG. 6.
[0142] FIG. 6 is a schematic flowchart of a communication method 600 according to an implementation of this application. The communication method 600 may be applied to the communications system described above.
[0143] At S610, a transmitting apparatus transmits a first physical layer control message indicative of a resource used to transmit a second physical layer control message. Correspondingly, the receiving apparatus receives the first physical layer control message.
[0144] The transmitting apparatus may be a device on the network side, for example, a base station, or a component (for example, a circuit, a chip, or a chip system) in a device on the network side. The receiving apparatus may be a device on the terminal side, for example, a UE, or a component (for example, a circuit, a chip, or a chip system) in a device on the terminal side. Alternatively, the transmitting apparatus may be a device or a component in the device on the terminal side, and the receiving apparatus may be a device or a component in the device on the network side. As an example rather than a limitation, in the following explanation, the transmitting apparatus is a base station and the receiving apparatus is a UE.
[0145] The first physical layer control message is used to indicate the resource used to transmit the second physical layer control message, and thus the second physical layer control message may support large and variable payload of control information. As mentioned above, PHY layer control message has advantages such as low transmission latency, high reliability, and no reliance on re-transmission mechanism, but can only be used for relatively a few functions as payloads have relatively fixed reliance on BD. However, in the case where the resource of the second physical layer control message is indicated by the first physical layer control message, the UE may detect and / or decode the second physical layer control message based on the resource used to transmit the second physical layer control message after decoding the first physical layer control message, without relying on BD. Thus, the second physical layer control message can be easy to expand. Therefore, limitation of the payload of PHY layer control message can be avoided, allowing the base station to control more kinds of functions for the UE by the PHY layer control message to meet requirements such as low latency and high reliability.
[0146] In some implementations, the resource of the second physical layer control message indicated by the first physical layer control message may include one or more of the following: one or more symbols used to transmit the second physical layer control message in time dimension, one or more PRBs used to transmit the second physical layer control message in frequency dimension, and one or more transmission layers used to transmit the second physical layer control message in spatial dimension.
[0147] The first physical layer control message may further indicate a type of the second physical layer control message. As mentioned above, as the second physical layer control message may support variable payload of the control information, the second physical layer control message may be expanded and be used to carry more kinds of control information. Therefore, by categorizing physical layer control messages based on the kind of control information carried in each second physical layer control message and using the first physical layer control message to indicate the type of the second physical layer control message, different types of physical layer control messages may be designed as a unified and / or harmonized structure. Thus, multiple types of control messages can be made easy to maintain.
[0148] In some implementations, the second physical layer control message may be categorized into two types. In some implementations, the second physical layer control message may be categorized into two or more types. The first type may be used to schedule data transmission, whose function may be similar to some PHY layer signaling in traditional wireless system. The second type may be used to support operations unrelated to scheduling of data transmission (e.g. configuration, activation and deactivation) , whose function may be similar to higher layer signaling (e.g. MAC and / or RRC) in traditional wireless system. Alternatively, the first type may be used to support operations unrelated to scheduling of data transmission, and the second type may be used to schedule data transmission. The first type of the second physical layer control message and the second type of the second physical layer control message will be explained in detail in the following implementations and will not be repeated here.
[0149] In some implementations, the first physical layer control message may further indicate other information about the second physical layer control message. For example, as the payload size and / or MCS of the second physical layer control message may vary, the first physical layer control message may further indicate MCS and / or payload of the second physical layer control message to decode the second physical layer control message. It should be noted that, in the case where the MCS is indicated by the first physical layer control message, the UE may determine payload of the second physical layer control message according to the MCS and the resource of the second physical layer control message, that is, the payload may not need to be indicated in the first physical layer control message. In the case where the payload is indicated by the first physical layer control message, the UE may determine MCS of the second physical layer control message according to the payload and the resource of the second physical layer control message, that is, the MCS may not need to be indicated in the first physical layer control message. However, in some possible implementations, the first physical layer control message may indicate both the payload and the MCS, which is not limited in this application.
[0150] For another example, as the second physical layer control message may support multiple kinds of functions, the first physical layer control message may further indicate an identification of the control information carried in the second physical layer control message. The identification may be associated with the content and format of the control information carried in the second physical layer control message. Thus, the UE may be able to interpret the content of control information carried in the second physical layer control message based the identification of the control information.
[0151] In some implementations, the first physical layer control message may further be used to schedule data transmission. For example, the first physical layer control message may schedule data transmission for communication, whose function may be similar to some PHY layer signaling in wireless system such as 4G and / or 5G. For another example, the first physical layer control message may further schedule data transmission for new services and / or applications in future wireless systems, such as AI and sensing.
[0152] At S620, the transmitting apparatus transmits a second type of the second physical layer control message indicative of first control information used to support an operation. Correspondingly, the receiving apparatus receives the second type of the second physical layer control message. In some implementations, the second type of the second physical layer control message may be transmitted (and correspondingly, may be received) on the resource indicated in the first physical layer control message.
[0153] When the first physical layer control message indicates that the second physical layer control message to be transmitted is the second type, a second type of the second physical layer control message may be transmitted after the first physical layer control message.
[0154] The second type of the second physical layer control message may be used to support a function and / or a mission and / or an operation which is not related to scheduling of data transmission. For example, the first control information indicated by the second type of the second physical layer control message may be used to support the operation including one or more of configuration, re-configuration, mode indication, mode switching, dynamic indication, power control command, dynamic request, dynamic sleeping command, dynamic wake-up command, dynamic parameter update, and dynamic parameter change.
[0155] It should be noted that the first control information indicated by the second type of the second physical layer control message may be further used to support other functions and / or missions and / or operations which are not related to scheduling of data transmission, for example, control functions which are supported by RRC signals and / or MAC CE in traditional wireless systems, or control functions for new services and / or applications in future wireless systems, which is not limited in this application.
[0156] In some implementations, the second type of the second physical layer control message may further indicate a time gap to execute the control action or operation. The time gap to execute the control action means a time gap between a time when the control message is transmitted by the base station and a time when the base station may assume that the UE executes the action or operation indicated by the control message. For example, the second type of the second physical layer control message may indicate a time gap between a first time and a second time, where the first time is a time when the second type of the second physical layer control message is transmitted, and the second time is a time when the action or operation is expected to be completed (or, in some implementations, when the action or operation is expected to be initiated) . According to this time gap, the base station may indicate the time for the UE to execute the control action. Thus, ambiguity between the transmitting end and the receiving end can be avoided, and efficiency and performance of control message transmission can be improved.
[0157] In some implementations, the second type of the second physical layer control message may further indicate ACK resource. The ACK resource is a resource indicated by the base station for the UE used to transmit an ACK indicating that the second type of the second physical layer control message is received. According to the ACK resource, the base station (i.e. the transmitting end of the control message) may determine whether the second type of the second physical layer control message is received and / or completed by the UE (i.e. the receiving end of the control message) .
[0158] In some implementations, the second type of the second physical layer control message may further indicate an identification of the first control information. For example, the second type of the second physical layer control message may include a header as the identification. The identification may be associated with the content and format of the first control information carried in the second type of the second physical layer control message, such as a type of the first control information. Thus, the UE may be able to interpret the content of the first control information based on the identification of the first control information indicated by the header.
[0159] It should be noted that, as mentioned above, the first physical layer control message may also be used to indicate the identification of control information carried in the second physical layer control message. In this case, the header as the identification of the first control information may be transmitted in the first physical layer control message instead of the second type of the second physical layer control message. That is, when the header is included in the first physical layer control message, the second type of the second physical layer control message may not include the header.
[0160] Optionally, the header may further be associated with the payload of the first control information. In this case, the header included in the first physical layer control message may further be used to indicate the payload of the second physical layer control message. In this case, the UE could use the indicated payload of the second physical layer control message to decode the second physical layer control message.
[0161] In some implementations, when the first physical layer control message indicates that the second physical layer control message to be transmitted is the first type, a first type of the second physical layer control message may be transmitted after the first physical layer control message. That is, the transmitting apparatus and the receiving apparatus may perform the following at S630.
[0162] Optionally, at S630, the transmitting apparatus transmits a first type of the second physical layer control message indicative of second control information used to schedule data transmission. Correspondingly, the receiving apparatus receives the first type of the second physical layer control message.
[0163] The first type of the second physical layer control message may be used to schedule data transmission. The data transmission scheduled by the first type of the second physical layer control message may include but not be limited to communication data transmission, AI data transmission, and sensing data transmission. The first type of the second physical layer control message may further be used to schedule data transmission for other services and / or applications in future wireless systems, which is not limited in this application.
[0164] The second control information may include but not be limited to MCS used for the data transmission, ID of HARQ process for the data transmission, precoding indication for the data transmission, and HARQ-ACK resource for feedback of the data transmission.
[0165] It should be noted that, as mentioned above, the first physical layer control message may also be used to schedule data transmission. In some implementations, the first type of the second physical layer control message may schedule data transmission jointly with the first physical layer control message, or the first type of the second physical layer control message and the first physical layer control message may schedule data transmission independently.
[0166] According to the above technical solution, two-stage physical layer control messages / signaling carry unified control information, where the first stage control message is used to indicate the transmission of the second stage control message (e.g., one or more of the resources, and MCS and payload used for transmission of the second stage control message) , and the second stage is used to carry control information. The physical layer control messages have advantages such as low transmission latency and high reliability. Furthermore, two-stage control message / signaling design enables the second physical layer control message (i.e. the second stage) to support large and variable payload of control information. Thus, the second physical layer control message may support more kinds of control functions / operations / actions. Thus, expandability of control messages can be improved to support more kinds of functions while meeting requirements such as low latency and high reliability.
[0167] In the following, by taking two-stage and two-type control signals as an example, the structure of control signals provided in this application will be described in combination with FIG. 7 to FIG. 17. It should be noted that term “DCI” used in the following examples may refer to any PHY layer control information, such as downlink control information and other PHY layer control information in future wireless system, e.g., sidelink control information (SCI) . Furthermore, term “DCI” used in the following examples may further refer to a PHY layer control signal or a PHY layer control message / channel carrying the above-mentioned PHY control information.
[0168] For future wireless systems, to overcome the challenges with control signal design, such as, payload, capacity, latency, reliability, decoding complexity, multi-stage (e.g., two-stage) control signals may be designed. FIG. 7 illustrates an example of structure of the two-stage control signals (also named as two-stage DCI in the following examples) . In this design, for example, PHY layer control signals may be designed with two stages. The first stage control signal (denoted by 1st-stage DCI 710) may be DCI with fixed length (payload size) and may be transmitted in a control resource region, for example, a control resource set (CORESET) in 5G. The 1st-stage DCI 710 may carry the information of the second stage control signal (denoted by 2nd-stage DCI 720) , which may include one or more types of the control signals and the resource used to transmit the 2nd-stage DCI 720. Optionally, the 1st-stage DCI 710 may further carry some information for data scheduling. As the 1st-stage DCI 710 may have a fixed length and may be transmitted in a control resource region, for example, in control resource regions as in 4G and / or 5G, the control signal transmission and / or detection mechanism adopted in 4G and / or 5G may be reused for the 1st-stage DCI 710. Thus, no extra complexity is introduced for detection and / or decoding the 1st-stage DCI 710. Furthermore, the 1st-stage DCI 710 may also support backward compatibility as the 1st-stage DCI 710 may be carried by a PDCCH in 4G and / or 5G and transmitted in control resource region, such as, a CORESET in 5G, with other PDCCH (s) .
[0169] The 2nd-stage DCI 720 may support large and variable payload of control signals and thus, can be expanded to support more functions / operations of control. The 2nd-stage DCI 720 may be used to schedule data transmission for communication (e.g., data communication 731) , for example, as seen in 4G and / or 5Gs and may further be used to schedule related data / signals transmission for new services and / or applications, for example, AI and / or sensing services 732 in future wireless networks.
[0170] To expand and accommodate more types of control signals into a PHY control signal to form a more unified control signal, two types of control signals can be designed as illustrated in FIG. 8. the two types of control signals may be carried by the two-stage DCI.
[0171] The first type of the PHY layer control signal (denoted by 1st type of control signal 721) may be used for scheduling data transmission for communication 731 and / or other new services including AI and / or sensing 732. For such type of control signals, one or both of the 1st-stage DCI 710 and the 2nd-stage DCI 720 of the two-stage DCI may be used to carry scheduling information for data transmission. The scheduling information carried in the 1st type of control signal 721 may include scheduling information for data transmission in 4G and 5G such as communication data transmission, and scheduling information for data transmission for new services such as AI data transmission and / or sensing data transmission. The scheduling information may include one or more of the following.
[0172] (1) Resources for data transmission
[0173] The resource for data transmission may include but not be limited to one or more of time domain resource, frequency domain resource, and spatial domain resource.
[0174] (2) MCS used for data transmission
[0175] (3) HARQ process ID
[0176] (4) Precoding indication
[0177] (5) HARQ-ACK resources for feedback
[0178] The second type of the PHY layer control signal (denoted by 2nd type of control signal 722) may be used for one or more of the following functions / operations / actions: configuration, activation and / or deactivation, one time / shot request, and those operations which are not related to data scheduling. It may also be used to carry some control information related to scheduling. This type of control signal may be used to support one or more of the following control functions / operations and / or commands as examples.
[0179] (1) Configuration and / or re-configuration
[0180] For example, the 2nd type of control signal 722 may be used to configure and / or re-configure one or more of some parameters, modes, states, and settings. For another example, the 2nd type of control signal 722 may be used to update and / or change some configurations by higher layer signaling such as RRC.
[0181] (2) Mode indication and / or switching
[0182] For example, the 2nd type of control signal 722 may be used to indicate one or more of power setting mode, sensing mode (including target detection, target shape identification, and environment reconstruction) , MIMO mode, coordinated multi-point operation (CoMP) mode (including NCJT, CJT, etc. ) . The 2nd type of control signal 722 may further be used to switch above-mentioned modes, for example, to switch the sensing mode from environment reconstruction to target detection, or to switch the CoMP mode from NCJT to CJT.
[0183] (3) Dynamic indication
[0184] The dynamic indication may include but not be limited to one or more of indication for activation or deactivation, indication for switching, and indication for triggering. For example, the 2nd type of control signal 722 may be used to activate or deactivate (e.g. on / off) a TRP. For another example, the 2nd type of control signal 722 may be used to activate or deactivate data burst or certain measurement. For another example, the 2nd type of control signal 722 may be used to activate or deactivate a component carrier (CC) .
[0185] (4) Power control command
[0186] (5) Dynamic request
[0187] For example, the 2nd type of control signal 722 may be used to request aperiodic CSI feedback.
[0188] (6) Dynamic sleeping or wake-up command
[0189] (7) Dynamic parameter changes and / or updates
[0190] (8) The time gap to execute the control action
[0191] This time gap, as shown as K-c in FIG. 9, is a time duration between the time when the control signal is transmitted and the time when a network (the transmitting end of the control signal) may assume a UE (the receiving end of the control signal) executes the action indicated by the control signal. For example, assuming that a control signal carries a configuration, the time gap indicated by this control signal may be a time duration between the time when this control signal is transmitted and the time when the configuration is assumed to be received and / or executed by the UE. The time gap may use slot or symbol as a unit. When this time gap is clearly indicated for the executing the action / operation, the ambiguity between the transmitting end and the receiving end can be avoided, and thus the efficiency and performance can be improved.
[0192] (9) ACK resource
[0193] The acknowledgement is sent by the receiving end (e.g., UE) to indicate to the transmitting end (e.g., network) that the control signal is received correctly. The ACK may use 1-bit, for example, “1” may indicate control signal is received correctly and “0” may indicate otherwise. Alternatively, sequences may also be used to indicate if this type of control signal is received correctly or not, for example, receiving one sequence may indicate that control is received and not receiving the sequence may indicate that the control signal is not received or detected. The ACK resource may include a time indication on when ACK is sent by the UE and a time-frequency resource used to carry the ACK signal. The time indication may be a time gap between the time when the control signal is transmitted and the time when the UE transmits the ACK. This time gap, as shown as K-a in FIG. 10, may be equal to or less than K-c shown in FIG. 9, as the UE may need some processing time to interpret or understand the control information and execute it (if needed) after receiving it correctly. Similar to K-c as shown in FIG. 9, K-a in FIG. 10 may also use slot or symbol as a unit. In some implementation, K-a and K-c may be combined as a single indication, to indicate the control signal is received and / or executed.
[0194] Several aspects of the two-type control signals may be designed, as per the following examples.
[0195] Both types of control signals may be transmitted using the 2nd-stage DCI 720 as the 2nd-stage DCI 720 may have more flexibility than the 1st-stage DCI 710 in terms of payload, reliability, etc.
[0196] The 1st type of control signal 721, which may be like the DCI for data scheduling purpose in traditional wireless system such as 4G and 5G, may further indicate scheduling information (may also do so with the 1st-stage DCI 710 jointly) for data transmission. The data transmission may include data transmission for conventional communication 731. The data transmission may further include data transmission for new services like AI and / or sensing 732. Therefore, payload of the 1st type of control signal 721 may be larger compared with the 2nd type of control signal 722. Similar to other PHY layer control signal design, for example, as in 4G and / or 5G, the 1st type of control signal 721 may not have its own detection and / or re-transmission mechanism. However, whether the 1st type of control signal 721 is successfully detected and / or decoded may be determined based on the data transmission scheduled by the 1st type of control signal 721, as data transmission supports HARQ mechanism for acknowledgement and re-transmission.
[0197] The 2nd type of control signal 722 may carry control information for actions / operations such as configuration, mode setup and / or switching, dynamic request to UE for some feedback or reports. Therefore, payload of the 2nd type control signal 722 may be lower compared with the 1st type of control signal 721 used to schedule data transmission. The 2nd type control signal 722 may not support re-transmission mechanism, but acknowledgement of correct detecting and / or decoding may be desired and may be applied. The acknowledgement of correct detecting and / or decoding may reduce the ambiguity at both ends. Role of the 2nd type of control signal 722 may be similar to that of control signaling formed in other protocol layers such as MAC and / or RRC. The 2nd type of control signal 722 may be used to carry some simple control information related to important actions / operations such as configuration, mode setting, dynamic request, etc. Using the 2nd type of control signal 722 to complete the role of control signaling formed in higher protocol layer may obtain improved performance such as lower latency, higher reliability, and reduced ambiguity. Using the 2nd type of control signal 722 to complete the role of control signaling formed in higher protocol layer may further unify and / or simplify the control signal design. Another advantage of using PHY layer to carry the 2nd type of control signal 722 used to be higher layer control signals is that such control signal may be transmitted with or without establishment of higher layer connection, which may be beneficial for some quick and short (small) data transmission before or even without establishment of RRC connection. For example, when the UE is in idle or inactive mode, some control and / or data signal can be transmitted in PHY layer without the need to establish RRC connection.
[0198] The type of control information carried by the 2nd-stage DCI 720 may be indicated by its 1st-stage DCI 710. For example, as shown in FIG. 11, a bit field (denoted by indication of control signal type 710a) may be used in the 1st-stage DCI 710 to indicate whether the 2nd-stage DCI 720 is a 1st type of control signal 721 or a 2nd type of control signal 722. At least the below alternatives for such indication may be implemented.
[0199] Alternative 1: At least one bit may be used as an indication in the 1st-stage DCI 710. For example, “0” may indicate the 2nd-stage DCI 720 is a 1st type of control signal 721, and “1” may indicate the 2nd-stage DCI 720 is a 2nd type of control signal 722.
[0200] Alternative 2: At least two bits may be used to indicate one or more of the following types of control signal as well as the type of data transmissions being scheduled (if applicable) .
[0201] For example, when the 2-bit indication field has a value of “00” , the indication may indicate the 2nd-stage DCI 720 is a 1st type of control signal 721 scheduling communication data transmission 731.
[0202] For example, when the 2-bit indication field has a value of “01” , the indication may indicate the 2nd-stage DCI 720 is a 1st type of control signal 721 scheduling AI data transmission 732.
[0203] For example, when the 2-bit indication field has a value of “10” , the indication may indicate the 2nd-stage DCI 720 is a 1st type of control signal 721 scheduling sensing data transmission 732.
[0204] For example, when the 2-bit indication field has a value of “11” , the indication may indicate the 2nd-stage DCI 720 is a 2nd type of control signal 722.
[0205] Alternative 3: The types of the 2nd-stage DCI 720 may be implicitly indicated by the length of the 1st-stage DCI 710. For example, if the size of the 1st-stage DCI 710 indicating the 1st type of control signal 721 is different from that indicating the 2nd type of control signal 722, after decoding the 1st-stage DCI 710, the UE may determine the type of the 2nd-stage DCI 720.
[0206] For example, if the size of the 1st-stage DCI 710 indicating the 1st type of control signal 721 is X, and the size of the 1st-stage DCI 710 indicating the 2nd type of control signal 722 is Y, then after decoding the 1st-stage DCI 710, if size of the 1st-stage DCI 710 is X, the UE knows the 2nd-stage DCI 720 is a 1st type of control signal 721, otherwise, if size of the 1st-stage DCI 710 is Y, the UE knows the 2nd-stage DCI 720 is a 2nd type of control signal 722.
[0207] In some implementations, more than two types of control signals may be defined, wherein the 2nd stage DCI 720 may include two or more types of control signals. In some implementations, two or more stages of control signals may be designed. In two or more stages of control signals, the first stage may be same as the above explained DCI (e.g., 1st-stage DCI may be a DCI with fixed length (payload size) and may be transmitted in a control resource region, such as, a CORESET in 5G) . The 1st-stage may carry the information of the 2nd-stage DCI and onwards stage control signals (DCI) which may include one or more types of the control signals and the resource used to transmit the 2nd and onwards stage DCI.
[0208] As there may be many control signals that may be supported by using the 2nd type control signal 722, as an example shown in FIG. 12, the format of 2nd type of control signal 722 may start with a header part 722a followed by a control information part 722b, and a cyclic redundancy check (CRC) part 722c may be appended in the end of the 2nd type of control signal 722 for CRC check. The header part 722a may use a bit string and / or bit field as control signal identification. The length of the bit field could be 4-bit, 6-bit or 8-bit, which may support maximum of 16, 32 and 64 different control signals. This bit field length may be configured. The header part 722a and the control information part 722b may be coded together, for example using polar coding and / or LDPC coding, and the CRC part 722c may be calculated based on the coding result and be appended at the end. Alternatively, the header part 722a may be coded separately, for example using block coding, and the control information part 722b may be coded separately, for example using polar coding and / or LDCP coding, then the CRC part 722c may be appended based on the coding result of the control information part 722b. The header index and brief description of each control signal supported by the2nd type of control signal 722 may be specified as the example shown in Table 1. For reference, the payload (e.g., in byes or OCTET) of each control signal may also be included in Table 1.
[0209] Table 1
[0210] At the receiving end, after decoding the 2nd type of control signal 722, the receiving end may be able to interpret the content of received 2nd type of control signal 722 based on information indicated by the header part 722a.
[0211] As the payload size of 2nd type of control signal 722 may vary, the MCS and / or resource used for carrying 2nd type of control signal 722 may vary as well to satisfy the performance requirement under different payload of the control signal and channel condition. For UE to decode the 2nd type of control signal 722, different information about the 2nd type of control signal 722 may be indicated to the UE. At least the below alternatives may be implemented.
[0212] Alternative 1: the MCS and resource used for 2nd type of control signal 722 may be indicated.
[0213] For this purpose, a bit field in the 1st-stage DCI 710 may be used to carry an indication of MCS, as an example shown in FIG. 13. For example, a 2-bit or 4-bit field (denoted by MCS indication for 2nd type of control signal 710b) may be used in the 1st-stage DCI 710 to indicate the MCS used for 2nd type of control signal 722. Such mechanism may be applied for indication of the 1st type of control signal 721 as well
[0214] In addition to MCS indication, the resource used for carrying 2nd type of control signal 722 may vary as well to satisfy the performance requirement under different payload of the control signal and channel condition. Such resource allocation may also be indicated in the 1st-stage DCI 710. To reduce the payload of 1st-stage DCI 710 and simplify the resource allocation, a number of resource allocations can be pre-configured or defined, and a bit field in the 1st-stage DCI 710 may be used to indicate one of them. FIG. 14 to FIG. 16 illustrate some examples of pre-configured or defined resource allocation for 2nd-stage DCI 720. FIG. 14 illustrates an example where the resource allocation may be done in time dimension. For example, the first resource allocation (denoted by RA#0) contains the first two symbols in a slot, the second resource allocation (denoted by RA#1) contains the first four symbols in the slot, and the third resource allocation (denoted by RA#2) contains all 7 symbols in the slot. FIG. 15 illustrates an example of resource allocation in frequency dimension, where RA#0 contains one PRB, RA#1 contains two PRBs, while RA#2 contains four PRBs. FIG. 16 illustrates an example of resource allocation in spatial dimension, where RA#0 contains resources on the first transmission layer (denoted by transmission layer#0) , while RA#1 contains resources on both transmission layer#0 and the second transmission layer (denoted by transmission layer#1) .
[0215] With these pre-configured or defined resource allocation candidates, as an example shown in FIG. 17, a bit field (denoted by RA indication 710c) may be used in the 1st-stage DCI 710 to indicate one resource allocation for 2nd type of control signal 722. For example, a 2-bit field may be used to indicate one resource allocation from, for example, four pre-defined or pre-configured resource allocation candidates. As examples, a value of “00” of the RA indication bit field indicates that RA#0 is used for 2nd type of control signal 722, while a value of “10” of the RA indication bit field indicates that RA#2 is used for 2nd type of control signal 722. That may limit the complexity and payload of the 1st-stage DCI 710 and at the same time, may provide enough flexibly in resource allocation to guarantee the performance of the 2nd type of control signal 722 for different payload and channel condition. Although the illustrated examples only show localized / consecutive resource allocation, distributed resource allocation may also be pre-configured or defined. In addition, for localized resource allocation, resource hopping in either or combined frequency domain and / or time domain and / or spatial domains may also be applied to improve the diversity.
[0216] Even though 2nd type of control signal 722 is used as an example for resource allocation explained above, the similar mechanism of resource allocation may also be applied for 1st type of control signal 721.
[0217] Alternative 2: the payload of 2nd type of control signal 722 and resource used for 2nd type of control signal 722 may be indicated.
[0218] In this alternative, instead of indicating the MCS and resourced used for 2nd type of control signal 722, the payload information of the 2nd type of control signal 722 may be indicated in the 1st-stage DCI 710. For example, the header part 722a as shown in FIG. 12 and Table 1 may be moved from 2nd type of control signal 722 to the 1st-stage DCI 710 indicating a 2nd-type of control signal 722. In such a case, an indication may be used first to indicate UE the 2nd-stage DCI 720 is a 2nd type of control signal 722, not a 1st type of control signal 721. After decoding the 1st-stage DCI 710, the UE may obtain the header information about the 2nd type of control signal 722 and therefore, may know the corresponding payload size of it from some configuration, for example, a configuration of payload size for each 2nd type of control signal 722 as shown in Table 1. For resource allocation, it may be indicated as similar as in alternative 1.
[0219] The communication method according to the implementations of this application is described in detail above with reference to FIG. 6 to FIG. 17 and the apparatuses provided in implementations of this application are described below. The description of apparatus implementations corresponds to the description of the method implementations. Therefore, for content that is not described in detail, refer to the foregoing method implementations. For brevity, details are not described herein again.
[0220] As aforementioned in FIG. 4, the apparatus 410 may be configured to perform actions performed by the network side in the foregoing method implementations. In this case, the apparatus 410 may be the network side or a component that can be configured in the network side.
[0221] The apparatus 410 may implement steps or procedures performed by the network side (or the transmitting apparatus) in FIGS. 6-17 according to implementations of this application. The apparatus 410 may include units configured to perform the method performed by the network side (or the transmitting apparatus) in FIGS. 6-17. In addition, the units in the communication apparatus 410 and the foregoing other operations and / or functions are separately used to implement corresponding procedures in FIGS. 6-17.
[0222] Alternatively, the apparatus 410 may be configured to perform actions performed by the terminal side in the foregoing method implementations. In this case, the apparatus 410 may be the terminal side or a component that can be configured in the terminal side.
[0223] The apparatus 410 may implement steps or procedures performed by the terminal side (or the receiving apparatus) in FIGS. 6-17 according to implementations of this application. The apparatus 410 may include units configured to perform the method performed by the terminal side (or the receiving apparatus) in FIGS. 6-17. In addition, the units in the communication apparatus 410 and the foregoing other operations and / or functions are separately used to implement corresponding procedures in FIGS. 6-17.
[0224] A specific process in which the units perform the foregoing corresponding steps is described in detail in the foregoing method implementations. For brevity, details are not described herein again.
[0225] As aforementioned in FIG. 5, the methods in the foregoing method implementations are executed by the apparatus 510.
[0226] In some implementations, the apparatus 510 may be a network side or a component (e.g., a chip, a circuit, or a processing system) that can be configured in the network side; or the communication apparatus 510 may be a terminal side or a component (e.g., a chip, a circuit, or a processing system) that can be configured in the terminal side.
[0227] In a solution, the apparatus 510 is configured to perform the operations performed by the network side (or the transmitting apparatus) in the foregoing method implementations.
[0228] For example, the processor unit 511 may be configured to perform a processing-related operation performed by the transmitting apparatus in the foregoing method implementations, and the communication unit 513 may be configured to perform a communicating-related (e.g., receiving / transmitting-related) operation performed by the transmitting apparatus in the foregoing method implementations.
[0229] In another solution, the apparatus 510 is configured to perform the operations performed by the terminal side (or the receiving apparatus) in the foregoing method implementations.
[0230] For example, the processor unit 511 may be configured to perform a processing-related operation performed by the receiving apparatus in the foregoing method implementations, and the communication unit 513 may be configured to perform a communicating-related (e.g., receiving / transmitting-related) operation performed by the receiving apparatus in the foregoing method implementations.
[0231] An implementation of this application further provides a system. As shown in FIG. 18, a system 50 includes the transmitting apparatus 10 according to the implementations of this application and the receiving apparatus 30 according to the implementations of this application.
[0232] The transmitting apparatus 10 may be implemented by the apparatus 510 according to the implementations of this application, and the receiving apparatus 30 may be implemented by the apparatus 510 according to the implementations of this application.
[0233] For explanations and beneficial effects of related content of any communication apparatus provided above, refer to a corresponding method implementation provided above. Details are not described herein again.
[0234] An implementation of this application further provides a computer-readable storage medium, and the computer-readable storage medium may store computer instructions used to implement any of the foregoing methods.
[0235] Optionally, the storage medium may be specifically the memory 413.
[0236] An implementation of this application further provides a computer program product including instructions. When the instructions are executed by a computer, the computer is enabled to implement any of the foregoing methods.
[0237] A person of ordinary skill in the art will be aware that, in combination with the examples described in the implementations disclosed in this specification, units and algorithm steps may be implemented by using electronic hardware or a combination of computer software and electronic hardware. Whether the functions are performed by using hardware or software depends on particular applications and design constraint conditions of the technical solutions. A person skilled in the art may use different methods to implement the described functions for each particular application, but it should not be considered that the implementation goes beyond the scope of this application.
[0238] It would be understood by a person skilled in the art that, for the purpose of convenience and brevity, in a detailed working process of the foregoing system, apparatus, and unit, reference may be made to a corresponding process in the foregoing method implementations, and details are not described herein again.
[0239] In the several implementations provided in this application, the disclosed system, apparatus, and method may be implemented in other manners. For example, the described apparatus implementation is merely an example. For example, the unit division is a logical function division and other methods of division may be used in an actual implementation. For example, a plurality of units or components may be combined or integrated into another system, or some features may be ignored or not performed. In addition, the displayed or discussed mutual couplings or direct couplings or communication connections may be implemented by using some communication interfaces. The indirect couplings or communication connections between the apparatuses or units may be implemented in electronic, mechanical, or other forms.
[0240] The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, that is, the parts may be located in one unit, or may be distributed among a plurality of network units. Some or all of the units may be selected based on actual requirements to achieve the objectives of the implementations.
[0241] In addition, function units in the implementations of this application may be integrated into one processing unit, each of the units may exist alone physically, or two or more units may be integrated into one unit.
[0242] When the functions are implemented in the form of a software functional unit and sold or used as an independent product, the functions may be stored in a computer-readable storage medium. The technical solutions of this application may be implemented in the form of a software product. The software product is stored in a storage medium, and includes several instructions for instructing a computer device (which may be a personal computer, a server, a network device, or the like) to perform all or some of the steps of the methods described in the implementations of this application. The foregoing storage medium includes any medium that can store program code, such as a USB flash drive, a removable hard disk, a read-only memory (Read-Only Memory, ROM) , a random access memory (Random Access Memory, RAM) , a magnetic disk, an optical disc or the like.
[0243] In the present disclosure, the terms “a” , “an” and “one” are defined to mean “at least one” , that is, these terms do not exclude a plural number of items, unless stated otherwise.
[0244] In the present disclosure, terms such as “substantially” , “generally” and “about” , which modify a value, condition or characteristic of a feature of an exemplary implementation, should be understood to mean that the value, condition or characteristic is defined within tolerances that are acceptable for the proper operation of this exemplary implementation for its intended application.
[0245] In the present disclosure, unless stated otherwise, the terms “connected” and “coupled” , and derivatives and variants thereof, refer herein to any structural or functional connection or coupling, either direct or indirect, between two or more elements. For example, the connection or coupling between the elements can be acoustical, mechanical, optical, electrical, thermal, logical, or any combinations thereof.
[0246] In the present disclosure, expressions such as “match” , “matching” and “matched” , including variants and derivatives thereof, are intended to refer herein to a condition in which two or more elements are either the same or within some predetermined tolerance of each other. That is, these terms are meant to encompass not only “exactly” or “identically” matching the two elements but also “substantially” , “approximately” or “subjectively” matching the two or more elements, as well as providing a higher or best match among a plurality of matching possibilities.
[0247] In the present disclosure, the expression “based on” is intended to mean “based at least partly on” , that is, this expression can mean “based solely on” or “based partially on” , and so should not be interpreted in a limited manner. More particularly, the expression “based on” could also be understood as meaning “depending on” , “representative of” , “indicative of” , “associated with” or similar expressions.
[0248] In the present disclosure, the terms “system” and “network” may be used interchangeably in implementations of this application. “At least one” means one or more, and “a plurality of” means two or more. The term “and / or” describes an association relationship of associated objects, and indicates that three relationships may exist. For example, A and / or B may indicate the following three cases: Only A exists, both A and B exist, and only B exists, where A and B may be singular or plural. The character “ / ” usually indicates an “or” relationship between associated objects. “At least one of the following items (pieces) ” or a similar expression thereof indicates any combination of these items, including a single item (piece) or any combination of a plurality of items (pieces) . For example, “at least one of A, B, or C” includes A, B, C, A and B, A and C, B and C, or A, B, and C, and “at least one of A, B, and C” may also be understood as including A, B, C, A and B, A and C, B and C, or A, B, and C. In addition, unless otherwise specified, ordinal numbers such as “first” and “second” in implementations of this application are used to distinguish between a plurality of objects, and are not used to limit a sequence, a time sequence, priorities, or importance of the plurality of objects.
[0249] A person skilled in the art should understand that implementations of this application may be provided as a method, an apparatus (or system) , computer-readable storage medium, or a computer program product. Therefore, this application may use a form of a hardware-only implementation, a software-only implementation, or an implementation with a combination of software and hardware. Moreover, this application may use a form of a computer program product that is implemented on one or more computer-usable storage media (including but not limited to a disk memory, an optical memory, and the like) that include computer-usable program code.
[0250] This application is described with reference to the flowcharts and / or block diagrams of the method, the device (system) , and the computer program product according to this application. It should be understood that computer program instructions may be used to implement each process and / or each block in the flowcharts and / or the block diagrams and a combination of a process and / or a block in the flowcharts and / or the block diagrams. The computer program instructions may be provided for a general-purpose computer, a dedicated computer, an embedded processor, or a processor of another programmable data processing device to generate a machine, so that the instructions executed by the computer or the processor of another programmable data processing device generate an apparatus for implementing a specific function in one or more procedures in the flowcharts and / or in one or more blocks in the block diagrams.
[0251] The computer program instructions may alternatively be stored in a computer-readable memory that can indicate a computer or another programmable data processing device to work in a specific manner, so that the instructions stored in the computer-readable memory generate an artifact that includes an instruction apparatus. The instruction apparatus implements a specific function in one or more procedures in the flowcharts and / or in one or more blocks in the block diagrams.
[0252] The computer program instructions may alternatively be loaded onto a computer or another programmable data processing device, so that a series of operations and steps are performed on the computer or another programmable device, so that computer-implemented processing is generated. Therefore, the instructions executed on the computer or another programmable device provide steps for implementing a specific function in one or more procedures in the flowcharts and / or in one or more blocks in the block diagrams.
[0253] It is clearly that a person skilled in the art can make various modifications and variations to this application without departing from the scope of this application. This application is intended to cover these modifications and variations of this application provided that they fall within the scope of protection defined by the following claims and their equivalent technologies.
Claims
1.A communication method, comprising:transmitting a first physical layer control message indicative of a resource used to transmit a second physical layer control message; andtransmitting a second type of the second physical layer control message indicative of first control information used to support an operation, wherein the operation is one or more of: configuration, re-configuration, mode indication, mode switching, dynamic indication, power control command, dynamic request, dynamic sleeping command, dynamic wake-up command, dynamic parameter update, and dynamic parameter change.2.The method according to claim 1, wherein the second type of the second physical layer control message further indicates a time gap between a first time and a second time, wherein the first time is a time when the second type of the second physical layer control message is transmitted, and the second time is a time when the operation is expected to be completed.3.The method according to claim 1 or 2, wherein the second type of the second physical layer control message further indicates a resource used to transmit an acknowledgment (ACK) indicating that the second type of the second physical layer control message is received.4.The method according to any one of claims 1 to 3, wherein the second type of the second physical layer control message further indicates an identification of the first control information.5.The method according to any one of claims 1 to 4, wherein the method further comprises:transmitting a first type of the second physical layer control message indicative of second control information, wherein the second control information is used to schedule data transmission.6.The method according to claim 5, wherein the second control information comprises one or more of: modulation and coding scheme (MCS) used for the data transmission, identity (ID) of hybrid automatic repeat request (HARQ) process for the data transmission, precoding indication for the data transmission, and HARQ acknowledgment (HARQ-ACK) resource for feedback of the data transmission.7.The method according to claim 5 or 6, wherein the data transmission comprises one or more of: communication data transmission, artificial intelligence (AI) data transmission, and sensing data transmission.8.The method according to any one of claims 1 to 7, wherein the resource used to transmit the second physical layer control message comprises one or more of: one or more symbols used to transmit the second physical layer control message in time dimension, one or more physical resource blocks (PRBs) used to transmit the second physical layer control message in frequency dimension, and one or more transmission layers used to transmit the second physical layer control message in spatial dimension.9.The method according to any one of claims 1 to 8, wherein the first physical layer control message further indicates MCS used for the second physical layer control message.10.The method according to any one of claims 1 to 9, wherein the first physical layer control message further indicates payload of the second physical layer control message.11.The method according to any one of claims 1 to 10, wherein the first physical layer control message further indicates third control information, the third control information is used to schedule data transmission, and the data transmission comprises one or more of: communication data transmission, AI data transmission, and sensing data transmission.12.A communication method, comprising:receiving a first physical layer control message indicative of a resource used to transmit a second physical layer control message; andreceiving a second type of the second physical layer control message indicative of first control information used to support an operation, wherein the operation is one or more of: configuration, re-configuration, mode indication, mode switching, dynamic indication, power control command, dynamic request, dynamic sleeping command, dynamic wake-up command, dynamic parameter update, and dynamic parameter change.13.The method according to claim 12, wherein the second type of the second physical layer control message further indicates a time gap between a first time and a second time, wherein the first time is a time when the second type of the second physical layer control message is transmitted, and the second time is a time when the operation is expected to be completed.14.The method according to claim 12 or 13, wherein the second type of the second physical layer control message further indicates a resource used to transmit an acknowledgment (ACK) indicating that the second type of the second physical layer control message is received.15.The method according to any one of claims 12 to 14, wherein the second type of the second physical layer control message further indicates an identification of the first control information.16.The method according to any one of claims 12 to 15, wherein the method further comprises:receiving a first type of the second physical layer control message indicative of second control information, wherein the second control information is used to schedule data transmission.17.The method according to claim 16, wherein the second control information comprises one or more of: modulation and coding scheme (MCS) used for the data transmission, identity (ID) of hybrid automatic repeat request (HARQ) process for the data transmission, precoding indication for the data transmission, and HARQ acknowledgment (HARQ-ACK) resource for feedback of the data transmission.18.The method according to claim 16 or 17, wherein the data transmission comprises one or more of: communication data transmission, artificial intelligence (AI) data transmission, and sensing data transmission.19.The method according to any one of claims 12 to 18, wherein the resource used to transmit the second physical layer control message comprises one or more of: one or more symbols used to transmit the second physical layer control message in time dimension, one or more physical resource blocks (PRBs) used to transmit the second physical layer control message in frequency dimension, and one or more transmission layers used to transmit the second physical layer control message in spatial dimension.20.The method according to any one of claims 12 to 19, wherein the first physical layer control message further indicates MCS used for the second physical layer control message.21.The method according to any one of claims 12 to 20, wherein the first physical layer control message further indicates payload of the second physical layer control message.22.The method according to any one of claims 12 to 21, wherein the first physical layer control message further indicates third control information, the third control information is used to schedule data transmission, and the data transmission comprises one or more of: communication data transmission, AI data transmission, and sensing data transmission.23.A communication apparatus, configured to perform the method according to any one of claims 1 to 11 or 12 to 22.24.The communication apparatus of claim 23, comprising:a transmitting unit, configured to transmit a first physical layer control message indicative of a resource used to transmit a second physical layer control message; and configured to transmit a second type of the second physical layer control message indicative of first control information used to support an operation, wherein the operation is one or more of: configuration, re-configuration, mode indication, mode switching, dynamic indication, power control command, dynamic request, dynamic sleeping command, dynamic wake-up command, dynamic parameter update, and dynamic parameter change.25.The communication apparatus of claim 23, comprising:a receiving unit, configured to receive a first physical layer control message indicative of a resource used to transmit a second physical layer control message; and configured to receive a second type of the second physical layer control message indicative of first control information used to support an operation, wherein the operation is one or more of: configuration, re-configuration, mode indication, mode switching, dynamic indication, power control command, dynamic request, dynamic sleeping command, dynamic wake-up command, dynamic parameter update, and dynamic parameter change.26.The communication apparatus of claim 23, comprising:one or more processors, configured to perform processing step according to any one of claims 1 to 11 or 12 to 22; andan interface circuit, configured to perform transmitting and / or receiving step according to any one of claims 1 to 11 or 12 to 22.27.The communication apparatus of claim 26, wherein the interface circuit comprises one or more transceivers.28.An apparatus, comprising:one or more processors; anda memory storing instructions which, when executed by the one or more processors, cause the apparatus to perform the method of any one of claims 1 to 11 or 12 to 22.29.A communication system, wherein the communication system comprises a first communication apparatus configured to perform the method of any one of claims 1 to 11 and a second communication apparatus configured to perform the method of any one of claims 12 to 22.30.A computer-readable storage medium having instructions stored thereon which, when executed by an apparatus, cause the apparatus to perform the method of any one of 1 to 11 or 12 to 22.31.A computer program product storing instructions which, when executed, cause an apparatus to perform the method of any one of claims 1 to 11 or 12 to 22.32.An apparatus comprising:a processor coupled with a non-transitory computer readable storage medium storing instructions, wherein when the instructions executed by the processor cause the apparatus to:transmit a first physical layer control message indicative of a resource used to transmit a second physical layer control message; andtransmit a second type of the second physical layer control message indicative of first control information used to support an operation, wherein the operation is one or more of: configuration, re-configuration, mode indication, mode switching, dynamic indication, power control command, dynamic request, dynamic sleeping command, dynamic wake-up command, dynamic parameter update, and dynamic parameter change.33.The apparatus according to claim 32, wherein the second type of the second physical layer control message further indicates a time gap between a first time and a second time, wherein the first time is a time when the second type of the second physical layer control message is transmitted, and the second time is a time when the operation is expected to be completed.34.The apparatus according to claim 32 or 33, wherein the second type of the second physical layer control message further indicates a resource used to transmit an acknowledgment (ACK) indicating that the second type of the second physical layer control message is received.35.The apparatus according to any one of claims 32 to 34, wherein the second type of the second physical layer control message further indicates an identification of the first control information.36.The apparatus according to any one of claims 32 to 35, wherein when the instructions executed by the processor further cause the apparatus to:transmit a first type of the second physical layer control message indicative of second control information, wherein the second control information is used to schedule data transmission.37.The apparatus according to claim 36, wherein the second control information comprises one or more of: modulation and coding scheme (MCS) used for the data transmission, identity (ID) of hybrid automatic repeat request (HARQ) process for the data transmission, precoding indication for the data transmission, and HARQ acknowledgment (HARQ-ACK) resource for feedback of the data transmission.38.The apparatus according to claim 36 or 37, wherein the data transmission comprises one or more of: communication data transmission, artificial intelligence (AI) data transmission, and sensing data transmission.39.The apparatus according to any one of claims 32 to 38, wherein the resource used to transmit the second physical layer control message comprises one or more of: one or more symbols used to transmit the second physical layer control message in time dimension, one or more physical resource blocks (PRBs) used to transmit the second physical layer control message in frequency dimension, and one or more transmission layers used to transmit the second physical layer control message in spatial dimension.40.The apparatus according to any one of claims 32 to 39, wherein the first physical layer control message further indicates MCS used for the second physical layer control message.41.The apparatus according to any one of claims 32 to 40, wherein the first physical layer control message further indicates payload of the second physical layer control message.42.The apparatus according to any one of claims 32 to 41, wherein the first physical layer control message further indicates third control information, the third control information is used to schedule data transmission, and the data transmission comprises one or more of: communication data transmission, AI data transmission, and sensing data transmission.43.An apparatus comprising:a processor coupled with a non-transitory computer readable storage medium storing instructions, wherein when the instructions executed by the processor cause the apparatus to:receive a first physical layer control message indicative of a resource used to transmit a second physical layer control message; andreceive a second type of the second physical layer control message indicative of first control information used to support an operation, wherein the operation is one or more of: configuration, re-configuration, mode indication, mode switching, dynamic indication, power control command, dynamic request, dynamic sleeping command, dynamic wake-up command, dynamic parameter update, and dynamic parameter change.44.The apparatus according to claim 43, wherein the second type of the second physical layer control message further indicates a time gap between a first time and a second time, wherein the first time is a time when the second type of the second physical layer control message is transmitted, and the second time is a time when the operation is expected to be completed.45.The apparatus according to claim 43 or 44, wherein the second type of the second physical layer control message further indicates a resource used to transmit an acknowledgment (ACK) indicating that the second type of the second physical layer control message is received.46.The apparatus according to any one of claims 43 to 45, wherein the second type of the second physical layer control message further indicates an identification of the first control information.47.The apparatus according to any one of claims 43 to 46, wherein when the instructions executed by the processor further cause the apparatus to:receive a first type of the second physical layer control message indicative of second control information, wherein the second control information is used to schedule data transmission.48.The apparatus according to claim 47, wherein the second control information comprises one or more of: modulation and coding scheme (MCS) used for the data transmission, identity (ID) of hybrid automatic repeat request (HARQ) process for the data transmission, precoding indication for the data transmission, and HARQ acknowledgment (HARQ-ACK) resource for feedback of the data transmission.49.The apparatus according to claim 47 or 48, wherein the data transmission comprises one or more of: communication data transmission, artificial intelligence (AI) data transmission, and sensing data transmission.50.The apparatus according to any one of claims 43 to 49, wherein the resource used to transmit the second physical layer control message comprises one or more of: one or more symbols used to transmit the second physical layer control message in time dimension, one or more physical resource blocks (PRBs) used to transmit the second physical layer control message in frequency dimension, and one or more transmission layers used to transmit the second physical layer control message in spatial dimension.51.The apparatus according to any one of claims 43 to 50, wherein the first physical layer control message further indicates MCS used for the second physical layer control message.52.The apparatus according to any one of claims 43 to 51, wherein the first physical layer control message further indicates payload of the second physical layer control message.53.The apparatus according to any one of claims 43 to 52, wherein the first physical layer control message further indicates third control information, the third control information is used to schedule data transmission, and the data transmission comprises one or more of:communication data transmission, AI data transmission, and sensing data transmission.
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