Communication method and communication apparatus
The communication method and apparatus enhance resource utilization in wireless systems by reporting channel states from multiple network nodes with overlapping resources, optimizing scheduling and reducing redundancy.
Patent Information
- Application Number
- PCT/CN2024/129732
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2024-08-02
- Filing Date
- 2024-11-04
- Publication Date
- 2026-02-05
AI Technical Summary
The current cell-based configuration mechanism in wireless communication systems is inflexible in utilizing network resources, especially in scenarios with increasing capacity and coverage demands.
A communication method and apparatus that allows terminals to receive and transmit information indicating channel states from multiple network nodes with overlapping time resources, enabling network nodes to optimize resource utilization and scheduling.
Improves flexibility in resource utilization by allowing network nodes to schedule suitable nodes and carriers based on reported channel states, reducing redundant information reporting and enabling power saving modes.
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Figure CN2024129732_05022026_PF_FP_ABST
Abstract
Description
[Corrected under Rule 26, 10.12.2024]COMMUNICATION METHOD AND COMMUNICATION APPARATUS
[0001] The present application claims priority to US patent application No. 63 / 678, 780, entitled "UC-CF based measurement and report" , filed on August 2, 2024 and hereby incorporated by reference in its entirety.TECHNICAL FIELD
[0002] Embodiments of the present application relate to the field of communications, and more specifically, to a communication method and communication apparatus for transmitting first information that indicates channel states.BACKGROUND
[0003] In a wireless communication system, a terminal can get access to the network by selecting a cell to camp on or register. In the subsequent communication process, such as the measurement process, the terminal can be configured based on the cell.
[0004] For telecommunications, as the demand for capacity and coverage continue to increase, increasing number of network nodes are deployed. However, the current cell-based configuration mechanism cannot flexibly utilize the resources under such scenario.
[0005] Therefore, how to improve flexibility of resource utilization becomes an urgent problem to be solved.SUMMARY
[0006] Embodiments of the present application provide a communication method and communication apparatus for transmitting first information that can improve flexibility of resource utilization.
[0007] According to a first aspect, a method is described. The method may be applied at a terminal side, for example, a terminal (e.g., user equipment (UE) ) or a module in a terminal, 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 responsible for a communication function in a terminal. For example, the method is applied to a terminal. In this method, the terminal receives sets of reference signals from two or more network nodes, wherein time resources respectively associated with the sets of reference signals partially or fully overlap, and each of the sets of reference signals includes one or more reference signals; and the terminal transmits the first information, where the first information indicates channel states corresponding to the sets of reference signals.
[0008] According to a second aspect, a method may be applied to a network side, for example, a location server (e.g., a network node) or a component (for example, a circuit, a chip, or a chip system) in a location server on a network side. For example, the method is applied to a location server. In the method, the location server receives first information, where the first information indicates channel states corresponding to sets of reference signals, time resources respectively associated with the sets of reference signals partially and fully overlap, and each of the sets of reference signals comprises one or more reference signals; and the location server processes the first information.
[0009] According to the above solution, two or more network nodes may transmit sets of reference signals to the terminal, making full use of network node resources. Time resources respectively associate with the sets of reference signals partially or fully overlap, that is, the time can be shared by the sets of reference signals. The terminal transmits first information that indicates channel states corresponding to the sets of reference signals, so that the network side can obtain channel states of a plurality of channels corresponding to the two or more network nodes. Thus, the network side may process based on the channel states in a subsequent communication, improving flexibility of resource utilization.
[0010] According to the second aspect, in a possible design, the method further includes: the location server transmits at least one set of the sets of reference signals.
[0011] According to the first aspect or the second aspect, in a possible design, each channel state corresponds to a network node of the two or more network nodes, and each of the two or more network nodes is associated with at least one set of reference signals of the sets of reference signals.
[0012] According to the above solution, the terminal could report channel states from granularity of network nodes, so that the network side could schedule suitable network node (s) to serve the terminal.
[0013] According to the first aspect or the second aspect, in a possible design, each channel state corresponds to a carrier, and the carrier is associated with at least one set of reference signals of the sets of reference signals.
[0014] According to the above solution, the terminal could report channel states from granularity of carriers, so that the network side could schedule suitable carrier (s) to serve the terminal.
[0015] According to the first aspect or the second aspect, in a possible design, each channel state corresponding to a set of carriers, and the set of carriers comprises at least one carrier that is associated with at least one set of reference signals of the sets of reference signals.
[0016] According to the above solution, at least one set of carriers may be predefined or preconfigured, the terminal could report channel states from granularity of set (s) of carriers, so that the network side could schedule suitable set (s) of carrier to serve the terminal.
[0017] According to the first aspect or the second aspect, in a possible design, the set of carriers is associated with at least one public land mobile network (PLMN) .
[0018] According to the above solution, there may be a set of carriers associated with multiple PLMNs. That is, a set of carriers may be shared by multiple operators, and the multiple operators may serve the terminal simultaneously.
[0019] According to the first aspect or the second aspect, in a possible design, the sets of reference signals include two or more sets of reference signals with a quasi co-located (QCL) relationship.
[0020] According to the above solution, two or more sets of reference signals with QCL relation may go through similar channel states in some aspects, so that some similar information may not be reported repeatedly, reducing resource consumption.
[0021] According to the first aspect or the second aspect, in a possible design, the first information is carried in two or more uplink control information (UCI) messages, and the each UCI message correspond to a set of carriers.
[0022] According to the first aspect or the second aspect, in a possible design, each UCI message is scrambled by an identifier of the set of carries.
[0023] According to the above solution, the channel state information may be transmitted based on set (s) of carriers.
[0024] According to the first aspect or the second aspect, in a possible design, the first information is carried in one UCI message.
[0025] According to the first aspect, in a possible design, the transmitting first information, includes: transmitting the first information to a first network node, where the first network node is associated with a first set of carriers, where a serving carrier, an anchor carrier, or an initial access carrier is comprises in the first set of carriers.
[0026] According to the first aspect, in a possible design, the method further includes: receiving second information, where the second information indicates the first network node.
[0027] According to the above solution, the terminal can report to various types of network nodes, and the uplink and downlink can be decoupled.
[0028] According to the first aspect or the second aspect, in a possible design, part or all of the two or more network nodes support at least one power saving mode.
[0029] According to the first aspect, in a possible design, the method further includes: the terminal receives third information, where the third information indicates that a second network node of the two or more network nodes is in a power saving mode; and the terminal stops performing measurements with the second network node.
[0030] According to the second aspect, in a possible design, the method further includes: the location servers transmits third information, where the third information indicates that a second network node of the two or more network nodes is in a power saving mode.
[0031] According to the above solution, a network node can be in a power saving mode which can save energy.
[0032] According to a third aspect, a method may be applied to a network side, for example, a location server (e.g., a network node) or a component (for example, a circuit, a chip, or a chip system) in a location server on a network side. For example, the method is applied to a location server. In the method, the location server generates at least one set of sets of reference signals, wherein time resources associated with the sets of reference signals partially or fully overlap, each of the sets of reference signals comprises one or more reference signals, and the sets of reference signals are from two or more network nodes; and the location server processes based on the first information.
[0033] Various designs and technical effects according to the third aspect can be referred to the descriptions of the first aspect and second aspect.
[0034] According to a fourth aspect, a method is described. The method may be applied at a terminal side, for example, a terminal (e.g., user equipment (UE) ) or a module in a terminal, 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 responsible for a communication function in a terminal. For example, the method is applied to a terminal. In this method, the terminal receives a set of reference signals that comprises one or more reference signals, where the set of reference signals is associated with a set of carriers, and the set of carriers is associated with at least one public land mobile network (PLMN) ; and the terminal transmits first information, where the first information indicates a channel state corresponding to the set of reference signals.
[0035] According to a fifth aspect, a method may be applied to a network side, for example, a location server (e.g., a network node) or a component (for example, a circuit, a chip, or a chip system) in a location server on a network side. For example, the method is applied to a location server. In the method, the location server transmits a set of reference signals that comprises one or more reference signals, wherein the set of reference signals is associated with a set of carriers, and the set of carriers is associated with at least one public land mobile networks (PLMN) ; and the location servers receives first information, where the first information indicates a channel state corresponding to the set of reference signals.
[0036] According to the above solution, there may be a set of carriers associated with multiple PLMNs. That is, a set of carriers may be shared by multiple operators, and the multiple operators may serve the terminal simultaneously.
[0037] According to a sixth aspect, a method may be applied to a network side. The method includes: transmitting, by a first network node, at least one first set of reference signals to a user equipment (UE) ; transmitting, by a second network node, at least one second set of reference signals to the UE, wherein each set of reference signals comprises one or more reference signals, and time resources respectively associated with the at least one first set of reference signals and the at least one second set of reference signals; and receiving, by a third network node, first information from the UE, wherein the first information indicates channel states corresponding to the at least one first set of reference signals and the at least one second set of reference signals.
[0038] According to a seventh 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 using software, may be implemented by using hardware, or may be implemented by using software in combination with hardware.
[0039] According to an eighth 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 using software, may be implemented by using hardware, or may be implemented by using software in combination with hardware.
[0040] According to a ninth aspect, a communication apparatus is described. The communication apparatus has a function of implementing the third aspect. For example, the communication apparatus includes a corresponding module, unit, or means for performing operations in the third aspect. The module, unit, or means may be specifically implemented using software, may be implemented by using hardware, or may be implemented by using software in combination with hardware.
[0041] According to a tenth aspect, a communication apparatus is described. The communication apparatus has a function of implementing the fourth aspect. For example, the communication apparatus includes a corresponding module, unit, or means for performing operations in the fourth aspect. The module, unit, or means may be specifically implemented using software, may be implemented by using hardware, or may be implemented by using software in combination with hardware.
[0042] According to an eleventh aspect, a communication apparatus is described. The communication apparatus has a function of implementing the fifth aspect. For example, the communication apparatus includes a corresponding module, unit, or means for performing operations in the fifth aspect. The module, unit, or means may be specifically implemented using software, may be implemented by using hardware, or may be implemented by using software in combination with hardware.
[0043] According to a twelfth aspect, another communication apparatus is described. The communication apparatus includes a memory and one or more processors. The memory is configured to store part or all of a necessary computer program or instructions for implementing a function in the first aspect or the fourth aspect. One or more processors may execute the computer program or the instructions, and when the computer program or the instructions are executed, the communication apparatus is enabled to implement the method in any possible design or implementation of the first aspect or the fourth aspect.
[0044] 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.
[0045] In some implementations, the communication apparatus may further include a memory.
[0046] 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 an SIP chip that includes a modem module.
[0047] According to a thirteenth aspect, another communication apparatus is described. The communication apparatus includes a memory and one or more processors. The memory is configured to store part or all of a necessary computer program or instructions for implementing a function in the second aspect, the third aspect or the fifth aspect. One or more processors may execute the computer program or the instructions, and when the computer program or the instructions are executed, the communication apparatus is enabled to implement the method in any possible design or implementation of the second aspect.
[0048] 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.
[0049] In some implementations, the communication apparatus may further include a memory.
[0050] The communication apparatus may be a location server, a module in a location server, or a chip responsible for a communication function in a location server, 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.
[0051] According to a fourteenth 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 implementation of the first aspect, and the second communication apparatus is configured to perform the method in any possible implementation of the second aspect.
[0052] According to the fourteenth aspect, in a possible design, the communication system further include a third communication apparatus, and the third communication apparatus is configured to perform the method in any possible implementation of the third aspect.
[0053] According to a fifteenth 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 implementation of the fourth aspect, and the second communication apparatus is configured to perform the method in any possible implementation of the fifth aspect.
[0054] According to a sixteenth 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, the second, the third, the fourth, or the fifth aspect.
[0055] According to a seventeenth 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, the second, the third, the fourth, or the fifth aspect.
[0056] According to an eighteenth aspect, this application provides a system comprising at least one of an apparatus in (or at) a terminal of the present application, or an apparatus in (or at) a network node of the present application.
[0057] According to a ninteenth aspect, this application provides a method performed by a system comprising at least one of an apparatus in (or at) a terminal of the present application, and an apparatus in (or at) a network node of the present application.
[0058] This application encompasses various embodiments, including not only method embodiments, but also other embodiments such as apparatus embodiments and embodiments related to non-transitory computer readable storage media. Embodiments may incorporate, individually or in combinations, the features disclosed herein.DESCRIPTION OF DRAWINGS
[0059] FIG. 1 is a schematic diagram of an application scenario according to this application;
[0060] FIG. 2 illustrates an example communications system 100;
[0061] FIG. 3 illustrates another example of an ED and a base station;
[0062] FIG. 4 illustrates units or modules in a device;
[0063] FIG. 5 illustrates an example of an apparatus 410;
[0064] FIG. 6 illustrates an example of a communication system according to embodiments of this application;
[0065] FIG. 7 is a schematic flowchart of a communication method according to an embodiment of this application;
[0066] FIG. 8 illustrates a schematic diagram of Uni-Cs according to embodiments of this application;
[0067] FIG. 9 illustrates a schematic diagram of Uni-Cs shared by multiple operators according to embodiments of this application;
[0068] FIG. 10 illustrates a schematic diagram of an anchor CC and initial CC according to embodiments of this application;
[0069] FIG. 11 illustrates a first schematic diagram of sets of reference signals according to embodiments of this application;
[0070] FIG. 12 illustrates a schematic diagram of four sets of reference signals according to embodiments of this application;
[0071] FIG. 13 illustrates a third schematic diagram of sets of reference signals according to embodiments of this application;
[0072] FIG. 14 illustrates a first schematic diagram of UCI messages according to embodiments of this application;
[0073] FIG. 15 illustrates a second schematic diagram of a UCI message according to embodiments of this application;
[0074] FIG. 16 illustrates a schematic diagram of uplinks according to embodiments of this application;
[0075] FIG. 17 illustrates a first flow chart of a communication method according to embodiments of this application;
[0076] FIG. 18 illustrates a second flow chart of a communication method according to embodiments of this application;
[0077] FIG. 19 illustrates a third flow chart of a communication method according to embodiments of this application;
[0078] FIG. 20 illustrates a fourth flow chart of a communication method according to embodiments of this application; and
[0079] FIG. 21 illustrates a flow chart of a network node entering a power saving mode according to embodiments of this application.DESCRIPTION OF EMBODIMENTS
[0080] The following describes technical solutions of the present application with reference to the accompanying drawings.
[0081] FIG. 1, is a schematic illustration of an example communication system according to an implementation of the present disclosure, there is shown a communication system 100 that includes a radio access network (RAN) 120, one or more communication electronic devices (EDs) 10a, 110b, 110c, 110d, 110e, 110f, 110g, 110h, 110i, 110j (collectively referred to as 110) , a core network 130, a Public Switched Telephone Network (PSTN) 140, the Internet 150, and other networks 160 . The RAN 120 may include, but is not limited to, a future generation RAN, or a legacy RAN such as, but not limited to, 5th generation (5G) , 4th generation (4G) , 3rd generation (3G) or 2nd generation (2G) radio access network. The RAN 120 may be, for example, an Evolved Universal Mobile Telecommunications System (UMTS) Terrestrial Radio Access Network (E-UTRAN) , a NextGen RAN (NG RAN) , or some other type of RAN. Examples of RAN 120 based on the evolution of telecommunications standards include, but is not limited to, GSM (Global System for Mobile Communications) and CDMA (Code Division Multiple Access) for 2G, UMTS (Universal Mobile Telecommunications System) based on WCDMA (Wideband Code Division Multiple Access) and CDMA2000 for 3G, LTE (Long-Term Evolution) and WiMAX (Worldwide Interoperability for Microwave Access) for 4G, and NR (New Radio) for 5G. In some implementations, The RAN 120 may use any radio access technology (RAT) in the wireless interface between the one or more EDs 110 and the RAN 120. In some implementations, the term “radio access” may refer to the future generation air interface standards which may include both terrestrial networks (TNs) and non-terrestrial networks (NTNs) . These networks will be described in greater detail below in conjunction with various implementations. The one or more communication EDs 110 (also referred to as “user equipment” ) are configured to connect (e.g., communicatively couple) with each other or to one or more network nodes 170a, 170b (collectively referred to as 170) in the RAN 120. The core network (CN) 130 is a part of the communication system 100 and consists of network nodes (e.g., 170a, 170b) which provide support for the network features and telecommunication services. In some implementations, the CN 130 may be dependent on the RAT used in the communication system 100. In other implementations, the CN 130 may be access-agnostic, i.e., the CN 130 may be independent of the RAT used in the communication system 100. There are different types of CN 130, for different 3GPP system generations. For example, the CN 130 is the Evolved Packet Core (EPC) in 4G, also known as the Evolved Packet System (EPS) . In another example, the CN 130 is the 5G Core (5GC) which was developed as part of the 5G System (5GS) . The CN 130 also enables integration of different 3GPP and non-3GPP access types. In some implementations and referring to FIG. 1, the CN 130 also provides the interface towards external networks that may include the PSTN 140, the Internet 150, and other networks 160 in the communication system 100.
[0082] In general, the communication system 100 facilitates interaction between multiple wireless or wired elements. The communication system 100 may transmit different types of content, such as voice, data, video, and / or text, through different transmission methods such as, but not limited to, broadcast, multicast, groupcast, and unicast. Additionally, the communication system 100 operates by allocating and / or sharing resources, such as carrier spectrum bandwidth, among its constituent elements.
[0083] The communication system 100 may provide a wide range of communication services and applications including, but not limited to, 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, Ultra-massive Machine-Type Communication (uMTC) , 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, but not limited to, earth monitoring, remote sensing, passive sensing and positioning, navigation and tracking, autonomous delivery and mobility and the like.
[0084] 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 the terrestrial communication system and the 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 as sub-systems of the communication system 100.
[0085] FIG. 2 illustrates another example communication system 100 according to an implementation of the present disclosure, there is shown the communication system 100 includes EDs 110a, 110b, 110c, 110d (collectively referred to as ED 110) , RANs 120a, 120b, one or more CNs 130, a PSTN 140, the Internet 150, and other networks 160. Additionally, the communication system 100 may also include a non-terrestrial network (NTN) 120c. The RANs 120a and120b may include network nodes 170a and 170b respectively. Examples of network nodes 170a, 170b include base stations, which can be generally referred to as terrestrial network (TN) devices or terrestrial transmit and receive points (T-TRPs) 170a and 170b (collectively referred to as 170) . In this context, the terms "TRP" and "base station" are used interchangeably unless otherwise specified. For simplicity, this disclosure primarily refers to network nodes as base stations; however, unless explicitly stated otherwise, references to TRP are considered non-limiting and interchangeable. 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 a base station 172, which may be generally 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.
[0086] In some implementations, the NT-TRP 172 is not attached to the ground, for example, as 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, but is not limited to, an airborne platform (such as a blimp or an airship) , balloon, drone (such as quadcopter) , and other types of 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 platforms are yet another example of non-terrestrial base stations, including international mobile telecommunication base stations.
[0087] As referred to herein, and unless specified otherwise, a “TRP” may also refer to a T-TRP or an NT-TRP, a “T-TRP” may also refer to a “TN TRP” , and an “NT-TRP” may also refer to an “NTN TRP” . The NTN 120c may be considered a RAN, sharing operational aspects with 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, communicating with the ED 110 via the NTN device. Additionally, there may be an NTN gateway on the ground (referred to as a terrestrial network device) that also functions as a transport layer device facilitating communication 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 within the same device.
[0088] A base station 170 (also referred to as a TRP as stated above) is a network element within a radio access network responsible for radio transmission and reception in one or more cells to or from the ED (such as a user equipment) . In different implementations, the base station 170 may also be known 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 non-terrestrial node, a non-terrestrial network device, a non-terrestrial base station, and 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 combinations thereof. When the base station 170 performs (or is configured to perform) a method described herein, it may be interpreted as the base station itself, one or more modules (or units) in the base station, a circuit or chip, or a combination thereof, performing 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 within the base station.
[0089] The EDs 110a-110d and TRPs 170a-170b, 172 are examples of communication equipment 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 a “coverage area” . The TRPs 170a-170b may be responsible for allocating and / or configuring resources and transmission and / or reception in a set of cell (s) . A cell is a radio network object that can be uniquely identified by a cell identification that is broadcasted over a geographical region or area from base stations associated with the cell. A cell can work in either FDD or TDD mode. A cell may be further divided into cell sectors, and a base station 170a-170b may, for example, employ one or more transceivers to provide services to one or more sectors. Some implementations, may include pico or femto cells if supported by the radio access technology. In some implementations, one or more transceivers could be used for each cell, such as with Multiple-Input Multiple-Output (MIMO) technology. The number of RANs 120a-120b shown is merely an example. Any number of RANs may be contemplated when designing the communication system 100.
[0090] A base station may be a single element, as shown in the figures, or multiple elements distributed throughout the corresponding RAN, or otherwise configured. In some implementations, a plurality of RAN nodes coordinate to assist the ED 110 in implementing radio access, and different RAN nodes separately implement and handle 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 included within the 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 be known by different names, but their functions are understood by person skilled in the art. For example, in an open radio access network (ORAN) system, a CU may be referred to as an open CU (O-CU) , a DU may be referred to as an open DU (O-DU) , and a CU-CP may 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 using a software module, a hardware module, or a combination of a software module and a hardware module.
[0091] Furthermore, communication between different devices / apparatuses in various implementations of this disclosure may refer to direct communication (that is, without the need of forwarding by another device / apparatus) , or may refer to communication (s) between different devices / apparatuses via another device / apparatus (that is, requiring forwarding by another device / apparatus) . Alternatively, such communication (s) may involve one functional unit inside a device / apparatus using another functional unit within the device / apparatus to communicate with another device / apparatus. In other words, phrases such as "sending (or transmitting) information to... (an ED or a base station) " in this disclosure may be understood as a destination endpoint of the information being an ED or a base station, including, sending / transmitting information directly or indirectly to an ED or a base station. Similarly, phrases like "receiving information from... (an ED or a base station) " may be understood as a source endpoint of the information being an ED or a base station, including directly or indirectly receiving information from an ED or a base station. Between the source endpoint that sends the information and the destination endpoint, necessary processing such as, but not limited to, format conversion, digital-to-analog conversion, amplification, and filtering may be performed on the information. However, the destination endpoint may understand valid information from the source endpoint. A similar understanding applies to other descriptions in this disclosure without reiterating details already described. In the present disclosure, the terms "send" and "transmit" may be used interchangeably in different implementations of this disclosure.
[0092] The ED 110 is used to connect people, objects, machines, and other entities. The ED 110 may be widely used in various scenarios including, but not limited to, 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, and autonomous delivery and mobility.
[0093] Each ED 110 represents any suitable end user device for wireless operation and may include such devices (or may be referred to as, but not limited to) 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) , an 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 (such as a module, modem, or chip) in the forgoing devices, among other possibilities. Future generation EDs 110 may be referred to by other terms. When an ED 110 performs (or is configured to perform) a method described herein, it may be interpreted as the ED itself, one or more modules (or units) in the ED, a circuit or chip, or a combination thereof, performing 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.
[0094] 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.
[0095] Any ED 110 may be alternatively or additionally configured to interface, access, or communicate with any of the TRPs 170a, 170b and 172, the Internet 150, the CN 130, the PSTN 140, the other networks 160, or any combination thereof. In some examples, the ED 110a may communicate an uplink (UL) and / or downlink (DL) transmission over a terrestrial air interface 190a with 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 EDs 110a, 110d may communicate using an UL and / or DL transmission over a non-terrestrial air interface 190c with NT-TRP 172.
[0096] An air interface (such as, for example, 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 EDs and base station (s) . 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 (such as, data) over a wireless communications link. The air interfaces 190a and 190b may use similar communication technology, that may include any suitable radio access technology.
[0097] The non-terrestrial air interface 190c can enable communication between the EDs 110a, 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.
[0098] The TRPs 170a-170b, 172 may communicate with one another over one or more air interfaces 190e, 190f using wireless communication links (such as 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 Time Division Multiple Access (TDMA) , Frequency Division Multiple Access (FDMA) , Code Division Multiple Access (CDMA) , Single Carrier Frequency Division Multiple Access (SC-FDMA) , Low Density Signature Multicarrier Code Division Multiple Access (LDS-MC-CDMA) , Non-Orthogonal Multiple Access (NOMA) , Pattern Division Multiple Access (PDMA) , Lattice Partition Multiple Access (LPMA) , Resource Spread Multiple Access (RSMA) , and Sparse Code Multiple Access (SCMA) .
[0099] 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, multimedia, 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 employ different radio access technologies from RAN 120a and / or RAN 120b. The CN 130 may also serve as a gateway access between (i) the RANs 120a and 120b and / or the EDs 110a 110b, and 110c, 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. For example, the EDs 110a 110b, and 110c communicate using different cellular communications protocols, such as, but not limited to, a Global System for Mobile Communications (GSM) protocol, a code-division multiple access (CDMA) network protocol, a Push-to-Talk (PTT) protocol, a PTT over Cellular (POC) protocol, a Universal Mobile Telecommunications System (UMTS) protocol, a 3GPP Long Term Evolution (LTE) protocol, a fifth generation (5G) protocol, a New Radio (NR) protocol, and the like. Instead of wireless communication (or in addition thereto) , the EDs 110a 110b, and 110c may communicate using wired communication channels to a service provider or switch (not shown) , and / or 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) . EDs 110a 110b, and 110c may be multimode devices capable of operation according to multiple radio access technologies, and may incorporate one or multiple transceivers necessary to support such.
[0100] In addition, the communication system 100 may comprise a sensing agent (not shown) to manage the sensed data from ED 110 and / or any one of TRPs 170a, 170b, 172. In one implementation, the sensing agent may be part of any one of TRPs 170a, 170b, 172. In another implementation, the sensing agent is a separate node that can communicate with the CN 130 and / or the RAN 120 (such as any one of TRPs 170a, 170b, 172) .
[0101] FIG. 3 is a schematic illustration showing an apparatus 310 wirelessly communicating with another apparatus 320 within a communication system (e.g., the communication system 100) according to an implementation of the present disclosure. The apparatus 310 may be an electronic device (such as ED 110) . The apparatus 320 may be a network node (e, g., the network node 170) such as T-TRP 170 or an NT-TRP 172. Although only one apparatus 310, and one apparatus 320 are shown in the figure, the number of apparatus 310 and / or number of apparatus 320 can vary, potentially including one or more of each. For example, a single ED 110 may be served by a single T-TRP 170 (or a single NT-TRP 172) , or by multiple T-TRPs 170 (or multiple NT-TRPs 172) . Similarly, a single ED 110 may be served by one or more T-TRPs 170 and one or more NT-TRPs 172. Similarly, a single T-TRP 170 (or a single NT-TRP 172) may serve one or more EDs 110.
[0102] The apparatus 310 may include one or more processors 210. For clarity and to avoid overcrowding the illustration, only a single processor 210 is illustrated. The apparatus 310 may further include a transmitter 201 and a receiver 203 coupled to one or more antennas 204. For clarity, only a single antenna 204 is illustrated. One, some, or all of the antennas 204 may alternatively be panels. In some implementations, the transmitter 201 and the receiver 203 are separate from each other. In other implementations, the transmitter 201 and the receiver 203 may be integrated into a single unit, for example, as a transceiver. The transceiver is configured to modulate data or other content for transmission by the one or more antennas 204 or a network interface controller (NIC) . The transceiver may also be configured to demodulate data or other content received by the one or more antennas 204. A transceiver may include any suitable structure for generating signals for wireless or wired transmission and / or for processing signals received through wireless or wired communication. Each antenna 204 includes any suitable structure for transmitting and / or receiving wireless or wired signals. The apparatus 310 may include a memory 208. In some implementations, the apparatus 310 may include multiple memories 208. Only a single transmitter 201, receiver 203, processor 210, memory 208, and antenna 204 is illustrated for simplicity, but the apparatus 310 may include one or more other components. In some implementations of the present disclosure, the transceiver (or transmitter 201 and / or receiver 203) may be viewed as an interface circuit.
[0103] The memory 208 is configured to store instructions used to perform operations described herein. The memory 208 may also be configured to store data that is used, generated, or collected by the apparatus 310. For example, the memory 208 can store software instructions or modules configured to implement some or all of the functionalities and / or operations described herein and that which are executed by the one or more processors 210.
[0104] The apparatus 310 may further include one or more input / output devices (not shown) or interfaces. The input / output devices or interfaces facilitate interaction with a user or other devices in the network. Each input / output device or interface includes suitable components for facilitating transmission of information to a user and reception of information from a user, and for various network interface communications. Such components may include, but are not limited to, a speaker, microphone, keypad, keyboard, display, touch screen, and the like.
[0105] The processor 210 may be configured to 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 the operations of: a) receiving one or more transport blocks (TBs) , b) using a resource for decoding at least one of the received TBs, c) releasing the resource for decoding another of the received TBs, and / or d) receiving configuration information configuring a resource. Specifically, the operations may include tasks related to: preparing a transmission for UL transmission to the apparatus 320, processing DL transmissions received from the apparatus 320, and handling SL transmission to and from another apparatus 310. Processing operations related to preparing a transmission for UL transmission may include operations such as, but not limited to, encoding, modulating, transmit beamforming, and generating symbols for transmission. Processing operations related to processing DL transmissions may include operations such as, but not limited to, receive beamforming, demodulating and decoding received symbols. Processing operations related to processing SL transmissions may include operations such as, but not limited to, 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 (such as 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, such as beam angle information (BAI) , received from the apparatus 320. In some implementations, the processor 210 may be configured to perform operations relating to network access (such as initial access) and / or downlink synchronization, which includes operations for detecting a synchronization sequence, decoding and obtaining the system information, and the like. In some implementations, the processor 210 may perform channel estimation, such as using a reference signal received from the apparatus 320.
[0106] Although not illustrated, in some implementations, the processor 210 may either be a part of the transmitter 201 or a part of the receiver 203 or a part of both the transmitter 201 and the receiver 203. Although not illustrated, in some implementations, the memory 208 may be a part of the processor 210.
[0107] The processor 210, along with the processing components of the transmitter 201 and the receiver 203 may each be implemented by one or more processors that may the same or different. These processors are configured to execute instructions stored in a memory (such as in the memory 208) .
[0108] The apparatus 320 includes one or more processors 260 (only one processor 260 is illustrated) . The apparatus 320 may further include one or more transmitters 252 and one or more receivers 254 coupled to one or more antennas 256. Only a single antenna 256 is illustrated to avoid clutter in the illustration. One, some, or all of the antennas 256 may alternatively be panels. In some implementations, the transmitter 252 and the receiver 254 are separate from each other. In other implementations, the transmitter 252 and the receiver 254 may be integrated into a single unit such as, for example, as a transceiver. The apparatus 320 may further include a memory 258. In some implementations, the apparatus 320 may include multiple memories 258. The apparatus 320 may further include a scheduler 253. Only a single transmitter 252, receiver 254, processor 260, memory 258, antenna 256 and scheduler 253 are illustrated for simplicity, however the apparatus 320 may include one or more other components. In the present disclosure, in some implementations, the transceiver (or transmitter 252 and / or receiver254) may be viewed as an interface circuit.
[0109] In some implementations, various components of the apparatus 320 may be distributed. For example, some of the modules of the apparatus 320 may be located remotely from the equipment housing the antennas 256 for the apparatus 320 (and therefore also can be viewed as one or more nodes) . These modules, which can be considered as one or more nodes, may be coupled to the equipment that houses the antennas 256 over a communication link (not shown) , sometimes referred to as front haul, such as the Common Public Radio Interface (CPRI) . Therefore, in some implementations, the term apparatus 320 may also refer to network-side nodes that perform processing operations such as, but not limited to, determining the location of the apparatus 310, resource allocation (scheduling) , message generation, and encoding / decoding, and that which are not necessarily part of the equipment that houses the antennas 256 of the apparatus 320. The nodes may also be coupled to other apparatuses 320. In some implementations, the apparatus 320 may actually be a plurality of nodes that are operating together to serve the apparatus 310, such as through the use of coordinated multipoint transmissions, or through the use of ORAN system as described above in the disclosure.
[0110] The processor 260 is configured to perform 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, but not limited to, encoding, modulating, precoding (such as 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, but not limited to, receive beamforming, demodulating received symbols, and decoding received symbols. The processor 260 may also be configured to perform operations relating to network access (such as initial access) and / or DL synchronization, such as generating the content of synchronization signal blocks (SSBs) , generating the system information, and the like. In some implementations, the processor 260 is further configured to generate an indication of beam direction, such as BAI, which may be scheduled for transmission by the scheduler 253 which will be described below. In some implementations, the processor 260 implements the transmit beamforming and / or receive beamforming based on beam direction information (such as BAI) received from another apparatus 320. The processor 260 is configured to perform other network side processing operations described herein, such as, but not limited to, determining the location of the apparatus 310, determining where to deploy another apparatus 320, and the like. In some implementations, the processor 260 may generate signaling data, to configure one or more parameters of the apparatus 310 and / or one or more parameters of another apparatus 320. Any signaling data 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 perform higher layer functions such as those at the Medium Access Control (MAC) or Radio Link Control (RLC) layers in addition to physical layer processing. In the apparatus 320, the scheduler 253 may be coupled to the processor 260 or integrated within the processor 260. In some implementations, the scheduler 253 may be integrated within the apparatus 320 or may be 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 (such as “configured grant” ) resources.
[0111] The apparatus 320 may further include a memory 258 that is configured to store instructions for performing the operations described herein. The memory 258 may also store data that is used, generated, or collected by the apparatus 320. For example, the memory 258 can store software instructions or modules configured to implement some or all of the functionalities and / or implementations described herein and that which are executed by the processor 260.
[0112] Although not illustrated, the processor 260 may be implemented as part of the transmitter 252 and / or a part of the receiver 254. Although not illustrated, in some implementations, the processor 260 may implement the scheduler 253 and the memory 258 may be implemented as part of the processor 260.
[0113] 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 processors that are configured to execute instructions stored in a memory, such as in the memory 258.
[0114] The apparatus 320 and / or the apparatus 310 may include other components, not shown or described herein for the sake of clarity.
[0115] Note that the term “signaling” , as used herein, may alternatively be referred to as control signaling, control message, control information, or message for simplicity. Signaling between a base station (such as the TRP 170a. 170b, 172) and a UE or sensing device (such as ED 110) , or signaling between a different UE or sensing device (such as 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 (such as 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 (such as higher than physical layer) signaling, which is transmitted in a physical layer data channel, such as 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. The higher layer signaling may include 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.
[0116] It should be noted that in the present disclosure, “information” , when different from “message” , may be carried within a single message, or may be carried in multiple separate messages.
[0117] FIG. 4 illustrates an example apparatus 410 according to an implementation of the present disclosure. The apparatus 410 may be a communication device or an apparatus implemented in a communication device such as the ED 110 or the TRPs 170a, 170b, 172. For example, the apparatus 410 implemented in an ED may be an integrated circuit, which in some instances may be referred to as a chip, a modem, a modem chip, a baseband chip, or a 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 410 can include one or more integrated circuits and other discrete components. In some implementations, the apparatus 410 may be a module within the ED 110, or within the apparatus 310. In some implementations, the apparatus 410 may be a module within one of the TRPs 170a, 170b, 172, or the apparatus 320.
[0118] In an example, the apparatus 410 may include one or more processors 411, and an interface circuit 412. The apparatus 410 may further include a memory 413. The one or more processors 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 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 embodiments 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 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 may include computer program instructions and / or data that need to be currently executed by the one or more processors 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 411 to perform related operations in the method embodiments 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 another apparatus or system, such as a radio frequency processing apparatus or another processor. The signal may include or carry information intended as a payload, such as user data, control information, etc. The signal may also include or carry information useful to a receiver, but not necessarily as a payload, such as a pilot signal or reference signal. Communicating the signal may include transmitting the signal to another component or device. Communicating the signal may additionally or alternatively include receiving the signal from another component or device. Transmitting the signal may include outputting the signal to a component or device that is directly or indirectly coupled to the interface circuit 412. Receiving the signal may include inputting or obtaining the signal from a component or device that is directly or indirectly coupled to the interface circuit 412. Optionally, to reduce a load of the one or more processors, 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] The apparatus 410 may be the processor 210 (or 260) within the apparatus 310 (or 320) , in some scenarios, or may be included within the processor 210 (or 260) within the apparatus 310 (or 320) in some scenarios. The apparatus 410 may be a baseband chip or may 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, an SoC chip or an 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 further be included in the apparatus 310 (or 320) .
[0120] FIG. 5 illustrates example apparatus 510 according to an implementation of the present disclosure. The 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 the apparatus 310. The processing unit 512 may be the processor 210. The communication unit 513 may comprise a receiving unit and / or a transmitting unit. The receiving unit and / or the transmitting unit may be the transmitter 201 and / or the receiver 203 respectively. The storage unit 511 may be the 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 apparatus 320. The processing unit 512 may be the processor 260 (the scheduler 253 may also be included) . The communication unit 513 may comprise a receiving unit and / or a transmitting unit. The receiving unit and / or the transmitting unit may be the transmitter 252 and / or the receiver 254 respectively. The storage unit 511 may be the 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 an 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, such as a modem chip, a system on chip (SoC) chip or an SIP chip that includes a modem core -a function of the processing unit 512 may be implemented by a circuit system within the chip which includes one or more processors. A function of the communication unit 513 may be implemented by an interface circuit or a data transceiver circuit on the chip.
[0125] It may be understood that the units in the apparatus 510 may be logical or functional. Each function may correspond to one functional unit, or two or more functions may be integrated into a single functional unit. In actual implementation, all or some of the units may be integrated into a single physical entity, or may be distributed across different physical entities. In addition, the functional units may be implemented in the form of hardware, software, or a combination of hardware and software. Whether a function is implemented in the 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 specific applications, but it should not be considered that the implementation goes beyond the scope of this disclosure.
[0126] In an example, a functional unit in any one of the apparatuses may be configured as one or more integrated circuits for implementing the methods disclosed herein, for example, as one or more application-specific integrated circuits (application-specific integrated circuits, ASICs) , one or more central processing units (CPUs) , one or more microprocessors or microprocessor units (MPUs) , one or more microcontrollers or microcontroller units (MCUs) , one or more digital signal processors (DSPs) , one or more field programmable gate arrays (FPGAs) , or a combination of these.
[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 may be referred to as a processor system, an application processor, a baseband processor, a processor circuit, or a processor core. The processor may include one or a combination of one or more central processing units (CPUs) , one or more digital signal processors (DSPs) , one or more microprocessors (microprocessor units, MPUs) , one or more microcontrollers (microcontroller units, MCUs) , one or more graphics processing units (GPUs) , one or more field programmable gate arrays (FPGAs) , one or more artificial intelligence processors (AI processors) , or one or more neural network processing units (NPUs) .
[0129] Memory or a storage unit may include one or more of the following storage media: a random access memory (RAM) , a static random access memory (static RAM, SRAM) , a dynamic random access memory (dynamic RAM, DRAM) , a 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, a register, a read-only memory (ROM) , a flash memory (flash memory) , an erasable programmable read-only memory (erasable programmable ROM, EPROM) , a hard disk, and the like. In an example, computer program instructions used to execute embodiments may be stored in a non-volatile memory, for example, at least a part of a memory or storage unit (for example, one or more of a ROM, a flash memory, an EPROM, or a hard disk) . When a 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 a memory or a storage unit (for example, one or more of a RAM, an SRAM, a DRAM, a PCM, a RERAM, an MRAM, a FRAM, a cache, or a register) , so that the processor executes the computer program instructions to perform the steps in the method embodiments disclosed herein.
[0130] In a wireless system, a UE gets access to the network by searching for DL synchronization channel first. After it is synchronized on downlink, it could get essential system information from a master information block (MIB) and a system information block (SIB) . It could also get synchronized with network on uplink by going through a random access channel (RACH) procedure. After synchronization on both links are completed, it could set up connection with the network at different levels and start to communicate with the network.
[0131] To enhance both capacity and coverage, one effective solution is to utilize more frequency resources. In 4G LTE more frequency resources are introduced / utilized in the form of carrier aggregation (CA) in the same or neighbor frequency band (s) . In 5G NR, more frequency resources in different frequency range (FR) are also exploited including FR1 (sub-6G Hz) and FR2 (24.25 GHz to 71.0 GHz) . In future wireless system, this trend could continue. With more frequency resources are available to be exploited and utilized, how to manage them become a very critical and practical issue. The conventional carrier aggregation (CA) may not go beyond different frequency band and large number of frequency bands in different FRs would also need a more unified way to manage.
[0132] In 5G NR and earlier wireless system, an area covered by a base station is denoted as a cell and has a cell ID associated with it, and if multiple carriers are also supported in this case, each carrier could be denoted as a separate cell as well and have separate cell ID associated with each of the carrier (as each carrier is separate in frequency domain) . Conventional cellular system provides good solution for wireless communication such that frequency reuse, interference mitigation can be utilized. However, it has some drawbacks that need to be overcome. One of them is the handover (HO) , namely, when UE moves from one cell to the other, it needs HO procedure to hand over the UE from one cell to the other, which may take longer time and incur more latency. In 5G NR system, UE centric no cell (UCNC) concept is considered by some companies but most companies are not clear about its benefits. In the end, some of the mechanism on UCNC was specified but there still exists ambiguity and gap for a complete solution. For example, in Rel-18 low-layer trigger mobility (LTM) is introduced for node switch at lower layer which will reduce the HO latency. However, overall cell concept is still used.
[0133] In future wireless system, the system could be more hybrid and comprise different types of TP nodes including both base station and TRP (either a remote antenna head or a simple transmit / receive point) . Also, the function of each TP could be different, some for coverage enhancement and some for capacity enhancement, the coverage of each TP could be overlapped as well. More component carriers (CC) could also be used to expand the frequency bandwidth. From the energy saving perspective, certain TP could be turn on / off and such behaviors could be quite dynamic to save both network and UE energy without sacrificing the performance. More latency sensitive application also requires more smooth and continuous service even when UE moves around in the system, which makes the conventional HO difficult to handle.
[0134] Notably, in some implementations, the network nodes (e.g., network node 170a, 170b illustrated in FIG. 2) or one or more units / modules of the network nodes that implement the functions may be generally referred to as TPs. The EDs (e.g., ED 110 illustrated in FIG. 2) may be generally referred to as UE. The TPs and UEs may be known by different names. This is not limited to this application.
[0135] Before introducing the communication method provided by this application, additional concepts and terms are defined to ensure a clearer understanding.
[0136] 1) physical resources
[0137] The physical resources may be generally described through at least one of the following dimensions: time dimension, frequency dimension, or spatial dimension.
[0138] The time dimension could be represented by one or more time domain resource units. A time domain resource unit may include, but is not limited to, a symbol, an orthogonal frequency division multiplexing (OFDM) symbol, and a slot. In some embodiments, the time domain unit may be represented by a symbol index, an OFDM symbol index, or a slot index.
[0139] The frequency dimension could be represented by one or more frequency domain resource units. A frequency domain resource unit may include, but is not limited to, a subcarrier, or a subband. In some embodiments, the frequency domain unit may be represented by a subcarrier index, or a subband index. In some embodiments, the frequency domain unit may also be represented by a resource element (RE) index, a resource block (RB) index, or a resource block group (RBG) index. An RE consists of a symbol in a time domain and a subcarrier in a frequency domain, and an RE index could be used to indicate a position of a subcarrier. An RB consists of a slot in the time domain and 12 consecutive subcarriers in the frequency domain. An RB index could be used to indicate positions of 12 subcarriers. An RBG consists of a group of RBs, and an RBG index could be used to indicate positions of a group of subcarriers.
[0140] The spatial dimension could be represented by one or more spatial domain resource units. A spatial domain resource unit may be represented by an antenna port. In the embodiments of this application, an antenna port may be a Tx antenna. The antenna port may be identified by an antenna port index.
[0141] 2) centric-cell free (UC-CF) (also known as UE centric no cell (UCNC) communication system
[0142] The detailed description set forth below in connection with FIG. 6 is intended as a description of another exemplary communication system to which the method embodiments can be applied. It can be called a communication system that is UC-CF or UCNC.
[0143] For the first and most important level, the core idea of UC-CF (UE centric cell free) is given below:
[0144] In some implementations, various types of links are designed in the UC-CF system. In some instances, the data link and control link may be decoupled. For example, for a network node with large coverage area, a control link may be configured between the network node and UE. Thus, control signaling can be transmitted reliably. For another example, for a network with large capacity, a data link may be configured between the network node and UE. In some other instances, a link (which may be referred to as a data-control link) may be configured between a network node and UE, to carry both the control signaling and data signaling. This is not limited to this application.
[0145] Notably, a control link may carry downlink signaling, uplink signaling, or both the downlink signaling and uplink signaling. A data link may carry downlink signaling, uplink signaling, or both the downlink signaling and uplink signaling. Similarly, although not illustrated, a data-control link may carry downlink signaling, uplink signaling, or both the downlink signaling and uplink signaling. This is not limited to this application.
[0146] As shown in FIG. 6, there are 7 TPs (represented by TP#0-6) and 4 UEs (represented by UE#1-4) as examples. The 7 TPs (e.g., TPs may include TRPs and BSs) may have different forms, which may include two Macro base stations (e.g., TP#0 and TP#6) while the others are small stations. In some implementations, the UE can use TP IDs to differentiate them, or use higher layer configured IDs to differentiate them. The Macro BS may have good coverage, so the UL link or DL control link can be sent through the Macro (Main servicing TRP) BS, as shown in FIG. 6 with control link to ensure the robustness. The other TPs may be small stations, for the other links (e.g., data links) , like PDSCH, the UE can receive signals from the small stations. In addition, the link between DL and UL may also be transmitted to different TRPs, different Macro BS, or different small stations. As shown in FIG. 6, one UE (in the middle, e.g., UE#2) can receive and transmit the DL / UL PDSCH / PUSCH through the small station near it (e.g., TP#2) . It could also transmit the uplink signals to the small station (e.g., TP#3) on the right.
[0147] Notably, since a UE may require multiple types of links (e.g., data link, control link, data-control link, etc. ) , different types of links in UC-CF system may be associated with the same or different TPs. In other words, a UE may be served by multiple TPs. A cell-based configuration procedure may not have a good performance.
[0148] 3) power saving mode
[0149] In such communication system, power saving technologies can be applied to the network side. For example, a TP may support at least one power saving mode. A network node in a power saving mode can turn off some functions (e.g., reduce the bandwidth allocation, etc. ) to reduce power consumption. A network node in a power saving mode can turn off some functions (e.g., reduce the bandwidth allocation, etc. ) to reduce power consumption. A power saving mode may be known by different names, for example, a power off mode, a sleep mode, an idle mode, and an inactive mode, etc. They may be generally referred to as power saving mode in this context. This is not limited to this application.
[0150] In some implementations, a network node may support various types of power saving mode. A network node in different types of power saving mode may support different functions. There are two types of power saving modes illustrated in FIG. 6.
[0151] Still referring to FIG. 6, while the above features (e.g., data links, control links) are enabled, the BS could be able to power off or sleep for a while. The power-off level or sleep level could be two different types of power-saving modes. For example, power off may mean a total power-off for some hours. As an example, the BS (e.g., the TP#4, TP#5) found that the service from other TRPs (e.g., the TP#3 and TP#6) could fully fill the need of UEs (e.g., the UE#3 and UE#4) . Another kind of level is sleep level, which means that the BS could fall asleep for a while, like several minutes. As an example, the BS (e.g., the TP#1) may find that the Service at the moment can full-fill the need of the UEs (e.g., UE#1) . As shown in FIG. 6, the two TRPs (TP#4 and TP#5) in the right hand of the figure are powered off, as the control channel can be done by the Macro BS (TP#6) , and the UEs in the field is with small numbers of activated, so Two of all TRPs can choose to power-off for power saving.
[0152] Notably, when a network node enters a power saving mode, it causes the change of communication between the UE and the network side. The change of network nodes is a complicated procedure in conventional communication system.
[0153] 4) anchor carrier, initial access carrier and serving carrier
[0154] An anchor carrier may be set up to carry specific signaling (e.g., control signaling) or provide specific services (e.g., recovering connection from interrupting) . In some instances, an anchor carrier may be a low-frequency carrier, such as 2.6GHz, so that the anchor carrier generally has good coverage. Therefore, the anchor carrier can guarantee the reliable transmission of signaling, and UE may always access the anchor carrier.
[0155] An initial access carrier may be a carrier to which the UE initially accesses (or initial attaches) .
[0156] A serving carrier may be set up to carry specific signaling (e.g., data) . In some instances, a serving carrier may have good capacity, so that a large amount of data can be carried in the serving carrier.
[0157] Notably, the anchor carrier, initial access carrier, and serving carrier may be the same carrier or different carriers. For example, the anchor carrier and the initial access carrier may be the same carrier, and the serving carrier is another carrier. Since the anchor carrier may be the most guaranteed carrier, the UE can access the anchor carrier first when it initially accesses, or wakes up from sleep mode, or recovers from interruption. The UE may then be configured by the network side to other carriers for further connection after the connection is established with the anchor CC. This avoids reconnecting in a huge number of carriers, which may take a long time. This is not limited to this application.
[0158] In UC-CF system, in some implementations, a network node may be associated with one or more carriers, and it could use these carriers to serve UE. In some instances, a network node (e.g., TP#0 and TP#1 illustrated in FIG. 6) may be associated with at least one anchor carrier and at least one serving carrier. This is not limited to this application.
[0159] In 5G NR, the information and instructions for measurement and reporting are signaled by the physical cell on which the UE is camped.
[0160] Even though CA was introduced and supported since 4G LTE, it is limited by frequency band (s) as only carries in the same or neighboring frequency bands can be aggregated. In 5G NR Rel-18, the LTM is introduced and specified, however, the overall cell layout is still in the specification and early UE still needs to be bounded by cell layout and not get benefits from this lower layer triggered mobility. In future wireless system, with more and more frequency resources needs to be exploited and support together, and with more hybrid system deployed, and with more stringent requirement on power saving to be met, a more unified solution needs to be introduced for carrier management and TP resource managements.
[0161] Notably, the above presents a simplified description of some related technologies to provide a basic understanding. The various concepts presented throughout this disclosure may be implemented across a broad variety of telecommunication systems, network architectures, and communication standards. The actual telecommunication standard, network architecture, and / or communication standard used will depend on the specific application and the overall design constraints imposed on the system.
[0162] In order to make full use of increasing network node resources, a flexible network node resource management method, which is different from a cell-based method, needs to be proposed. The network node resource management method may involve UE’s capability, measurement configuring and measurement, and more specifically, a method for measurement is proposed in this application.
[0163] The method can be applied to various types of communication systems (e.g., any one of communication system described in FIGs. 1 to 6) . For a terminal side, the method can be applied to a terminal (e.g., UE) or a module in a UE, a circuit or a chip (for example, a modem chip, also referred to as a baseband chip, or a SoC chip or a SIP chip that includes a modem core responsible for a communication function) in a UE. In the examples set forth below, the method can be applied to a UE on terminal side. For a network side, a location server (e.g., a network node) or a component (for example, a circuit, a chip, or a chip system) in a location server on a network side. In the examples set forth below, the method can be applied to at least one network node on network side.
[0164] FIG. 7 is a schematic flowchart of a communication method according to an embodiment of this application.
[0165] At step 710, a UE receives sets of reference signals from two or more network nodes, wherein time resources respectively associated with the sets of reference signals partially or fully overlap, and each of the sets of reference signals includes one or more reference signals.
[0166] At step 720, the UE transmits the first information, where the first information indicates channel states corresponding to the sets of reference signals.
[0167] In this application, two or more network nodes may transmit sets of reference signals to the terminal, making full use of network node resources. Time resources respectively associate with the sets of reference signals partially or fully overlap, that is, the time can be shared by the sets of reference signals. The terminal transmits first information that indicates channel states corresponding to the sets of reference signals, so that the network side can obtain channel states of a plurality of channels corresponding to the two or more network nodes. Thus, the network side may process based on the channel states in a subsequent communication, improving flexibility of resource utilization.
[0168] Time resources respectively associate with the sets of reference signals partially or fully overlap. In other words, at least two of the sets of reference signals are for simultaneous transmission. The simultaneous transmission in this application may refer to: at least one time unit (or time period) is used for the two or more network nodes to send signaling to the same UE.The time unit (or time period) may be various granularity, for example, a symbol, a slot or other defined time duration. For example, when the time unit is a symbol granularity, reference signal set#a may be transmitted using symbol#1, symbol#2, symbol#3 and symbol#4, and reference signal set#b may be transmitted using symbol#1 and symbol#2. Notably, the overlapped sets of reference signals may be associated with the same network node or different network nodes. For example, the network node#1 may transmit reference signal set#a and reference signal set#b simultaneously. For another example, the network node#1 may transmit reference signal set#a and the network node#2 may transmit reference signal set#b simultaneously. This is not limited to this application.
[0169] Notably, the terms “a set of reference signals” and “a reference signal set” may be used interchangeably in different embodiments of this application.
[0170] In some implementations, the first information that indicates channel states may be referred to as channel state information (CSI) . The CSI may include related information such as a channel quality indicator (CQI) , a precoding matrix indicator (PMI) , a layer indicator (LI) , a rank indicator (RI) , CSI-RS resource indicator (CRI) , synchronization signal / physical broadcast channel (SS / PBCH) block resource indicator (SSBRI) , layer 1-reference signal receiving power (L1-RSRP) and layer 1-signal to interference plus noise ratio (L1-SINR) . The CSI is used to reconstruct or precode the downlink channel. For example, UE obtains an estimated CSI value according to the received set of reference signals, selects a precoding vector from a codebook according to the estimated CSI value, and feedback related to the index of the precoding vector to the network side; and the network side determines a CSI reconstruction value with reference to the index of the precoding vector. The CSI reconstruction value can be the CSI closest to the true value of the CSI that can be obtained by the network side.
[0171] The set of two or more network nodes may include various types of network nodes, for example, a network node responsible for control link (e.g., TP#0, TP#6 described in FIG. 6) , a network node responsible for data link (e.g., TP#2, TP#3 described in FIG. 6) , a network node responsible for uplink, a network node responsible for downlink, a network node responsible for both downlink and uplink, etc. This is not limited to this application.
[0172] In some implementations, at step 710, the UE may receive sets of reference signals from two or more network nodes. At step 720, the UE may transmit the first information to part or all of the two or more network nodes, or it may transmit the first information to other one or more network nodes. For ease of description, a network node to which the first information is transmitted is referred to as a first network node in general. The first network node may be pre-defined based on the application scenario; or be determined by the UE as a function of parameters that are known by the UE; or be signaled, e.g., in physical broadcast channel (PBCH) , in physical layer control signaling such as DCI, in radio resource control (RRC) signaling or in the medium access control (MAC) layer; or a combination thereof. In some instances, optionally, before step 720, the UE may further perform 730.
[0173] Optionally, at step 730, the UE receives second information, where the second information indicates the first network node to which the first information is transmitted. For example, the second information may be included in PBCH, DCI, RRC, MAC or a combination thereof. This is not limited to this application.
[0174] Notably, the first network node may be one of the two or more network nodes (who transmit the sets of reference signals) or not. Similarly, the network node who transmits the second information may be one of the two or more network nodes or not. The network node who transmits the second information and the network node who receives the first information may be the same one or not. This is not limited to this application.
[0175] Notably, due to the flexibility between the network nodes, the first network node (who receives the first information) and at least one network node (who processes the first information, e.g., configures / schedules based on the first information in a subsequent communication) can be the same or different. Therefore, in embodiments of this application, the term “network side” is used to generally refer to one or more network nodes. The specific network node is depended on the specific actions performed by the network side and the application scenarios. This is not limited to this application.
[0176] In some implementations, one or more sets of carriers may be defined. Each set of carriers may include one or more carriers. A carrier in a set of carriers may be also referred to as a component carrier (CC) or other similar expressions. A set of carriers may be also referred to as a group of carriers, a group of CCs, a union carrier (Uni-C) , a union CC (Uni-CC) or other similar expressions. Correspondingly, in some examples, without limitation, an ID of a carrier may be represented by a CC ID, and an ID of a set of carriers may be represented by Uni-C ID, Uni-CC ID or other expressions. Exemplary, a Uni-C#1 may be with an index of Uni-C ID1, a Uni-C#2 may be with an index of Uni-C ID2 and a Uni-C#3 may be with an index of Uni-C ID3.
[0177] A Uni-C may include various types of carriers. In some instances, a Uni-C consists of a set (group) of CCs, and may be formed from one or more CCs from one or more spectrum ranges, e.g., frequency range (FR) 1, FR2, FR3, etc. For example, in 5G new radio (NR) , different frequency ranges have been defined such as FR1 and FR2, where FR1 defines frequency range of 410 MHz to 7125 MHz, and this is often referred to as "sub-6 GHz" range; FR2 defines frequency range of 24.25 GHz to 52.6 GHz, and this is often referred to as "mmWave" range. In future network, a mid-band frequency range may be proposed with spectrum spanning from 7 GHz to 15 GHz, and this may be referred to as centimeter wave or “cmWave” range. As a result, one or more Uni-Cs can be defined or configured based on CCs from FR1, FR2 and FR3. For example, CCs in each FR may form one Uni-C; CCs in neighbor FRs may form one Uni-C.
[0178] For example, FIG. 8 illustrates a schematic diagram of Uni-Cs according to embodiments of this application. For example, the communication system may define Uni-C#1, Uni-C#2 and Uni-C#3, where CCs in Uni-C#1 are located in FR1, CCs in Uni-C#2 are located in FR2, and CCs in Uni-C#3 are located in FR3. In these instances, a Uni-C may be identified by the identifier of the corresponding FR. In some other instances, although not illustrated, a Uni-C may include CCs located in different FRs, this is not limited to this application.
[0179] In order to further manage the frequency band and use the diversity of different operators, and enable better manage and power saving, such solutions are proposed below:
[0180] A unified carrier (Uni-C) may comprise all CCs or part of CCs from one frequency range. In FIG. 8, there are three frequency ranges: FR1, FR3, and FR2, where FR1 may include k CCs, identified by cci, i=1, 2, …, k (or alternatively, indexed from 0, 1, …, k-1) , FR3 may include m CCs, identified by ccj, j=1, 2, …, m (or alternatively, indexed from 0, 1, …, m-1) , and FR2 may include n CCs, identified by ccl, l=1, 2, …, n (or alternatively, indexed from 0, 1, …, n-1) , where k, m and n are positive integers. CCs in each FR may form one unified carrier, identified by Uni-C1, Uni-C2 and Uni-C3, respectively.
[0181] It is noted that CCs in one FR may form one or more unified carriers. In some implementations, one unified carrier may consist of CCs from one or more FRs.
[0182] In some implementations, each of the at least one set of carriers is associated with at least one public land mobile network (PLMN) . There may be a set of carriers associated with multiple PLMNs. That is, a set of carriers may be shared by multiple operators, where an operator may be assigned / associated with a PLMN, and the multiple operators may serve the terminal simultaneously.
[0183] CCs in one Uni-C may be used for at least one of shared carriers or dedicated carriers (e.g., operator specific) . In some implementations, one or more Uni-Cs or CCs may be used or configured for a support of communication coverage, referred to as coverage Uni-C or coverage CCs. In some implementations, one or more Uni-Cs or CCs may be used or configured for a support of communication capacity, referred to as capacity Uni-C or capacity CCs. Moreover or alternatively, coverage Uni-C can be operator specific and capacity Uni-C can be inter-operator shared.
[0184] For example, FIG. 9 illustrates a schematic diagram of Uni-Cs shared by multiple operators according to embodiments of this application.
[0185] For unified carriers and associated CCs as defined or configured above, the frequency resources may be dedicated used or shared among different operators or radio access technologies (RATs) such as 5G, future technology, etc. For example as shown in FIG. 9, part of CCs in FR1 have dedicated usages among different operators such as carrier operator 1, carrier operator 2, and other part of CCs in FR1 consists one unified carrier (identified by Uni-C1) that are shared by different (L is a positive integer, L>1) carrier operators. Moreover, all CCs in FR3 consist of another unified carrier (identified by Uni-C2) , which is used as shared resources among different (L>1) carrier operators.
[0186] In some implementations, a Uni-C may include an anchor carrier (anchor CC) . The Uni-C which includes the anchor CC may be referred to as an anchor Uni-C. In some implementations, a Uni-C may include an initial access carrier (initial access CC) . The Uni-C which includes the initial access carrier may be referred to as an initial access Uni-C. In some implementations, a Uni-C may include a serving carrier (serving CC) . The Uni-C which includes the serving CC may be referred to as a serving Uni-C.
[0187] Notably, the anchor CC, initial CC and serving CC may be included in the same Uni-C or different Uni-Cs. For example, the initial access CC is included in Uni-C#1, and the anchor CC and serving CC are included in Uni-C#2. This is not limited to this application.
[0188] For example, FIG. 10 illustrates a schematic diagram of an anchor CC and initial CC according to embodiments of this application.
[0189] So based on the information given before, we can know that Uni-Cs is a concept of sets of carriers, each Uni-C has its own ID, different Operator has its own Uni-C. In some instances, there may be some shared Uni-Cs be used for different Operators. When a UE powers on, it will find an operator through a pre-configured CC, e.g., the initial access CC in FIG. 10, then finds an anchor CC to be camped. Uni-C or CC is the resource that an operator can use to serve one UE. So different from the Cell service based 5G / 4G base station, the new service may be based on TP ID, CC ID and / or Uni-C ID given by the operator. One Uni-C maybe the set of a frequency Carriers, like FR1 FR2, or it can represent the Carriers one operator can use. Like some CCs in FR1, some CCs in FR2. So it is not limited by one physically deployed base station. It can schedule all the resources it has to serve one UE. Even other operators’ CC (shared) , it has opportunity to use it.
[0190] In some implementations, a frequency resource allocation may be provided by an indication comprising at least one Uni-C ID and one or more CC IDs associated with the Uni-C, or more comprehensively, by an indication of at least one Freq-ID where an Freq-ID indicates a Uni-C ID, one or more CC IDs, bandwidth part (BWP) , and (optionally) a number of RBGs or RBs.
[0191] As aforementioned, there may be a plurality of network nodes and / or carriers available for UE. Therefore, the UE can be scheduled based on network nodes and / or carriers, rather than fixed access to a certain cell (all scheduling is based on the certain cell) .
[0192] In some implementations, each network node may be associated with at least one set of carriers (Uni-C) . A network node can use its associated set of carriers to communicate with UE. For example, the network node#1 is associated with the Uni-C#1, the network node#2 is associated with the Uni-C#2, and the network node#3 is associated with the Uni-C#3. For another example, the network node#1 is associated with the Uni-C#1 and Uni-C#2, the network node#2 is associated with the Uni-C#1 and Uni-C#3, and the network node#1 is associated with the Uni-C#1, Uni-C#2 and Uni-C#3. This is not limited to this application.
[0193] The association relationship between the network nodes and the sets of carriers may be pre-defined or pre-configured. In embodiments of this application, pre-defined or pre-configured may refer to a pre-defined in the standard, or is derived from related code, table, function, text, string or a combination thereof.
[0194] In some implementations, a network node associated with an anchor Uni-C (anchor CC) may be referred to as an anchor network node. A network node associated with an initial access Uni-C (initial access CC) may be referred to as an initial access network node. A network node associated with a serving Uni-C (serving CC) may be referred to a serving network node.
[0195] Referring back to step 720, in some implementations, the UE may transmit the first information to the first network node, the first network node is associated with a first set of carries, where an initial access carrier, an anchor carrier, or a serving carrier is comprised in the first set of carries. That is, the first network node may be an anchor network node, an initial access network node or a serving network node. The UE can report CSI to various types of network nodes for uplink, not necessarily to network node (s) that transmits reference signals in downlink, so that the uplink and downlink can be decoupled.
[0196] In some implementations, the sets of reference signals may be respectively associated with sets of beams. Each beam in a set of beams may be associated with a reference signal in a set of reference signals, respectively. For example, the first set of reference signal includes reference signal#a1, reference signal#a2, reference signal#a3 and reference signal#a4. A first set of beams, which is associated with the first set of reference signals, includes beam#a1, beam#a2, beam#a3 and beam#a4. The beam#a1 is used to transmit the reference signal#a1, the beam#a2 is used to transmit the reference signal#a2, beam#a3 is used to transmit the reference signal#a3 and beam#a4 is used to transmit the reference signal#a4. Each beam may correspond to a beam direction.
[0197] Beam can also be expressed as a “spatial filter” or “spatial parameters” . A beam is formed by performing amplitude and / or phase weighting on data transmitted or received by at least one antenna port, or by using other methods such as, for example, adjusting a related antenna parameter. The beam may include a transmit (Tx) beam and / or a receive (Rx) beam. A beam used to transmit a signal, referred to as a transmit beam (Tx beam) , can also be expressed as a spatial domain transmit filter, or spatial transmit parameters. The transmit beam indicates distribution of signal strength formed in different spatial directions after a Tx beam signal is transmitted through an antenna. Similarly, a beam used to receive a signal, referred to as a receive beam (Rx beam) , can also be expressed as spatial domain receive filter, or spatial receive parameters. The receive beam indicates distribution of signal strength of a wireless signal received from an antenna and that is in different spatial directions.
[0198] Each beam may be assigned / associated with an index or identifier (ID) . Notably, in some implementations, the terms “identifier (ID) ” and terms “index” may be used interchangeably. In some instances, an index of a beam (or expressed as beam index) may be pre-defined or pre-configured.
[0199] Each beam may be assigned / associated with an index based on network nodes, carriers, a set of carriers or a combination thereof.
[0200] In a first implementation, all beams of sets of beams may be numbered sequentially. For example, 2 beams in beam set#1 may be numbered with indexes from 1 to 2, and 4 beams in beam set#2 may be numbered with indexes from 3 to 6. Thus, the UE and network side could distinguish the beams by their unique indexes.
[0201] In a second implementation, all beams of sets of beams associated with the same network node may be numbered sequentially. For example, beam set#1 and beam set#2 are associated with TP#1, and beam set#3 and beam set#4 are associated with TP#2. Two beams in beam set#1 may be numbered with indexes from 1 to 2, and four beams in beam set#2 may be numbered with indexes from 3 to 6. Four beams in beam set#3 may be numbered with indexes from 1 to 4, and four beams in beam set#4 may be numbered with indexes from 5 to 8. Thus, the UE and network side could distinguish beams by their indexes and TP IDs.
[0202] In a third implementation, all beams of sets of beams associated with the same carrier may be numbered sequentially. For example, beam set#1 and beam set#2 are associated with carrier#1, and beam set#3 and beam set#4 are associated with carrier#2. Two beams in beam set#1 may be numbered with indexes from 1 to 2, and four beams in beam set#2 may be numbered with indexes from 3 to 6. Four beams in beam set#3 may be numbered with indexes from 1 to 4, and four beams in beam set#4 may be numbered with indexes from 5 to 8. Thus, the UE and network side could distinguish beams by their indexes and carrier IDs.
[0203] In a fourth implementations, all beams of sets of beams associated with the same Uni-C may be numbered sequentially. For example, beam set#1 and beam set#2 are associated with Uni-C #1, and beam set#3 and beam set#4 are associated with Uni-C#2. Two beams in beam set#1 may be numbered with indexes from 1 to 2, and four beams in beam set#2 may be numbered with indexes from 3 to 6. Four beams in beam set#3 may be numbered with indexes from 1 to 4, and four beams in beam set#4 may be numbered with indexes from 5 to 8. Thus, the UE and network side could distinguish beams by their indexes and carrier IDs.
[0204] In a fifth implementations, all beams of sets of beams associated with the same network node and carrier may be numbered sequentially. For example, beam set#1 is associated with TP#1 and CC#1, beam set#2 is associated with TP#1 and CC#2, beam set#3 is associated with TP#2 and CC#1, and beam set#4 is associated with TP#2 and CC#2. Two beams in beam set#1 may be numbered with indexes from 1 to 2, and four beams in beam set#2 may be numbered with indexes from 1 to 4. Four beams in beam set#3 may be numbered with indexes from 1 to 4, and four beams in beam set#4 may be numbered with indexes from 1 to 4. Thus, the UE and network side could distinguish beams by their indexes, TP IDs and carrier IDs. Alternatively, as aforementioned, a reference signal set may be associated with a single TP and a single carrier. When a reference signal set (or a beam set) is assigned / associated with an index, the TP IDs and carrier IDs can be replaced with reference signal set indexes (or beam set indexes) . This is not limited to this application.
[0205] Notably, some possible implementations for numbering beam indexes are provided, and other numbering implementations are not listed here. The network side and UE may select an implementation based on application scenario (e.g., the number of transmitting beams) , so that they can identify different beams.
[0206] In some implementations, UE may report channel states of part or all of the beams associated with the sets of reference signals. For example, UE may select N (which is a positive integer) beams with best channel states, such as N beams with N-best RSRP.
[0207] In some implementations, the sets of reference signals comprise two or more sets of reference signals with a quasi co-located (QCL) relationship. In 5G NR, the QCL relationship is defined as: two antenna ports are said to be quasi co-located if properties of the channel over which a symbol on one antenna port is conveyed can be inferred from the channel over which a symbol on the other antenna port is conveyed. Two or more sets of reference signals with QCL relation may go through similar channel states in some aspects, so that some similar information may not be reported repeatedly, reducing resource consumption.
[0208] Still referring to step 720, the first information may indicate channel states corresponding to sets of reference signals in a variety of ways. The channel states indicated by the first information are detailed as follows:
[0209] In a first implementation, each channel state corresponds to a network node of the two or more network nodes, and each of the two or more network nodes is associated with at least one set of reference signals of the sets of reference signals. For example, the first information may indicate M (which is a positive integer) beam (s) for each network node. The UE could report channel states from granularity of network nodes, so that the network side could schedule suitable network node (s) to serve the UE.
[0210] For illustrative purposes, FIG. 11 illustrates a first schematic diagram of sets of reference signals according to embodiments of this application. For TP#1, a reference signal set#1 is associated with a beam set#1 that includes two beams. For TP#2, a reference signal set#2 is associated with a beam set#2 that includes four beams. The UE may report CSI of M beam (s) (e.g., M=1) of the beam set#1, and M (e.g., M=1) beam (s) of the beam set#2.
[0211] As shown in FIG. 11, let us first consider the case of a single CC with different TPs. There is a possible case that there are 2 TPs servicing one UE of one CC (the Uni-CC is separately considered) , we can see that TP#1 transmitted 2 beams and TP#2 transmitted 4 beams to the UE. The UE may report at least one beam for each TP to the network side. So based on the index of these beams, for example, from index 1-6, the UE may report at least one beam in index 1-2, to show that in the TP#1 which is the best beam, and at least one beam in index 3-6, to show that in the TP#2, which is the best beam. In some cases, the TP may be transparent on the UE side (e.g., the association relationship between beams and TPs is not known by UE) , but if only TP1 or TP2 is reported (e.g., UE may not report CSI of each TP) , this may be not what the measurement wants. Therefore, the network side may indicate the UE from which beams at least one beam need be reported. Notably, the number of reported beams for each TP can be the same or different. For example, if there is more than one beam to be reported for the CC with 2 TPs. If each TP has already reported the best beam, the rest of the beams to be reported can come from one TP with the best RSRPs.
[0212] In some instances, the first information may indicate channel states corresponding to part or all of the two or more network nodes. For example, UE may select P network nodes from the two or more network nodes based on their CSI, and report CSI of each of the P network nodes. This is not limited to this application.
[0213] Notably, the number of reported beams (the value of M) may be predefined or preconfigured. Similarly, the number of reported network nodes (the value of P) may be predefined or preconfigured. This is not limited to this application.
[0214] In a second implementation, each channel state corresponds to a carrier, and the carrier is associated with at least one set of reference signals of the sets of reference signals. For example, the first information may indicate Q (which is a positive integer) beams for each carrier. The UE could report channel states from granularity of carriers, so that the network side could schedule suitable carrier (s) to serve the UE.
[0215] For illustrative purposes, FIG. 12 illustrates a schematic diagram of four sets of reference signals according to embodiments of this application. For CC1#1, a reference signal set#1 is associated with TP#1 and is associated with 2 beams, and a reference signal set#2 is associated with TP#2 and is associated with 4 beams. For CC1#2, a reference signal set#3 is associated with TP#1 and is associated with 4 beams, and a reference signal set#4 is associated with TP#2 and is associated with 4 beams.
[0216] As shown in FIG. 12, it is also possible that there are multiple CCs are transmitted by the same TP. Downlink signals can be transmitted in the meantime or not. As we can see in the FIG. 12, the beam directions for different CCs (or frequency bands) could be the same or different. After measurement, the UE needs to report at least one beam for each CC. Firstly, the UE can report the beam index for each CC separately. For example, for the CC#1, report beam index 1 and beam index 5; for CC#2, report beam index 3 and beam index 5. In order to save the report resource, for example, if there is information that indicates the CC1 and CC2 at TP2 are QCL related. And, if the beam directions are the same for the different CCs, such as if the CCs are near-frequency. Based on the information, the network side can assume that the UE may only report only one time for TP2. So the network side may only receive the beam index 5 in its report. Another way is that if the beam index is the same direction for the different frequencies in the same TP, the UE can just report one beam to the network side at one time. For example, the beam index 3 for CC1 and the beam index 5 for CC2 are the same beam direction in reality, if the measurement shows that they are the same best beam for the related TP, they can only report once at one-time report.
[0217] In some instances, the first information may indicate channel states corresponding to part or all of carriers associated with the sets of reference signals. For example, UE may select R carrier (s) from the carriers based on CSI, and report CSI of each of the R carrier (s) . This is not limited to this application.
[0218] Notably, the number of reported beams (the value of Q) may be predefined or preconfigured. Similarly, the number of reported network nodes (the value of R) may be predefined or preconfigured. This is not limited to this application.
[0219] In a third implementation, each channel state corresponding to a set of carriers, and the set of carriers (e.g., Uni-C) includes at least one carrier that is associated with at least one set of reference signals of the sets of reference signals. For example, the first information may indicate Y (which is a positive integer) beams for each Uni-C. The UE could report channel states from granularity of Uni-C, so that the network side could schedule suitable Uni-C to serve the UE.
[0220] For illustrative purposes, FIG. 13 illustrates a third schematic diagram of sets of reference signals according to embodiments of this application. For Uni-C#1, a reference signal set#1 is associated with TP#1 and CC#1 where CC#1 is included in Uni-C#1, a reference signal set#2 is associated with TP#2 and CC#1; for Uni-C#2, a reference signal set#3 is associated with TP#2 and CC#2 where CC#2 is included in Uni-C#2.
[0221] As shown in FIG. 13, it is also possible that there are multiple Uni-Cs are transmitted by (associated with) the same TP. Like the FIG. 13, TP#2 can transmit Uni-C#1 and Uni-C#2 to the UE, which may refer to different frequency bands. For example, Uni-C#1 has (includes) the carriers for sub-6Ghz. Uni-C#2 has (includes) the carriers for 20Ghz. It is possible for Uni-C#1 has fewer beams than Uni-C#2 as shown in the FIG. 13. The simple way also is that the UE can report the index for each CC separately. For saving the report resource, for example, if there is information that the Uni-C#1 and Uni-C#2 at TP2 are QCL related. For example, the Uni-C#1 beam index 1 is QCL related to Uni-C#2 beam indexes 1 and 2. While the UE reports the beam index 1 for Uni-C#2, there is no need to report which beam is the best for Uni-C#1 for TP2. So the information reported can be reduced.
[0222] In some instances, the first information may indicate channel states corresponding to part or all of Uni-Cs associated with the sets of reference signals. For example, UE may select Z Uni-C (s) from all the Uni-Cs, and report CSI of each of the Z Uni-C (s) . This is not limited to this application.
[0223] Notably, the number of reported beams (the value of Y) may be predefined or preconfigured. Similarly, the number of reported network nodes (the value of Z) may be predefined or preconfigured. This is not limited to this application.
[0224] Notably, the first implementation, the second implementation and the third implementation may be implemented alone or in a combination. For example, the first implementation (each channel stated corresponds to a network node) and the second implementation (each channel state corresponds to a carrier) may be implemented in a combination. For example, the information may indicate X (which is a positive integer) beams for each network node each carrier. In some cases, a set of reference signals may be associated with a single network node and a single carrier. In other words, reference signals transmitted by a network node with the same carrier form a set of reference signals. In these cases, the first information indicating X beams for each network node each carrier may be interpreted as: the first information indicates X beams for each set of reference signals. This is not limited to this application.
[0225] UE may transmit the first information in a variety of ways. The first information may be carried in one or more messages based on network nodes, carriers, Uni-Cs or a combination thereof. An example of Uni-C is given below.
[0226] In a first implementation, the first information may be carried in two or more uplink control information (UCI) messages, and each UCI message correspond to a set of carriers (e.g., Uni-C) . For example, a reference signal set#1 is associated with Uni-C#1, a reference signal set#2 is associated with Uni-C#2 and a reference signal set#3 is associated with Uni-C#3. The part of first information about reference signal set#1 can be carried in UCI message#1, the part of the first information about reference signal set#2 can be carried in UCI message#2, and the part of the first information about reference signal set#3 can be carried in UCI message#3.
[0227] In some instances, each UCI message is scrambled by a unique value. For example, each UCI message may be scrambled by an identifier of the corresponding Uni-C. Thus, when the network side receives a UCI message, the network side could know its associated Uni-C based on its scrambling value.
[0228] In some instances, the UE may transmit the UCI messages in a predefined / preconfigured order, so that the network side could obtain the association relationship between the UCI messages and the Uni-Cs based on the order. For example, the UCI messages may be transmitted in increasing order with Uni-C IDs. This is not limited to this application.
[0229] For illustrative purposes, FIG. 14 illustrates a first schematic diagram of UCI messages according to embodiments of this application. As shown in FIG. 14, we can see that there are 3 different Uni-CC measurements that happened on the UE side. These measurements could happen in the meantime or not. After measurement, the UE may report the best beams of each CC of each Uni-C to the network side. The first way is to report separately. As we can see in FIG. 14, there are at least 3 UCI messages for the report in this FIG. 14. The report order can follow the order of Uni-C ID. For example, the network side may report the Uni-C#1 firstly. The information could be transmitted in one UCI message, or more than one UCI message if the information is larger than one UCI message can take. The UCI message may carry the Uni-C-related best beams, best CC, best CC groups and so on. The information (UCI message) may use the Uni-C ID to do scrambling, then the network node could know the information (UCI message) is for which Uni-C clearly. Another choice is that report the UCI messages based on the order of downlink reference signals from which Uni-C. For example, if the UE knows that the network side will transmit the downlink signals in Uni-C #1 firstly, then, the UE could report the Uni-C #1-related UCI first. Before it finishes the Uni-C #1, the network side will not assume that the UE transmits other UCI messages from other Uni-Cs. Another choice is that the report is based on the order of network side determined. As we discussed before, there may be priority for some specific Uni-C. For example, some Uni-C is shared, so the network side would like to know what’s the RSRP like in the shared CC. So the network side may order the UE to report the RSRP of Uni-C#2 first.
[0230] Notably, the Uni-C in the first implementation (that the first information is carried in two or more UCI messages based on Uni-C) can be replaced with network nodes, carriers, or reference signal sets. Details are omitted here.
[0231] In a second implementation, the first information may be carried in one or more common UCI messages. For example, the first information may be uniformly encapsulated in UCI messages. When the size of the first information is larger than the size of a single UCI message, the first information may occupy more than one UCI message.
[0232] For illustrative purposes, FIG. 15 illustrates a second schematic diagram of a UCI message according to embodiments of this application. As shown in FIG. 15, we can see that there are 3 different Uni-CC measurements that happened on the UE side. These measurements could happen in a meantime or not. After measurement, the UE may need to report the best beams of each CC of each Uni-C to the network side. For the sake of saving reporting resources and fast feedback, there is a possible way to transmit all information in one UCI message. So if the UCI message covers all information from different Uni-Cs or multiple information, it may not be scrambled by a Uni-CC ID, maybe it could use some specific information that is commonly set in standard (or other predefined manner) or pre-configured by the network side and has been transmitted to UE already. Or it could be the sum of the Uni-CC IDs together, which is different from the Uni-CC ID they have, by using some formula decided by standard already.
[0233] Notably, the first implementation and the second implementation are given as examples for transmitting the first information, and UE may also transmit the first information in other ways. For example, the UE may report CSI associated with each network node to the corresponding network node respectively. For another example, UE may report all the CSI to a network node indicated by the network side (e.g., indicated by the second information described in FIG. 7) . This is not limited to this application.
[0234] As aforementioned, the network node (s) who receives the first information can be one or more of: an anchor network node, an initial access network node, and a serving network node.
[0235] Let’s discuss which network node (s) may receive the report (first information) and do the rest thing (e.g., process the first information) . As there is so much information that need to be reported, the most important thing is to feedback as fast as possible, and the second thing is to make sure that the report information thing (e.g., the first information) could be as reliable as possible.
[0236] For illustrative purpose, FIG. 16 illustrates a schematic diagram of uplinks according to embodiments of this application. As shown in FIG. 16, the first TP, second TP and third TP may be TPs in a UC-CF system (as described in FIG. 6) . The first TP may be an anchor / initial access TP which is associated with an anchor / initial access CC (the initial access CC and the anchor CC are the same CC in this example) and at least one serving CC. The first TP can use associated CCs communicating (both downlink and uplink) with the UE. The second TP can be a serving TP which is associated with at least one serving CC. The second TP can use the serving CC communicating (both downlink and uplink) with the UE. The third TP is a serving TP which is associated with at least one serving CC, and the third TP can use the serving TP receiving (uplink) information from the UE. More details of the UC-CF system, anchor TP, serving TP and initial access TP can refer to description in FIG. 7. Referring back to step 710 and step 720, in some instances, the first TP and the second TP may transmit sets of reference signals to UE, and UE may transmit the first information to any one or more of the first TP, second TP and the third TP. This is not limited to this application.
[0237] From FIG. 16, we can see that there are 3 possible links to transmit to the network side. The first link is through an initial access CC or an anchor carrier. The second link is through the DL serving CC for UE. The third link is through the UL anchor or serving CC. Maybe there is not only one serving CC, or not only one TP there, maybe it is a set of TPs serving the UE. The first way is that while finishing measurement, the UE could read the slots of each link, if there is an uplink in the next time, the UE could transmit the UCI in that time, and for the rest of the all rest UCI, the UE may choose the same TP to send the reports. Then, another way is to find the best link with the largest RSRP. It could help the link with the best reliable link. Or in order to enhance the robustness, the UE can send the UCI through all the possible links. To decide which way to choose, it could be pre-configured by the network side by signaling, or the UE could choose one based on some events or priority. For example, if some of the links’ RSRP is larger than a threshold, the UE can choose the link to transmit. Or, if all the links’ RSRP are not larger than a threshold, the UE could choose the initial access or anchor carrier to transmit the report, and so on.
[0238] According to the above solution, two or more network nodes may transmit sets of reference signals to the terminal, making full use of network node resources. Time resources respectively associate with the sets of reference signals partially or fully overlap, that is, the time can be shared by the sets of reference signals. The terminal transmits first information that indicates channel states corresponding to the sets of reference signals, so that the network side can obtain channel states of a plurality of channels corresponding to the two or more network nodes. Thus, the network side may process based on the channel states in a subsequent communication, improving flexibility of resource utilization.
[0239] Referring back to FIG. 7, in some implementations, at step 730, the second information may further indicate the sets of reference signals, and the sets of reference signals are respectively associated with sets of physical resources. Thus, the UE could receive these sets of reference signals based on the sets of physical resources.
[0240] In some implementations, the second information may be generated based on UE’s capability, so that the configured sets of physical resources can be within the receiving capacity of the UE. For example, the capability may indicate the largest bandwidth that UE supports. The sets of physical resources could be configured not to exceed the largest bandwidth of the UE. The network side (e.g., the first TP and / or the second TP illustrated in FIG. 16) could obtain UE’s capability in a variety of ways. For example, a network node (e.g., the first TP and / or the second TP illustrated in FIG. 16) may transmit request information that requests capability information, and the UE can respond to the request information to report its capability. For example, the UE may transmit the capability information to the network side (any one or more of the first TP, the second TP and the third TP illustrated in FIG. 16) . As aforementioned, due to the flexibility between the network nodes, the network node (who requests capability information) and the network node (who receives the capability information) can be the same or different.
[0241] In some implementations, a measurement reporting (e.g., the first information) based on downlink measurement is considered, based on the UE capability report and the pre-configured signaling (e.g., the second information) , and the downlink signals (sets of reference signals) transmitted by the network side, the UE may have already known the information about the channel strength connect with each beam of each TP of each CC of each CC group of each Uni-CC.
[0242] So based on these measurements done by the UE, it needs to report the information to tell the network side which beam of which TP of which CC of which CC group of which Uni-C has a better channel to for later transmission or switching or change the connection to.
[0243] As the description above, the reporting considers these parts:
[0244] What information may be included in reporting.
[0245] For this question, an important thing is to report the quality of each beam of each TP of each CC of each CC group of each Uni-C the UE measured. It is resource-depleting to report all the information to the network side, and it is not necessary. In general, for example, for each TP, the best [M] beams with best RSRPs could be reported.
[0246] Who will carry the information and how the information report to the network side.
[0247] Let’s discuss who will carry the information and how the information reported to the network side. In general, the bits may be carried by UCI, and through uplink PUCCH or PUSCH. The timelines will be informed by the network side, and the network side may achieve the UCI at the given uplink slot and symbols. For further discussion, we need to define which UCI is used to carry what information in it. For example, the UCI can be CC-ID based.
[0248] For the information UCI carries, there are several ways that aim to reduce the feedback information:
[0249] Can set a rule, for example, report RSRP offset among different CCs or other compression methods to report;
[0250] Can set a common RSRP Offset for different CCs (or FR1 / FR2, CC groups, etc. )
[0251] For the first case, it is a case that the UE may ask to report the RSRP value it measured, there may exist a gap for different CC as there may exist different transmit power for different CCs. So, if there is a common value about different RSRP offsets for different Uni-Cs, then, it is easier for different CC RSRP reports. Or the standard can pre-define an offset value, the UE can report the RSRP value and assume the RSRP offset is there.
[0252] Which network node may receive the report and do the rest thing.
[0253] Another thing is while considering the report changing protocols. While reporting, it is possible for the network side to close some of the TPs or change the CC service for UE. So if the UE received a signal that the network side changed its serving or measurement information sets for UE, the UE could stop reporting the old information about the changed TP / CC. And to those TP / CC ID would not serve for the UE, the UE could stop reporting the information about it and stop sending UCI to such TP / CC station.
[0254] Based on a UC-CF network architecture, a new measurement and reporting procedure need to be designed, where content includes but is not limited to the following:
[0255] For illustrative purposes, FIG. 17 illustrates a first flow chart of a communication method according to embodiments of this application.
[0256] Notably, as aforementioned, due to the flexibility between the network nodes (e.g., TPs) , the TP in each step in FIG. 17 can be the same or different. For ease of description, TP#1 in each step is given as an example.
[0257] Optionally, at step 1710, TP#1 transmits request information to UE. Correspondingly, the UE receives the request information from TP#1.
[0258] The request information requests capability information. For example, the request information may request parameters related to a capability for simultaneous transmission with two or more network nodes. Thus, the network side may schedule suitable network nodes to serve the UE.
[0259] Optionally, at step 1720, UE transmits capability information to TP#1. Correspondingly, TP#1 receives the capability information from UE.
[0260] For example, the UE reports its capabilities, including which TP ID, higher layer configured configure ID (is associated with a network node) , (optional) CCs, TP sets, higher layer configured ID sets, or Uni-Cs that the UE can measure and wants to measure.
[0261] Optionally, at step 1730, TP#1 transmits second information to UE. Correspondingly, the UE receives the second information from TP#1.
[0262] For example, based on a capability of the UE, an operator (e.g., TP#1) may pre-configure measurement information (i.e., the second information) and resources for the UE. The measurement information (i.e., the second information) may be based on TP sets, higher layer configured ID sets, Uni-C or a CC-ID.
[0263] The configurations of TPs which will prepare resources for the UE to do measurements are prepared. The TRPs send the measurement resources to the UE at the pre-configured time, through SSB, PDCCH, PDSCH, CSI-RS, etc.
[0264] At step 1740, TP#1 transmits a reference signal set#1, a reference signal set#2 and a reference signal#3 to UE. Correspondingly, the UE receives the reference signal set#1, a reference signal set#2 and a reference signal#3 from TP#1.
[0265] The reference signal set#1 is associated with Uni-C#1, the reference signal set#2 is associated with Uni-C#2, and reference signal set#3 is associated with Uni-C#3.
[0266] At step 1750, the UE transmits UCI message#1 to TP#1. Correspondingly, TP#1 receives the UCI message#1 from TP#1.
[0267] The UCI message#1 carries information that indicates a channel state corresponding to reference signal set#1.
[0268] At step 1760, the UE transmits UCI message#2 to TP#1. Correspondingly, TP#1 receives the UCI message#2 from TP#1.
[0269] The UCI message#2 carries information that indicates a channel state corresponding to reference signal set#2.
[0270] At step 1770, the UE transmits UCI message#3 to TP#1. Correspondingly, TP#1 receives the UCI message#3 from TP#1.
[0271] The UCI message#3 carries information that indicates a channel state corresponding to reference signal set#3.
[0272] The UE may perform measurement based on preconfigured measurement and resources (second information and reference signal sets. And report of these measurements may be reported to the serving TP / CC (TP#1 is illustrated as the serving TP) .
[0273] As we can see in the FIG. 17, the UE can feedback on the report to the network side through different UCI messages. In this figure, we show that each UCI message can be considered to carry information about one Uni-C ID. The order of UCI messages connected to the Uni-C ID could depend on the priority the network side sent before, or based on the rule pre-set in standard. For example, if there comes one UL PUCCH slot, the UE may first transmit the best RSRP in the best Uni-C, or if the network side wants to know some specific Uni-C report, and gives the information to the UE in pre-configured signaling or through DCI / MAC-CE / RRC signaling. The UE may tell the network side the specific Uni-C report firstly.
[0274] In some implementations, although not illustrated, the network side and the UE may go through two or more rounds of configuration, measurement and reporting of CSI.
[0275] For example, new measurement indications (e.g., new second information) are sent to UE through RRC, MAC CE or DCI, which could include new TP sets, higher layer configured ID sets, Uni-C, CC group, CC measurement, the change of CC information, and / or new period and measurement information.
[0276] The UE may perform a new round of reporting based on measurement. The report of these measurements (e.g., new first information) is reported to the service TP / CC.
[0277] Based on the reported information (e.g., first information) , the network side could schedule resources to the UE for service.
[0278] For illustrative purposes, FIG. 18 illustrates a second flow chart of a communication method according to embodiments of this application.
[0279] Notably, as aforementioned, due to the flexibility between the network nodes (e.g., TPs) , the TP in each step in FIG. 18 can be the same or different. For ease of description, TP#1 in each step is given as an example.
[0280] Optionally, at step 1810, TP#1 transmits request information to UE. Correspondingly, the UE receives the request information from TP#1.
[0281] Details of the request information can be referred to description in step 1710.
[0282] Optionally, at step 1820, UE transmits capability information to TP#1. Correspondingly, TP#1 receives the capability information from UE.
[0283] Details of the capability information can be referred to description in step 1720.
[0284] Optionally, at step 1830, TP#1 transmits second information to UE. Correspondingly, the UE receives the second information from TP#1.
[0285] Details of the second information can be referred to description in step 1730.
[0286] At step 1840, TP#1 transmits a reference signal set#1, a reference signal set#2 and a reference signal#3 to UE. Correspondingly, the UE receives the reference signal set#1, a reference signal set#2 and a reference signal#3 from TP#1.
[0287] The reference signal set#1 is associated with Uni-C#1, the reference signal set#2 is associated with Uni-C#2, and reference signal set#3 is associated with Uni-C#3.
[0288] At step 1850, the UE transmits UCI message to TP#1. Correspondingly, TP#1 receives the UCI message from TP#1.
[0289] The UCI message may indicate channel states corresponding to both the reference signal set#1, reference signal set#2 and reference signal#3.
[0290] As we can see in the FIG. 18, the UE can feedback on the report to the network side through the same UCI message. In this FIG. 18, we show that each UCI message can be considered to carry information about all information it has.
[0291] For illustrative purposes, FIG. 19 illustrates a third flow chart of a communication method according to embodiments of this application.
[0292] Notably, as aforementioned, due to the flexibility between the network nodes (e.g., TPs) , the TP in each step in FIG. 19 can be the same or different. For ease of description, TP#1 and TP#2 in these steps are given as an example.
[0293] Optionally, at step 1910, TP#1 transmits request information to UE. Correspondingly, the UE receives the request information from TP#1.
[0294] Details of the request information can be referred to description in step 1710.
[0295] Optionally, at step 1920, UE transmits capability information to TP#1. Correspondingly, TP#1 receives the capability information from UE.
[0296] Details of the capability information can be referred to description in step 1720.
[0297] Optionally, at step 1930, TP#1 transmits second information to UE. Correspondingly, the UE receives the second information from TP#1.
[0298] Details of the second information can be referred to description in step 1730.
[0299] In some implementations, at step 1930, TP#1 may further transmit the second information (or part of the second information, for example, the part of configuration of physical resources) to TP#2, so that the TP#2 could transmit reference signals based on the second information.
[0300] At step 1940, TP#1 transmits a reference signal set#1 and a reference signal set#2 to UE. Correspondingly, the UE receives the reference signal set#1 and the reference signal set#2 from TP#1.
[0301] The reference signal set#1 is associated with Uni-C#1 and the reference signal set#2 is associated with Uni-C#2.
[0302] At step 1950, TP#2 transmits a reference signal set#3 to UE. Correspondingly, the UE receives the reference signal set#3 from TP#2.
[0303] The reference signal set#3 is associated with Uni-C#3.
[0304] At step 1960, the UE transmits UCI message#1 to TP#1. Correspondingly, TP#1 receives the UCI message#1 from TP#1.
[0305] The UCI message#1 carries information that indicates a channel state corresponding to reference signal set#1.
[0306] In some implementations, at step 1960, the UE may further transmit the UCI message#1 to TP#2.
[0307] At step 1970, the UE transmits UCI message#2 to TP#1. Correspondingly, TP#1 receives the UCI message#2 from TP#1.
[0308] The UCI message#2 carries information that indicates a channel state corresponding to reference signal set#2.
[0309] In some implementations, at step 1970, the UE may further transmit the UCI message#2 to TP#2.
[0310] At step 1980, the UE transmits UCI message#3 to TP#1. Correspondingly, TP#1 receives the UCI message#3 from TP#1.
[0311] The UCI message#3 carries information that indicates a channel state corresponding to reference signal set#3.
[0312] In some implementations, at step 1980, the UE may further transmit the UCI message#3 to TP#2.
[0313] As we can see in the FIG. 19, the UE can feedback on the report to the network nodes through different UCI messages. In this FIG. 19, we show that each UCI message can be considered to carry information about one Uni-CC ID. The difference there is that the UCI messages also may need to be feedback to not only TP#1 (or the main serving BS or TP or Anchor CC or initial CC or serving Carrier) , because there may exist some latency for the serving CC due to scheduling. So it may need to transmit the report to the TP#2 (or secondary serving TP or CC and so on) . There may exist more than one UL link and targets there for reporting. And considering there is not only about the latency, but also the link robustness, coverage, reliability, priority, and so on. So the link to the TP#2 (or secondary serving CC) may be mandatory or optional if needed, so maybe some parts or all parts there may be dashed.
[0314] For illustrative purposes, FIG. 20 illustrates a fourth flow chart of a communication method according to embodiments of this application.
[0315] Notably, as aforementioned, due to the flexibility between the network nodes (e.g., TPs) , the TP in each step in FIG. 20 can be the same or different. For ease of description, TP#1 and TP#2 in these steps are given as an example.
[0316] Optionally, at step 2010, TP#1 transmits request information to UE. Correspondingly, the UE receives the request information from TP#1.
[0317] Details of the request information can be referred to description in step 1710.
[0318] Optionally, at step 2020, UE transmits capability information to TP#1. Correspondingly, TP#1 receives the capability information from UE.
[0319] Details of the capability information can be referred to description in step 1720.
[0320] Optionally, at step 2030, TP#1 transmits second information to UE. Correspondingly, the UE receives the second information from TP#1.
[0321] Details of the second information can be referred to description in step 1730.
[0322] In some implementations, at step 2030, TP#1 may further transmit the second information (or part of the second information, for example, the part of configuration of physical resources) to TP#2, so that the TP#2 could transmit reference signals based on the second information.
[0323] At step 2040, TP#1 transmits a reference signal set#1 and a reference signal set#2 to UE. Correspondingly, the UE receives the reference signal set#1 and the reference signal set#2 from TP#1.
[0324] The reference signal set#1 is associated with Uni-C#1 and the reference signal set#2 is associated with Uni-C#2.
[0325] At step 2050, TP#2 transmits a reference signal set#3 to UE. Correspondingly, the UE receives the reference signal set#3 from TP#2.
[0326] The reference signal set#3 is associated with Uni-C#3.
[0327] At step 2060, the UE transmits UCI message to TP#1. Correspondingly, TP#1 receives the UCI message from TP#1.
[0328] The UCI message carries information that indicates channel states corresponding to reference signal set#1, reference signal set#2 and reference signal set#3.
[0329] In some implementations, at step 2060, the UE may further transmit the UCI message to TP#2.
[0330] As we can see in the FIG. 20, the UE can feedback on the report to the network side through the same UCI message. In this FIG. 20, we show that each UCI message can be considered to carry information about all information it has. The difference here is that the UCI message may be reported through different ways. For example, only TP#1 (or the main serving BS or TP or Anchor CC or initial CC or serving Carrier) , or through TP#2 (e.g., the secondary serving CC or TP or Anchor CC or initial CC and so on) . This could be because there may exist some latency for the serving CC due to scheduling, so it may need to transmit the report to TP#2 (or the secondary serving TP or CC and so on) . There may exist more than one UL link and target there for reporting. And considering there is not only about latency, but also link robust, coverage, reliability, priority, and so on. So the link to TP#2 (or the secondary serving CC) could be mandatory or optional if needed, and the report can also only be reported to TP#2 (or the secondary CC) , and the report can both be reported to TP#2 and TP#1 (or the secondary and primary CC) together.
[0331] As aforementioned, at least one network node may support at least one power saving mode. During continuous measurement, one or more network nodes may enter a power saving mode and stop the transmission of their reference signals. In some implementations, the method further includes: the UE receives third information, where the third information indicates that a second network node of the two or more network nodes is in a power saving mode. The terminal stops performing measurements with the second network node.
[0332] In some implementations, a CC and / or a Uni-C may support at least one power saving mode. The third information may indicate that a carrier and / or Uni-C is in a power saving mode. This is not limited to this application.
[0333] For illustrative purposes, FIG. 21 illustrates a flow chart of a network node entering a power saving mode according to embodiments of this application.
[0334] Notably, as aforementioned, due to the flexibility between the network nodes (e.g., TPs) , the TP in each step in FIG. 21 can be the same or different. For ease of description, TP#1 in each step is given as an example.
[0335] Optionally, at step 2110, TP#1 transmits request information to UE. Correspondingly, the UE receives the request information from TP#1.
[0336] Details of the request information can be referred to description in step 1710.
[0337] Optionally, at step 2120, UE transmits capability information to TP#1. Correspondingly, TP#1 receives the capability information from UE.
[0338] Details of the capability information can be referred to description in step 1720.
[0339] Optionally, at step 2130, TP#1 transmits second information to UE. Correspondingly, the UE receives the second information from TP#1.
[0340] Details of the second information can be referred to description in step 1730.
[0341] At step 2140, TP#1 transmits a reference signal set#1 and a reference signal set#2 to UE. Correspondingly, the UE receives the reference signal set#1 and a reference signal set#2 from TP#1.
[0342] The reference signal set#1 is associated with Uni-C#1 and the reference signal set#2 is associated with Uni-C#2.
[0343] At step 2150, the UE transmits UCI message#1 to TP#1. Correspondingly, TP#1 receives the UCI message#1 from TP#1.
[0344] The UCI message#1 carries information that indicates a channel state corresponding to reference signal set#1.
[0345] At step 2160, the UE transmits UCI message#2 to TP#1. Correspondingly, TP#1 receives the UCI message#2 from TP#1.
[0346] The UCI message#2 carries information that indicates a channel state corresponding to reference signal set#2.
[0347] At step 2170, the TP#1 transmits third information to UE. Correspondingly, UE receives the third information from TP#1.
[0348] The third information indicates that Uni-C is in a power saving mode. The UE stops performing measurements with the Uni-C#3.
[0349] The UE stops performing measurements on the reference signal set#3 and does not transmit a UCI message to TP#1.
[0350] The most important feature / benefits of the application would be :
[0351] 1. Power on / off for some of network nodes, and the network side can do power saving.
[0352] The scheduling of network node granularity makes the UE does not depend on a single network node so that the network nodes can be in power saving mode.
[0353] 2. More cooperation network nodes, more / better choice for UE.
[0354] The multiple network nodes can collaborate to serve UE.
[0355] 3. Coverage network node (or carrier) , capacity network node (or carrier) could be set as a service network node (or carrier) : enable the UE camped on a certain service network node with large coverage or capacity.
[0356] 4. Decouple the control link and data link.
[0357] The control link and the data link do not need to be bound to the same network node, making the resource scheduling more flexible.
[0358] 5. Decouple the DL and UL.
[0359] The DL and UL do not need to be bound to the same network node, making the resource scheduling more flexible.
[0360] In some implementations of this application, the physical ID of the base station may be replaced by the UNI-C and the corresponding ID. Therefore, we need to consider new procedures to support measurement and reporting based on the new system architecture.
[0361] A method and scheme for UC-CF operation with measurement and reporting is proposed.
[0362] Based on the above description, this application provides at least one of the following points:
[0363] CSI report (as an example of first information) : Based on the TP / CC ID or CC group / Uni-C ID (optional) , could be multi-level report (e.g., included in multiple UCI messages) ;
[0364] based on QCL relation, it could be multi-level report, for one Uni-C or CC group, could report only [M] best beams (in one TP) ;
[0365] For each TP, report best [M] beams in one CC first;
[0366] Under the same beam [M] direction, report the other CC RSRP;
[0367] based on each Uni-C, report best [N] carriers, for each carrier, report best [M] beams;
[0368] based on each CC groups, report best [N] carriers, for each carrier, report best [M] beams;
[0369] based on each CC, report best [M] beams;
[0370] Each report can be set in one UCI message or different UCI messages;
[0371] one UCI message for one Uni-C (optional) ;
[0372] one UCI message for one CC group;
[0373] one UCI message for one CC;
[0374] one UCI message for multi-Cs;
[0375] one UCI message for multi-CC groups;
[0376] one UCI message for multi-Uni-Cs (optional) ;
[0377] Report to whom:
[0378] Serving CC single TP;
[0379] Serving CC multi-TPs together;
[0380] Serving CC multi-TPs separately;
[0381] Anchor CC single TP / multi-TPs together / multi-TPs separately;
[0382] Both Serving CC and Anchor CC single TP / multi-TPs together / multi-TPs separately;
[0383] Can set a rule, report RSRP offset among different Uni-CC or other compression methods to report;
[0384] Can set a common RSRP Offset for different Uni-C (i.e. FR1 / FR2, CC group, etc) ;
[0385] report changing protocols:
[0386] if a signaling indicating that the TP or related CC-ID is powered off, stop report the measurement / to the TP or CC (if Anchor CC or serving CC) .
[0387] Report procedure for measurement
[0388] In embodiments of this application, we figure out the procedure for the report transmission with an accessed operator. The report transmission of UE transmit to network side which index the configuration can go through such as UCI, in PUCCH or PUSCH. The UE may be allocated anchor carriers that are indicated by one or more Uni-Cs and / or CC IDs for UL communications, respectively.
[0389] The serving operator (TP#1 of operator A in an example) could transmit the indicating signaling (e.g., the request information) of UE capability to the UE. Correspondingly, the UE could receive the indicating signaling information from its serving operator (TP#1 of operator A in an example) . The signaling can be sent through the anchor CC of the serving operator, or the serving CC the UE camped, or the initial access CC the UE accessed.
[0390] The UE does the capability report to the network side, through the Anchor CC or the served CC the UE camped, or the uplink Anchor CC, or the uplink served CC the UE UL camped. The capability report could include the formats in 1st level reporting, or parts of formats in 1st level reporting and with the 2nd level capability report. If not transmitted format, the BS could consider it as a default value.
[0391] The serving operator achieved the UE capability report. From it, the network side may know some information about the UE can measured Uni-Cs and / or other information. Based on the UE capability, the serving operator may schedule the measurement resource for the UE. It can choose some sets of the knowledges that the UE needs to know to transmit. The first part is the information that the UE must know. As a different part, in order to make the measurement more accurate, or more meet the need of the BS, or more effectively, the network side could send the UE a second part of the information
[0392] By knowing the information sent by the network side, the UE would do the measurement based on the pre-configured signals. If the UE is an idle / inactive model, it would use the SSB to do the measurement.
[0393] After measurement is finished, the UE may need to report the information to the network side:
[0394] In each UCI, report the best M beams in each TP in each CC in each CC group in each Uni-CC, at least for each TP measured, the best beams should be reported;
[0395] If beams from different CC / CC group / Uni-CC shares the QCL relation, the UE can reduce the report overhead by using the relation;
[0396] The UCI can be CC-ID based, or CC group ID based, or Uni-CC ID based, report the UCI in a given order, or based on some strategy.
[0397] The UCI could be a mixed one with all information with all beams and Uni-CC, it can be scrambled with common information or some information based on the Uni-CC sets, but it needs to be different with the Uni-CC ID or CC ID.
[0398] The UCI can be sent to one of the Anchor CC or Initial CC or servicing CC or some pre-configured uplink CC.
[0399] The UCI can be sent to different TPs or links together.
[0400] Overall procedure for measurement
[0401] In some embodiments, we discuss the overall procedure for measurement and reporting. We figure out the procedure for the UE measurement with an accessed operator. The signaling of operator transmit to UE which index the configuration can go through such as RRC, MAC-CE, DCI, or a combination thereof may be used to allocate one or more anchor carriers for the UE. The UE may be allocated anchor carriers that are indicated by one or more Uni-Cs and / or CC IDs for DL and UL communications, respectively.
[0402] Step1: UE capability report
[0403] The serving operator (TP#1 of operator A in this example) could transmit the indicating signaling of UE capability to the UE. Correspondingly, the UE could receive the indicating signaling information from its serving operator (TP#1 of operator A in this example) . The signaling can be sent through the anchor TP / CC of the serving operator, or the serving TP / CC the UE camped, or the initial access TP / CC the UE accessed.
[0404] The UE do the 1st level capability report to the network side, through the Anchor TP / CC or the served TP / CC the UE camped, or the uplink Anchor TP / CC, or the uplink served TP / CC the UE UL camped. The capability report could include the formats in 1st level reporting, or parts of formats in 1st level reporting. If not transmitted format, the network side could consider it as a default value.
[0405] The serving operator achieved the 1st level report. From it, the network side may know some information about the UE can measured Uni-CCs and / or other information. The serving operator continue send the indication signaling of UE 2nd level capability report request to the UE. The signaling should be in the same CC with the 1st level capability request. I. e., same Anchor TP / CC. The network side send the 2nd level capability report request to the UE, which may include which formats need to be report, the index of formats, the UL CC the UE sent the information, it maybe default, the UE will send the 2nd level report through the CC same as the 1st level report.
[0406] The UE do the 2nd level capability report to the network side, through the Anchor TP / CC or the served TP / CC the UE camped, or the uplink Anchor TP / CC, or the uplink served TP / CC the UE UL camped. The capability report could include the formats in 2nd level reporting, or parts of formats in 2nd level reporting. If not transmitted format, the network side could consider it as a default value.
[0407] Step2: DL Signaling: Pre-configure Uni-C and CC groups for measurement
[0408] The Uni-CC IDs the measurement will send.
[0409] The CC IDs of the mentioned Uni-CC IDs the measurement will send.
[0410] The detailed information of each CC ID: bandwidth part (BWP) , and RBGs or RBs, start frequency, start symbol, symbols / slots numbers, half frame index, frame index…
[0411] The period of signals for each CC ID.
[0412] The simultaneously transmission information.
[0413] The priority information for measurement and / or reporting
[0414] The inter-CC or inter-frequency transmission simultaneously considering part overlap
[0415] The port index for some channel reference signals
[0416] Beam numbers &beam index for each CC
[0417] The report CC information
[0418] The transmit power offset from different Uni-CC
[0419] Step3-1: Measurement based on SSB
[0420] The network side indicates the SSB transmission could be an Initial Access CC, or an Anchor Carrier, or a serving Carrier or a shared CC which is indicated by the operator and own by other operators. The beam index of the CC or the TP should be related to CC-ID or Uni-CC ID or beam index of each TP should be transmitted to the UE
[0421] Beam direction (which means beam index) for different CC should be the same while CC IDs which are sending simultaneously
[0422] the SSB of those CCs want to be process together, should use the same SCS and Synchronization Raster
[0423] the SSB frequency gap should not beyond the UE capability
[0424] the beams in different TP should have different Port
[0425] TCI state for indicating the Uni-CC / CC groups / CCs / TPs will be introduced and forward to UE
[0426] a power offset for different TP / CC / CC group / Uni-CC
[0427] Step3-2: Measurement based on RS other than SSB
[0428] UE behave, do the CSI-RS / PDCCH / PDSCH DMRS / SRS measurement, and achieve the CC’s information, i.e. RSRPs.
[0429] Step4: After measurement is finished, the UE need to report the information to the network side:
[0430] In each UCI, report the best M beams in each TP in each CC in each CC group in each Uni-CC, at least for each TP measured, the best beams should be reported
[0431] If beams from different CC / CC group / Uni-CC shares the QCL relation, the UE can reduce the report overhead by using the relation
[0432] The UCI can be CC-ID based, or CC group ID based, or Uni-CC ID based, report the UCI in a given order, or based on some strategy
[0433] The UCI could be a mixed one with all information with all beams and Uni-CC, it can be scrambled with common information or some information based on the Uni-CC sets, but it need to be different with the Uni-CC ID or CC ID.
[0434] The UCI can be send to one of the Anchor CC or Initial CC or servicing CC or some pre-configured uplink CC.
[0435] The UCI can be sent to different TPs or links together.
[0436] Step5: Signaling changing for the renew information
[0437] Based on the reporting, some CC may need further measurements, or some of service CC need to power on or power Off, or the UE is moving, so there is a need for further measurements. The network side will send the UE changing of measurement through signaling.
[0438] Step6: Renewed transmission with pre-configured resource
[0439] The network side sent the signal to the UE with renewed resource.
[0440] Step7: UE report for the renewed measurement
[0441] Step8: Based on the information UE report, some detail information is given for Data transmission or other cases
[0442] The methods according to embodiments of this application are described above in detail with reference to FIGs. 6-21. The apparatuses provided in embodiments of this application are described below in detail with reference to FIGS. 6-21. The description of apparatus embodiments corresponds to the description of the method embodiments. Therefore, for content that is not described in detail, refer to the foregoing method embodiments. For brevity, details are not described herein again.
[0443] As aforementioned in FIG. 4, the apparatus 410 may be configured to perform actions performed by the UE in the foregoing method embodiments. In this case, the apparatus 410 may be the UE or a component that can be configured in the UE.
[0444] The apparatus 410 may implement steps or procedures performed by the UE in FIGs. 6-21 according to embodiments of this application. The apparatus 410 may include units configured to perform the method performed by the UE in FIGs. 6-21. 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. 6-21.
[0445] Alternatively, the apparatus 410 may be configured to perform actions performed by the network side (network node) in the foregoing method embodiments. In this case, the apparatus 410 may be the network side (network node) or a component that can be configured in the network side (network node) .
[0446] The apparatus 410 may implement steps or procedures performed by the network side (network node) in FIGs. 6-21 according to embodiments of this application. The apparatus 410 may include units configured to perform the method performed by the network side (network node) in FIGs. 6-21. 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. 6-21.
[0447] Alternatively, the apparatus 410 may be configured to perform actions performed by the third device in the foregoing method embodiments. In this case, the apparatus 410 may be the third device or a component that can be configured in the third device.
[0448] The apparatus 410 may implement steps or procedures performed by the third device in FIGs. 6-21 according to embodiments of this application. The apparatus 410 may include units configured to perform the method performed by the third device in FIGs. 6-21. 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. 6-21.
[0449] A specific process in which the units perform the foregoing corresponding steps is described in detail in the foregoing method embodiments. For brevity, details are not described herein again.
[0450] As aforementioned in FIG. 5, the methods in the foregoing method embodiments are executed by the apparatus 510.
[0451] In some embodiments, the apparatus 510 may be a UE or a component (e.g., a chip, a circuit, or a processing system) that can be configured in the UE; or the communication apparatus 510 may be a network side (network node) or a component (e.g., a chip, a circuit, or a processing system) that can be configured in the network side (network node) ; or the communication apparatus 510 may be a third device or a component (e.g., a chip, a circuit, or a processing system) that can be configured in the third device.
[0452] In a solution, the apparatus 510 is configured to perform the operations performed by the UE in the foregoing method embodiments.
[0453] For example, the processor unit 511 may be configured to perform a processing-related operation performed by the UE in the foregoing method embodiments, and the communication unit 513 may be configured to perform a communicating-related (e.g., receiving / transmitting-related) operation performed by the UE in the foregoing method embodiments.
[0454] In another solution, the apparatus 510 is configured to perform the operations performed by the network side (network node) in the foregoing method embodiments.
[0455] For example, the processor unit 511 may be configured to perform a processing-related operation performed by the network side (network node) in the foregoing method embodiments, and the communication unit 513 may be configured to perform a communicating-related (e.g., receiving / transmitting-related) operation performed by the network side (network node) in the foregoing method embodiments.
[0456] In another solution, the apparatus 510 is configured to perform the operations performed by the third device in the foregoing method embodiments.
[0457] For example, the processor unit 511 may be configured to perform a processing-related operation performed by the third device in the foregoing method embodiments, and the communication unit 513 may be configured to perform a communicating-related (e.g., receiving / transmitting-related) operation performed by the third device in the foregoing method embodiments.
[0458] An embodiment of this application further provides a computer-readable storage medium. The computer-readable storage medium stores computer instructions used to implement the method performed by the UE, or the method performed by the network side (network node) or the method performed by the third device in the foregoing method embodiments.
[0459] For example, when the computer program is executed by a computer, the computer may be enabled to implement the method performed by the UE, or the method performed by the network side (network node) , or the method performed by the third device in the foregoing method embodiments.
[0460] An embodiment 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 the method performed by the UE, or the method performed by the network side (network node) , or the method performed by the third device in the foregoing method embodiments.
[0461] An embodiment of this application further provides a communication system. The communication system includes the UE and the network side (network node) in the foregoing embodiments. Optionally, the communication system further includes the third device in the foregoing embodiments.
[0462] For explanations and beneficial effects of related content of any communication apparatus provided above, refer to a corresponding method embodiment provided above. Details are not described herein again.
[0463] A person of ordinary skill in the art may be aware that, in combination with the examples described in embodiments disclosed in this specification, units and methods may be implemented by electronic hardware or a combination of computer software and electronic hardware. Whether the functions are performed by hardware or software depends on particular applications and design constraints 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 protection scope of this application.
[0464] It should be noted that the term “receive” or “receiving” used herein may refer to receiving or otherwise obtaining from an element / component in same apparatus or from another device separate from the apparatus. Similarly, the term “transmit” or “transmitting” may refer to outputting or sending to / for an element / component in same apparatus or to / for another device separate from the apparatus. For example, any of the methods / procedures described herein may be performed by a chipset, in which case any sending or receiving steps may occur between elements of the chipset.
[0465] It may be clearly understood by a person skilled in the art that, for the purpose of convenient and brief description, for a detailed working process of the foregoing apparatus and unit, refer to a corresponding process in the foregoing method embodiment. Details are not described herein again.
[0466] In the several embodiments provided in this application, the disclosed apparatuses and methods may be implemented in other manners. For example, the described apparatus embodiment is merely an example. For example, division into the units is merely logical function division and may be other division 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 through some interfaces. The indirect couplings or communication connections between the apparatuses or units may be implemented in electronic forms, mechanical forms, or other forms.
[0467] 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, may be located in one position, or may be distributed on a plurality of network units. Some or all of the units may be selected based on an actual requirement to implement the solutions provided in this application.
[0468] In addition, function units in embodiments of this application may be integrated into one unit, or each of the units may exist alone physically, or two or more units may be integrated into one unit.
[0469] In the present disclosure, the terms “a” or “an” are defined to mean “at least one” , that is, these terms do not exclude a plural number of items, unless stated otherwise.
[0470] In the present disclosure, terms such as “substantially” , “generally” and “about” , which modify a value, condition or characteristic of a feature of an example embodiment, should be understood to mean that the value, condition or characteristic is defined within tolerances that are acceptable for the proper operation of the example embodiment for its intended application.
[0471] 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.
[0472] 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.
[0473] 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.
[0474] In the present disclosure, the terms "system" and "network" may be used interchangeably in different embodiments 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 " / " 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: only A; only B; only 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: only A; only B; only 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 embodiments 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.
[0475] A person skilled in the art should understand that embodiments 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 embodiment, a software-only embodiment, or an embodiment 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.
[0476] 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 and enable a machine to execute the instructions. When executed by any computer or the processor of a programmable data processing device, the instructions cause the apparatus to implement specific functions as described in one or more procedures in the flowcharts and / or one or more blocks in the block diagrams. 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 one or more blocks in the block diagrams.
[0477] 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 the another programmable device, so that computer-implemented processing is generated. Therefore, the instructions executed on the computer or on another programmable device provide steps for implementing specific functions as described in one or more procedures in the flowcharts and / or one or more blocks in the block diagrams.
[0478] It is clear that a person skilled in the art can make various modifications and variations to this application without departing from the scope of this disclosure. This disclosure 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.
[0479] The present disclosure encompasses various embodiments, including not only method embodiments, but also other embodiments such as apparatus embodiments and embodiments related to non-transitory computer readable storage media. Embodiments may incorporate, individually or in combinations, the features disclosed herein.
[0480] Although this disclosure refers to illustrative embodiments, this is not intended to be construed in a limiting sense. Various modifications and combinations of the illustrative embodiments, as well as other embodiments of the disclosure, will be apparent to persons skilled in the art upon reference to the description.
[0481] Features disclosed herein in the context of any particular embodiments may also or instead be implemented in other embodiments. Method embodiments, for example, may also or instead be implemented in apparatus, system, and / or computer program product embodiments. In addition, although embodiments are described primarily in the context of methods and apparatus, other implementations are also contemplated, as instructions stored on one or more non-transitory computer-readable media, for example. Such media could store programming or instructions to perform any of various methods consistent with the present disclosure.
Claims
1.A communication method, comprising:receiving sets of reference signals from two or more network nodes, wherein time resources respectively associated with the sets of reference signals partially or fully overlap, and each of the sets of reference signals comprises one or more reference signals; andtransmitting first information, wherein the first information indicates channel states corresponding to the sets of reference signals.2.The method according to claim 1, wherein each channel state corresponds to a network node of the two or more network nodes, and each of the two or more network nodes is associated with at least one set of reference signals of the sets of reference signals.3.The method according to claim 1 or 2, wherein each channel state corresponds to a carrier, and the carrier is associated with at least one set of reference signals of the sets of reference signals.4.The method according to claim 1 or 2, wherein each channel state corresponding to a set of carriers, and the set of carriers comprises at least one carrier that is associated with at least one set of reference signals of the sets of reference signals.5.The method according to claim 4, wherein the set of carriers is associated with at least one public land mobile network (PLMN) .6.The method according to any one of claims 1 to 5, wherein the sets of reference signals comprise two or more sets of reference signals with a quasi co-located (QCL) relationship.7.The method according to any one of claims 4 to 6, wherein the first information is carried in two or more uplink control information (UCI) messages, and the each UCI message correspond to a set of carriers.8.The method according to claim 7, wherein each UCI message is scrambled by an identifier of the set of carries.9.The method according to any one of claims 4 to 6, wherein the first information is carried in one UCI message.10.The method according to any one of claims 1 to 9, wherein the transmitting first information, comprises:transmitting the first information to a first network node, wherein the first network node is associated with a first set of carriers, wherein a serving carrier, an anchor carrier, or an initial access carrier is comprised in the first set of carriers.11.The method according to claim 10, wherein the method further comprises:receiving second information, wherein the second information indicates the first network node.12.The method according to any one of claims 1 to 11, wherein part or all of the two or more network nodes support at least one power saving mode.13.The method according to any one of claims 1 to 12, wherein the method further comprises:receiving third information, wherein the third information indicates that a second network node of the two or more network nodes is in a power saving mode;stopping performing measurements with the second network node.14.A communication method, comprising:receiving first information, wherein the first information indicates channel states corresponding to sets of reference signals, time resources respectively associated with the sets of reference signals partially and fully overlap, and each of the sets of reference signals comprises one or more reference signals; andprocessing based on the first information.15.The method according to claim 14, wherein the method further comprises:transmitting at least one set of the sets of reference signals.16.The method according to claim 14 or 15, wherein each channel state corresponds to a network node of the two or more network nodes, and each of the two or more network nodes is associated with at least one set of reference signals of the sets of reference signals.17.The method according to claim 14 or 15, wherein each channel state corresponding to a set of carriers, and the set of carriers comprises at least one carrier that is associated with at least one set of reference signals of the sets of reference signals.18.The method according to claim 17, wherein the set of carriers is associated with at least one public land mobile network (PLMN) .19.The method according to any one of claims 14 to 18, wherein the sets of reference signals comprise two or more sets of reference signals with a quasi co-located (QCL) relationship.20.The method according to any one of claims 17 to 19, wherein the first information is carried in two or more uplink control information (UCI) messages, and the each UCI message correspond to a set of carriers.21.The method according to claim 20, wherein each UCI message is scrambled by an identifier of the set of carries.22.The method according to any one of claims 17 to 19, wherein the first information is carried in one UCI message.23.The method according to any one of claims 14 to 22, wherein a first network node that receives the first information is associated with a first set of carries, wherein an initial access carrier, an anchor carrier, or a serving carrier is comprised in the first set of carries.24.The method according to claim 23, wherein the method further comprises:transmitting second information, wherein the second information indicates the first network node.25.The method according to any one of claims 14 to 24, wherein part or all of the two or more network nodes support at least one power saving mode.26.The method according to any one of claims 14 to 25, wherein the method further comprises:transmitting third information, wherein the third information indicates that a second network node of the two or more network nodes is in a power saving mode.27.A communication method, comprising:generating at least one set of sets of reference signals, wherein time resources associated with the sets of reference signals partially or fully overlap, each of the sets of reference signals comprises one or more reference signals, and the sets of reference signals are from two or more network nodes; andtransmitting the at least one set of the sets of reference signals.28.A communication method, comprising:receiving a set of reference signals that comprises one or more reference signals, wherein the set of reference signals is associated with a set of carriers, and the set of carriers is associated with at least one public land mobile network (PLMN) ; andtransmitting first information, wherein the first information indicates a channel state corresponding to the set of reference signals.29.A communication method, comprising:transmitting a set of reference signals that comprises one or more reference signals, wherein the set of reference signals is associated with a set of carriers, and the set of carriers is associated with at least one public land mobile networks (PLMN) ; andreceiving first information, wherein the first information indicates a channel state corresponding to the set of reference signals.30.A communication method, comprising:transmitting, by a first network node, at least one first set of reference signals to a user equipment (UE) ;transmitting, by a second network node, at least one second set of reference signals to the UE, wherein each set of reference signals comprises one or more reference signals, and time resources respectively associated with the at least one first set of reference signals and the at least one second set of reference signals; andreceiving, by a third network node, first information from the UE, wherein the first information indicates channel states corresponding to the at least one first set of reference signals and the at least one second set of reference signals.31.A communication apparatus, configured to perform the method according to any one of claims 1 to 13, 14 to 26, 27, 28, 29 or 30.32.The communication apparatus of claim 31, wherein comprising:receiving unit, configured to first information, wherein the first information indicates channel states corresponding to sets of reference signals, time resources respectively associated with the sets of reference signals partially and fully overlap, and each of the sets of reference signals comprises one or more reference signals; andtransmitting unit, configured to transmit first information, wherein the first information indicates channel states corresponding to the sets of reference signals.33.The communication apparatus of claim 31, comprising:receiving unit, configured to first information, wherein the first information indicates channel states corresponding to sets of reference signals, time resources respectively associated with the sets of reference signals partially and fully overlap, and each of the sets of reference signals comprises one or more reference signals; andprocessing unit, configured to process based on the first information.34.The communication apparatus of claim 31, comprising:generating unit, configured to generate at least one set of sets of reference signals, wherein time resources associated with the sets of reference signals partially or fully overlap, each of the sets of reference signals comprises one or more reference signals, and the sets of reference signals are from two or more network nodes; andtransmitting unit, configured to transmit the at least one set of the sets of reference signals.35.The communication apparatus of claim 31, comprising:receiving unit, configured to receive a set of reference signals that comprises one or more reference signals, wherein the set of reference signals is associated with a set of carriers, and the set of carriers is associated with at least one public land mobile network (PLMN) ; andtransmitting unit, configured to transmit first information, wherein the first information indicates a channel state corresponding to the set of reference signals.36.The communication apparatus of claim 31, comprising:transmitting unit, configured to transmit a set of reference signals that comprises one or more reference signals, wherein the set of reference signals is associated with a set of carriers, and the set of carriers is associated with at least one public land mobile networks (PLMN) ; andreceiving unit, configured to receive first information, wherein the first information indicates a channel state corresponding to the set of reference signals.37.The communication apparatus of claim 31, comprising:one or more processors, configured to perform processing step according to any one of claims 1 to 13, 14 to 26, 27, 28, 29 or 30;an interface circuit, configure to perform transmitting or receiving step according to any one of claims 1 to 13, 14 to 26, 27, 28, 29 or 30.38.The communication apparatus of claim 37, the interface circuit comprises one or more transceivers.39.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 13, 14 to 26, 27, 28, 29 or 30.40.A communication system, wherein the communication system comprises a first communication apparatus configured to perform the method of any one of claims 1 to 13 and a second communication apparatus configured to perform the method of any one of claims 14 to 26.41.The communication system according to claim 40, wherein the communication system further comprises a third communication apparatus configured to perform the method of claim 28.42.A communication system, wherein the communication system comprises a first communication apparatus configured to perform the method of claim 29 and a second communication apparatus configured to perform the method of claim 30.43.A computer-readable storage medium having instructions stored thereon which, when executed by apparatus, cause the apparatus to perform the method of any one of 1 to 13, 14 to 26, 27, 28, 29 or 30.44.A computer program product having instructions which, when executed, cause an apparatus to perform the method of any one of claims 1 to 13, 14 to 26, 27, 28, 29 or 30.
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