CN116916460A

CN116916460A - Apparatus and method for processing search space cluster group and transmission configuration index state

Info

Publication number: CN116916460A
Application number: CN202310392247.1A
Authority: CN
Inventors: 罗立中; 李建民; 陈仁贤
Original assignee: Acer Inc
Current assignee: Acer Inc
Priority date: 2022-04-15
Filing date: 2023-04-13
Publication date: 2023-10-20

Abstract

A communication device is used for monitoring and switching search space combination groups. The communication device includes a memory device storing instructions and processing circuitry executing the instructions: receiving, by the network, a configuration of a first search space combination group and a second search space combination group, the first search space combination group being associated with a transmission configuration indicator state and the second search space combination group being associated with a plurality of transmission configuration indicator states; monitoring one of the first search space combination group and the second search space combination group according to the configuration; receiving, by the network, first downlink control information for search space combination group switching when one of the first search space combination group or the second search space combination group is monitored according to the configuration; and performing search space combination group switching according to the first downlink control information.

Description

Apparatus and method for processing search space cluster group and transmission configuration index state

Technical Field

The present invention relates to an apparatus and method for a wireless communication system, and more particularly, to an apparatus and method for processing search space clusters (search space set group) and transmission configuration index (transmission configuration indicator) states.

Background

The third generation partnership project (the 3rd Generation Partnership Project,3GPP) has developed long term evolution (Long Term Evolution, LTE) systems with better performance for improving universal mobile telecommunications systems (Universal Mobile Telecommunications System, UMTS) that support the eighth version of the third generation partnership project (3 GPP Rel-8) standard and/or the ninth version of the third generation partnership project (3 GPP Rel-9) standard to meet increasing user needs. The lte system includes a new radio interface and radio network architecture that provides high data rates, low latency, packet optimization, and improved system capacity and coverage.

LTE-advanced (LTE-a) systems evolved from LTE systems, including advanced technologies such as carrier integration (carrier aggregation), coordinated multi-point (coordinated multipoint, coMP) transmission/reception, uplink (UL MIMO), and licensed-assisted access (LAA) using LTE to extend bandwidth, provide fast transition power states, improve carrier edge performance, and increase peak data rates and throughput.

Next generation radio access networks (next generation radio access network, NG-RAN) were developed to enhance the long term evolution advanced systems. The next generation wireless access network includes one or more next generation base stations (next generation Node-B, gNB), and features such as wider operating band, different parameter sets (numerology) for different frequency ranges, large-scale multiple-input multiple-output (MIMO), advanced channel coding, etc. The next generation of radio access networks support large-scale connections, high capacity, ultra-reliability (ultra-reliability) and low latency. These diversified scenarios require breaking through the traditional approach to implementing a new wireless system. In new wireless systems, a multi-transmission reception point (multi-transmission reception point) is critical to improve reliability, coverage and capacity performance through flexible deployment scenarios.

In the new wireless system, for high mobility user equipments (user equipments), dynamic switching between a single-Transmission Reception Point (TRP) and a plurality of transmission reception points (multi-TRP) is required to ensure reliability and capacity performance. However, a single transmission reception point and multiple transmission reception points configured by a radio resource control (radio resource control) and/or a Medium Access Control (MAC) Control Element (CE) cannot achieve dynamic switching. Therefore, there is a need for dynamic switching between a single transmission reception point and multiple transmission reception points using a search space cluster (SSSG) monitoring and a Transmission Configuration Index (TCI) state. Therefore, how to deal with the search space aggregation and transmission configuration index states is an important issue to be addressed.

Disclosure of Invention

Accordingly, the present invention provides a communication apparatus and communication method that handle the status of search space clusters (search space set group) and transmission configuration indicators (transmission configuration indicator) to ameliorate the above problems.

A communication device is provided for monitoring and switching search space combination groups (search space set group). The communication device comprises at least one storage device; and at least one processing circuit coupled to the at least one memory device, wherein the at least one memory device stores instructions, and the at least one processing circuit is configured to execute the instructions, the instructions comprising: receiving, by a network, a configuration of a first search space combination group and a second search space combination group, wherein the first search space combination group is associated with a transmission configuration indicator (transmission configuration indicator) status and the second search space combination group is associated with a plurality of transmission configuration indicator statuses; monitoring one of the first search space combination group and the second search space combination group according to the configuration; receiving, by the network, a first downlink control information (downlink control information) for a search space combination group handoff when monitoring the one of the first search space combination group or the second search space combination group according to the configuration; and performing the search space combination group switching according to the first downlink control information.

The present invention provides a network for monitoring and switching search space combination groups (search space set group). The network comprises at least one storage device; and at least one processing circuit coupled to the at least one memory device, wherein the at least one memory device stores an instruction, and the at least one processing circuit is configured to execute the instruction, the instruction comprising: generating an arrangement of a first search space combination group and a second search space combination group, wherein the first search space combination group is associated with a transmission configuration indicator (transmission configuration indicator) status and the second search space combination group is associated with a plurality of transmission configuration indicator statuses; transmitting the configuration to a communication device; generating a first downlink control information (downlink control information) for a search space combining group handoff; and transmitting the first downlink control information to the communication device.

The present invention provides a communication device for indicating and applying a transmission configuration indicator (transmission configuration indicator) status. The communication device comprises at least one storage device; and at least one processing circuit coupled to the at least one memory device, wherein the at least one memory device stores an instruction, and the at least one processing circuit is configured to execute the instruction, the instruction comprising: receiving downlink control information (downlink control information) from a network via a control resource combination (control resource set); wherein the downlink control information includes a transmission configuration indication Fu Lanwei and the transmission configuration indication Fu Lanwei indicates a transmission configuration indicator code point corresponding to at least one of a first transmission configuration indicator state or a second transmission configuration indicator state.

The present invention provides a network for indicating and applying a transmission configuration indicator (transmission configuration indicator) status. The network comprises at least one storage device; and at least one processing circuit coupled to the at least one memory device, wherein the at least one memory device stores an instruction, and the at least one processing circuit is configured to execute the instruction, the instruction comprising: generating a downlink control information (downlink control information); transmitting the downlink control information to a communication device via a control resource combination (control resource set); wherein the downlink control information includes a transmission configuration indication Fu Lanwei and the transmission configuration indication Fu Lanwei indicates a transmission configuration indicator code point corresponding to at least one of a first transmission configuration indicator state or a second transmission configuration indicator state.

Drawings

Fig. 1 is a schematic diagram of a wireless communication system according to an embodiment of the invention.

Fig. 2 is a schematic diagram of a communication device according to an embodiment of the invention.

FIG. 3 is a flow chart of a process according to an embodiment of the invention.

FIG. 4 is a flow chart of a process according to an embodiment of the invention.

FIG. 5 is a flow chart of a process according to an embodiment of the invention.

FIG. 6 is a flow chart of a process according to an embodiment of the invention.

FIG. 7 is a diagram illustrating a scenario in which search space clusters and transmission configuration index states are processed according to an embodiment of the present invention.

FIG. 8 is a diagram illustrating a scenario in which search space clusters and transmission configuration index states are processed according to an embodiment of the present invention.

FIG. 9 is a diagram illustrating a scenario in which search space clusters and transmission configuration index states are processed according to an embodiment of the present invention.

FIG. 10 is a diagram illustrating a scenario in which search space clusters and transmission configuration index states are processed according to an embodiment of the present invention.

FIG. 11 is a diagram illustrating a scenario in which search space clusters and transmission configuration index states are processed according to an embodiment of the present invention.

FIG. 12 is a diagram illustrating a scenario in which search space clusters and transmission configuration index states are processed according to an embodiment of the present invention.

FIG. 13 is a diagram illustrating a scenario in which search space clusters and transmission configuration index states are processed according to an embodiment of the present invention.

FIG. 14 is a diagram illustrating a scenario in which search space clusters and transmission configuration index states are processed according to an embodiment of the present invention.

FIG. 15 is a diagram illustrating a scenario in which search space clusters and transmission configuration index states are processed according to an embodiment of the present invention.

FIG. 16 is a diagram illustrating a scenario in which search space clusters and transmission configuration index states are processed according to an embodiment of the present invention.

FIG. 17 is a diagram illustrating a scenario in which search space clusters and transmission configuration index states are processed according to an embodiment of the present invention.

FIG. 18 is a diagram illustrating a scenario in which search space clusters and transmission configuration index states are processed according to an embodiment of the present invention.

FIG. 19 is a diagram illustrating a scenario in which search space clusters and transmission configuration index states are processed according to an embodiment of the present invention.

Fig. 20 is a diagram illustrating a transmission configuration indicator code point of a transmission configuration indicator Fu Lanwei in downlink control information according to an embodiment of the present invention.

Fig. 21 is a diagram illustrating a transmission configuration indicator code point of a transmission configuration indicator Fu Lanwei in downlink control information according to an embodiment of the present invention.

FIG. 22 is a diagram illustrating a scenario in which search space clusters and transmission configuration index states are processed according to an embodiment of the present invention.

FIG. 23 is a diagram illustrating a scenario in which search space clusters and transmission configuration index states are processed according to an embodiment of the present invention.

FIG. 24 is a diagram illustrating a scenario in which search space clusters and transmission configuration index states are processed according to an embodiment of the present invention.

Reference numerals illustrate:

10: wireless communication system

12: network system

14,20: communication device

200: at least one processing circuit

210: at least one memory device

214: program code

220: at least one communication interface device

30,40,50,60: process flow

70-240: scene(s)

300 ～ 310,400 ～ 410,500 ～ 504,600 ～ 606: step (a)

TRP1, TRP2, CPI1, CPI2: transmission receiving point

B1 to B4: beam

P1 to P4: location point

A: arrows

CD: communication device

PUCCH1, PUCCH2, PUCCH3: physical uplink control channel

DCI1, DCI2, DCI3: downlink control information

TP1, TP2, TP3: time period

TI1 to TI9: time of day

TCI 1-TCI 6: transmitting configuration index status

SSSG1, SSSG2: search space combination group

SG 1-SG 3: subgroup group

CORESET1 to CORESET3: controlling resource combinations

Detailed Description

Fig. 1 is a schematic diagram of a wireless communication system 10, which is schematically comprised of a network 12 and a plurality of communication devices 14, in accordance with an embodiment of the present invention. The wireless communication system 10 may support a time-division duplex (TDD) mode, a frequency-division duplex (FDD) mode, a combined time-division duplex and frequency-division duplex (TDD) mode of operation, a non-terrestrial network (NTN) mode, or an licensed-assisted access (LAA) mode. That is, network 12 and communication device 14 may communicate with each other over a frequency division duplex carrier, a licensed carrier (licensed service carrier), and/or an unlicensed carrier (or licensed service carrier). Further, wireless communication system 10 may support carrier integration (carrier aggregation). That is, network 12 and communication device 14 may communicate with each other via a plurality of serving carriers (e.g., a plurality of serving carriers) including one primary carrier (e.g., a primary component carrier) and one or more secondary carriers (e.g., secondary component carriers).

In fig. 1, network 12 and communication device 14 are used to illustrate the architecture of wireless communication system 10. In a universal mobile telecommunications system (Universal Mobile Telecommunications System, UMTS), the network 12 may be a universal terrestrial global radio access network (Universal Terrestrial Radio Access Network, UTRAN) that includes at least one base station (Node-B, NB). In one embodiment, in a long term evolution (Long Term Evolution, LTE) system, a long term evolution-advanced (LTE-a) system, an evolved version of the LTE-a system, and the like, the network 12 may be an evolved universal terrestrial global radio access network (evolved universal terrestrial radio access network, E-UTRAN) including at least one evolved NB (eNB) and/or at least one relay. In one embodiment, the network 12 may be a next generation radio access network (next generation radio access network, NG-RAN) including at least one next generation base station (next generation Node-B, gNB) and/or at least one fifth generation (5G) Base Station (BS). In one embodiment, network 12 may be any base station that conforms to a particular communication standard for communicating with communication device 14.

New Radio (NR) is a standard defined for fifth generation systems (or fifth generation networks) to provide a unified air interface with better performance. The next generation base stations are deployed to implement fifth generation systems that support advanced features such as enhanced mobile broadband (enhanced Mobile Broadband, emmbb), ultra-reliable low-latency communications (Ultra Reliable Low Latency Communications, URLLC), large-scale machine type communications (massive Machine Type Communications, mctc), and the like. The enhanced mobile broadband provides broadband services with a larger broadband and low/medium delay. Ultra-reliable low-latency communications provide applications such as point-to-point (end-to-end) communications with higher reliability and low latency characteristics. Examples of applications include industrial internet, smart grid, infrastructure protection, tele-surgery, and intelligent transportation systems (intelligent transportation system, ITS). Large-scale machine type communications can support internet of things (IoT) for fifth generation systems, which include billions of connected devices and/or sensors.

In addition, the network 12 may further include at least one of a universal terrestrial global radio access network/evolved universal terrestrial global radio access network/next generation radio access network and a core network, wherein the core network includes network entities such as a mobility management entity (Mobility Management Entity, MME), a Serving Gateway (S-GW), a packet data network (Packet Data Network, PDN) Gateway (P-GW), a Self-organizing network (Self-Organizing Networks, SON) server and/or a radio network controller (Radio Network Controller, RNC). In one embodiment, after the network 12 receives the information transmitted by the communication device 14, the information can be processed only by the umts/next generation wlan and a decision corresponding to the information can be made in the umts/umts. In one embodiment, the umts/umts may forward information to the core network, and after the core network processes the information, a determination is made in the core network corresponding to the information. In one embodiment, the information may be processed by the universal terrestrial global radio access network/evolved universal terrestrial global radio access network/next generation radio access network and core network, and the decisions made after the universal terrestrial global radio access network/evolved universal terrestrial global radio access network/next generation radio access network and core network perform coordination and/or cooperation.

The network 12 may further include a service provider and at least one transceiver base station (base transceiver station). A service provider may be an organization that provides services (e.g., consultation, law, real estate, communication, storage, or processing services). The at least one transceiver station may be at least one base station, an evolved base station, at least one next generation base station, and/or at least one 5G base station. The service provider may transmit the service data to the transceiver base station, which may forward the service data to a communication device 14. In one embodiment, the service data may be service information such as network security, ring tone music, electronic reading, daily applications, bill collection, and the like. In one embodiment, the service data may be movie and/or audio source data (e.g., in the format h.265, h.266, AV1, or MPEG-4 compliant (Moving Picture Experts Group 4)). In one embodiment, the service data may be an augmented reality (augmented reality, AR), a Virtual Reality (VR), a Mixed Reality (MR), and/or an extended reality (XR). The service provider may generate corresponding data based on information associated with a communication device 14 (e.g., a geographic location of the communication device 14, bluetooth information of the communication device 14, information stored at the communication device 14 of the service provider).

The communication device 14 may be a User Equipment (UE), a low cost device (e.g., a machine type communication (machine type communication, MTC) device), a device-to-device (D2D) communication device, a narrowband internet of things (NB-IoT), a mobile phone, a notebook, a tablet, an electronic book, a portable computer system, or a combination thereof. In addition, the network 12 and the communication device 14 can be considered as a transmitting end or a receiving end, respectively, according to the transmission direction. For example, for an Uplink (UL), the communication device 14 is the transmitting end and the network 12 is the receiving end; for Downlink (DL), the network 12 is the transmitting end and the communication device 14 is the receiving end.

Fig. 2 is a schematic diagram of a communication device 20 according to an embodiment of the invention. Communication device 20 may be, but is not limited to, communication device 14 or network 12 of fig. 1. The communication device 20 may include at least one processing circuit 200, at least one storage device 210, and at least one communication interface device 220. The at least one processing circuit 200 may be a microprocessor or an Application-specific integrated circuit (ASIC). The at least one memory device 210 may be any data storage device configured to store the program code 214, and the at least one processing circuit 200 may read and execute the program code 214 via the at least one memory device 210. For example, the at least one Memory device 210 may be a subscriber identity module (Subscriber Identity Module, SIM), a Read-Only Memory (ROM), a flash Memory (flash Memory), a Random-Access Memory (RAM), a Compact Disc ROM (CD-ROM), a digital versatile Disc ROM (digital versatile Disc-ROM), a Blu-ray Disc ROM (BD-ROM), a magnetic tape (magnetic tape), a hard disk (hard disk), an optical data storage device (optical data storage device), a non-volatile storage device (non-volatile storage device), a non-transitory computer readable medium (such as a specific medium (tan-transitory computer-readable medium)), or the like, without being limited thereto. The at least one communication interface 220 may include at least one wireless transceiver for transmitting and receiving signals (e.g., data, information, and/or packets) based on processing results of the at least one processing circuit 200.

FIG. 3 is a flow chart of a process 30 according to an embodiment of the invention. The process 30 may be used with a communication device (e.g., a communication device 14 of fig. 1 or a communication device 20 of fig. 2) to monitor and switch search space clusters (search space set group). The process 30 may be compiled into the program code 214 and includes the following steps:

step 300: starting.

Step 302: a configuration of a first set of search spaces and a second set of search spaces is received by the network, wherein the first set of search spaces is associated with a transmission configuration index (transmission configuration indicator) state and the second set of search spaces is associated with a plurality of transmission configuration index states.

Step 304: one of the first and second search space clusters is monitored according to the configuration.

Step 306: a first downlink control information (DL control information) of a search space cluster switch is received by the network while one of the first search space cluster and the second search space cluster is monitored according to the configuration.

Step 308: the performing of the search space set group switch is based on the first downlink control information.

Step 310: and (5) ending.

According to the process 30, the communication device receives a configuration of a first set of search spaces and a second set of search spaces from the network, wherein the first set of search spaces is associated with a transmission configuration index state and the second set of search spaces is associated with a plurality of transmission configuration index states. The communication device is configured to have a first set of search spaces and a second set of search spaces. Then, the communication device monitors one of the first search space cluster and the second search space cluster according to the configuration, and receives a first downlink control information of a search space cluster switch by the network when monitoring one of the first search space cluster or the second search space cluster according to the configuration. The communication device performs search space set group switching according to the first downlink control information. That is, the search space set group switch is based on configuration and downlink control information received by the network. Thus, dynamic switching between a single transmission reception point and multiple transmission reception points may be achieved according to search space set group switching.

Implementation of the process 30 is not limited to the above description, and the following embodiments may be used to implement the process 30.

In an embodiment, the first set of search spaces is associated with at least one control resource combination (control resource set), and each of the at least one control resource combination is associated (e.g., enabled or indicated) with one transmission configuration index state. In an embodiment, the second set of search spaces is associated with a control resource combination, and the control resource combination is associated (e.g., enabled or indicated) with a plurality of transmission configuration index states. In an embodiment, the second set of search spaces is associated with a plurality of control resource combinations, and the control resource combinations are respectively associated (e.g., enabled or indicated) with a plurality of transmission configuration index states.

In one embodiment, the first downlink control information includes a field. In addition, step 308 includes switching to the first search space cluster and monitoring the first search space cluster according to the transmission configuration index status when the field indicates the transmission configuration index status. Step 308 further includes switching to the second search space cluster and monitoring the second search space cluster according to the plurality of transmission configuration index states when the field indicates the plurality of transmission configuration index states.

In one embodiment, the first downlink control information includes a first field and a second field. In addition, step 308 includes switching to the first search space cluster and monitoring the first search space cluster according to the transmission configuration index status when the first field indicates the transmission configuration index status and the second field indicates the first search space cluster. Step 308 further includes switching to the second search space cluster and monitoring the second search space cluster according to the plurality of transmission configuration index states when the first field indicates the plurality of transmission configuration index states and the second field indicates the second search space cluster.

In one embodiment, the first downlink control information includes a first field and a second field. In addition, step 308 includes switching to the second search space cluster and monitoring the second search space cluster according to the transmission configuration index status when the first field indicates the transmission configuration index status and the second field indicates the second search space cluster. In detail, the communication device monitors a first subgroup of the second search space set and a second subgroup of the second search space set according to the transmission configuration index state. In an embodiment, at least one set of search spaces (search spaces) in the first subgroup corresponds to at least one second set of search spaces in the second subgroup, respectively. In one embodiment, a first control resource combination associated with a first subgroup and a second control resource combination associated with a second subgroup are both associated with the same transmission configuration index state.

In one embodiment, a communication device communicates information to a network. The information may include a direction of movement, a speed, and/or a location of the communication device. In one embodiment, the first downlink control information includes a first field and a second field indicating a time period. In addition, step 308 includes switching to the first search space cluster at the end of the time period and monitoring the first search space cluster according to the transmission configuration index status when the first field indicates the transmission configuration index status. Step 308 further comprises switching to the second search space cluster at the end of the time period and monitoring the second search space cluster according to the plurality of transmission configuration index states when the first field indicates the plurality of transmission configuration index states. In one embodiment, the time period is between a first time when the first downlink control information is received by the network and a second time when the search space cluster handover is performed. In one embodiment, the time period is between a first time instant at which a hybrid automatic repeat request (Hybrid Automatic Repeat Request) feedback corresponding to the first downlink control information is transmitted and a second time instant at which the search space cluster handover is performed.

In one embodiment, the first downlink control information includes a field indicating a period of time. In addition, step 308 includes, when the second set of search spaces is monitored, the communication device switching to the first set of search spaces at the end of the time period and monitoring the first set of search spaces according to the transmission configuration index state. Step 308 further includes, when monitoring the first search space cluster, the communication device switching to the second search space cluster at the end of the time period and monitoring the second search space cluster according to the plurality of transmission configuration index states.

In one embodiment, step 308 comprises the communication device starting a timer when the first downlink control information is received by the network and monitoring a second set of search spaces associated with a plurality of transmission configuration index states. Step 308 further comprises switching to a predetermined search space combination group and monitoring the predetermined search space combination group according to one of the plurality of transmission configuration index states when the timer expires. Step 308 further comprises restarting the timer when the network receives a second downlink control information and monitors a second set of search spaces associated with a plurality of transmission configuration index states. In one embodiment, the predetermined search space combination group is predetermined (e.g., a search space combination group having a lowest index) or indicated by the network.

In one embodiment, the first downlink control information includes a first field indicating a status of a plurality of transmission configuration indicators and a second field indicating a time period. In addition, step 308 includes the communication device monitoring the first search space cluster according to one of a plurality of transmission configuration index states (e.g., a predetermined transmission configuration index state). Step 308 further comprises the communication device switching to the second search space cluster at the end of the time period and monitoring the second search space cluster according to the plurality of transmission configuration index states. In one embodiment, one of the transmission configuration index states is predetermined (e.g., by the network) or indicated by a media access control (media access control) control unit (control element).

In one embodiment, the first downlink control information includes a first field indicating one of a plurality of transmission configuration index states and a second field indicating a first time period. In addition, step 308 includes the communication device monitoring the first search space cluster according to one of the plurality of transmission configuration index states. Step 308 further includes the communication device receiving a second downlink control information. The second downlink control information includes a third field indicating a plurality of transmission configuration index states and a fourth field indicating a second time period. Step 308 further comprises the communication device switching to the second search space cluster at the end of the second time period and monitoring the second search space cluster according to the plurality of transmission configuration index states. In an embodiment, the end of the first time period and the end of the second time period are at the same time.

In one embodiment, the first downlink control information includes a first field and a second field. In addition, step 308 includes switching to the first search space cluster and monitoring the first search space cluster according to the transmission configuration index status when the first field indicates the transmission configuration index status and the second field indicates that a first search space cluster monitoring associated with a first value of a control resource combination pool index is disabled. Step 308 further comprises switching to the second search space cluster and monitoring the second search space cluster according to the plurality of transmission configuration index states when the first field indicates a plurality of transmission configuration index states and the second field indicates that a second search space cluster monitoring associated with a second value of the control resource combination pool index is enabled. In an embodiment, the first downlink control information is associated with one of a first control resource combination pool index and a second control resource combination pool index. In an embodiment, the communication device receives first downlink control information by a network (e.g., a transmission reception point (transmission reception point) of the network) indicated by one of the first control resource combination pool index and the second control resource combination pool index.

In one embodiment, the first downlink control information includes a field indicating a status of the transmission configuration index. In addition, step 308 includes switching to the first search space cluster and monitoring the first search space cluster according to the transmission configuration index status when the field indicates the transmission configuration index status. In one embodiment, the first downlink control information is associated with a control resource combination pool index. In an embodiment, the communication device receives downlink control information from a network (e.g., a transmission reception point of the network) indicated by the control resource combination pool index. In an embodiment, the (first) field or the plurality of transmission configuration index states indicating the transmission configuration index state is a transmission configuration indicator field having a transmission configuration indicator code point.

Fig. 4 is a flow chart of a process 40 according to an embodiment of the invention. Flow 40 may be used in a network (e.g., network 12 in fig. 1 or communication device 20 in fig. 2) to monitor and switch search space combination groups. The process 40 may be compiled into the program code 214 and includes the following steps:

step 400: starting.

Step 402: a configuration of a first set of search spaces and a second set of search spaces is generated, wherein the first set of search spaces is associated with a transmission configuration index state and the second set of search spaces is associated with a plurality of transmission configuration index states.

Step 404: transmitting the configuration to a communication device.

Step 406: first downlink control information for a search space set group handoff is generated.

Step 408: first downlink control information is transmitted to the communication device.

Step 410: and (5) ending.

According to flow 40, the network generates a configuration of a first search space cluster and a second search space cluster and transmits the configuration to a communication device. The first set of search spaces is associated with a transmission configuration index state and the second set of search spaces is associated with a plurality of transmission configuration index states. Then, the network generates a first downlink control information for a search space group handover and transmits the first downlink control information to the communication device. That is, the communication device may perform a search space set group handoff based on configuration and downlink control information received by the network. Thus, dynamic switching between a single transmission reception point and multiple transmission reception points may be achieved according to search space set group switching.

Implementation of the process 40 is not limited to the above description, and the following embodiments may be used to implement the process 40.

In one embodiment, the first downlink control information includes a first field indicating a transmission configuration index state or a plurality of transmission configuration index states. In one embodiment, the first downlink control information further includes a second field indicating a time period. In one embodiment, the time period is between a first time when the communication device receives the first downlink control information from the network and a second time when the communication device performs the search space cluster handoff. In one embodiment, the time period is between a first time when the communication device transmits a hybrid automatic repeat request feedback corresponding to the first downlink control information and a second time when the communication device performs search space cluster switching. Alternatively, the first downlink control information further includes a second field indicating that a first search space set group monitor associated with a first control resource combination pool index is disabled or a second search space set group monitor associated with a second control resource combination pool index is enabled. In an embodiment, the first downlink control information is associated with one of a first control resource combination pool index and a second control resource combination pool index. In an embodiment, the first downlink control information is transmitted to the communication device by a network indicated by one of the first control resource combination pool index and the second control resource combination pool index. Alternatively, the first downlink control information further includes a second field indicating the first search space set or the second search space set.

In one embodiment, the first downlink control information includes a field indicating a period of time. In one embodiment, the network generates a second downlink control information for search space group handover and transmits the second downlink control information to the communication device. In one embodiment, the first downlink control information includes a first field indicating one of a plurality of transmission configuration index states and a second field indicating a first time period, and the second downlink control information includes a third field indicating the plurality of transmission configuration index states and a fourth field indicating a second time period. In one embodiment, the end of the first time period and the end of the second time period are at the same time.

The embodiment of flow 30 may be applied to flow 40 and will not be described herein for the sake of brevity.

Fig. 5 is a flow chart of a process 50 according to an embodiment of the invention. The process 50 may be used in a communication device (e.g., communication device 14 of fig. 1 or communication device 20 of fig. 2) to indicate and apply a transmission configuration index status. The process 50 may be compiled into the program code 214 and includes the following steps:

step 500: starting.

Step 502: a downlink control information is received by the network via a control resource combination.

Step 504: and (5) ending.

According to the process 50, the communication device receives a downlink control message from the network via a control resource combination. The downlink control information includes a transmission configuration indicator Fu Lanwei, and the transmission configuration indicator Fu Lanwei indicates a transmission configuration indicator code point corresponding to at least one of a first transmission configuration index state or a second transmission configuration index state. Thus, dynamic switching between a single transmission reception point and multiple transmission reception points may be achieved in accordance with at least one of the first transmission configuration index state or the second transmission configuration index state.

Implementation of the flow 50 is not limited to the above description, and the following embodiments may be used to implement the flow 50.

In an embodiment, the first transmission configuration index state is a downlink transmission configuration index state or an uplink transmission configuration index state, and the second transmission configuration index state is a downlink transmission configuration index state or an uplink transmission configuration index state. In an embodiment, the control resource combination is configured with at least one transmission configuration index state indicated by the downlink control information, and the at least one transmission configuration index state comprises at least one of a first transmission configuration index state or a second transmission configuration index state. In one embodiment, a communication device receives at least one physical downlink control channel (physical DL control channel) from a network based on at least one transmission configuration index state through a control resource combination. A demodulation reference signal (demodulation reference signal) antenna end of at least one physical downlink control channel and a plurality of reference signals provided by at least one transmission configuration index state are quasi co-located (quasi co-located) by controlling resource combinations.

In an embodiment, the control resource combination is associated with at least one of a plurality of user device specific search space (UE specific search space) combinations or a plurality of physical downlink control channel common search space (common search space) combinations. The plurality of physical downlink control channel common search space combinations may be type 3 physical downlink control channel common search space combinations, but is not limited thereto. In one embodiment, the control resource combination is configured with a value of a control resource combination pool index, and the value of the control resource combination pool index is associated with at least one of a first transmission configuration index state or a second transmission configuration index state. In one embodiment, the control resource combinations are included in a search space combination group. In an embodiment, the transmission configuration indicator Fu Lanwei indicates at least one of a first transmission configuration indicator state or a second transmission configuration indicator state in a component carrier (component carrier) combination or a bandwidth part (bandwidth part) combination in a component carrier list. In one embodiment, the communication device receives an enable command from the network to map a plurality of transmission configuration index states to at least one transmission configuration indicator code point of the transmission configuration indicator field.

In one embodiment, the communication device transmits an physical uplink control channel (physical UL control channel) to the network according to a spatial setting associated with at least one transmission configuration index state, wherein the at least one transmission configuration index state comprises at least one of a first transmission configuration index state or a second transmission configuration index state. In one embodiment, the transmission configuration indicator code point is associated with a value of a control resource combination pool index. In one embodiment, if the transmission configuration indicator code point corresponds to a first transmission configuration indicator state and a second transmission configuration indicator, the first transmission configuration indicator state and the second transmission configuration indicator are associated with a same value of a control resource combination pool index. In one embodiment, the communication device transmits an physical uplink control channel corresponding to downlink control information including a transmission configuration index status indication to the network, wherein a final symbol of the physical uplink control channel includes hybrid automatic repeat request feedback. In an embodiment, the communication device starts applying at least one of the first transmission configuration index state or the second transmission configuration index state indicated by the transmission configuration index indication Fu Lanwei from a time slot, wherein the time slot is at least time for beam application symbols after a final symbol of the physical uplink control channel, if the at least one of the first transmission configuration index state or the second transmission configuration index state is different from a previous transmission configuration index state indicated by a previous transmission configuration index state indication.

Embodiments of flow 30 and flow 40 may be applied to flow 50 and, for brevity, are not described herein.

Fig. 6 is a flow chart of a process 60 according to an embodiment of the invention. The process 60 may be used with a network (e.g., the network 12 of fig. 1 or the communication device 20 of fig. 2) to indicate and apply the transmission configuration index status. The process 60 may be compiled into the program code 214 and includes the following steps

Step 600: starting.

Step 602: generating a downlink control information.

Step 604: the downlink control information is transmitted to a communication device via a control resource combination.

Step 606: and (5) ending.

According to flow 60, the network generates downlink control information and transmits the downlink control information to a communication device via a control resource combination. The downlink control information includes a transmission configuration indicator Fu Lanwei, and the transmission configuration indicator Fu Lanwei indicates a transmission configuration indicator code point corresponding to at least one of a first transmission configuration index state or a second transmission configuration index state. That is, the communication device receives downlink control information indicating at least one of the first transmission configuration index state or the second transmission configuration index state. Thus, dynamic switching between a single transmission reception point and multiple transmission reception points may be achieved in accordance with at least one of the first transmission configuration index state or the second transmission configuration index state.

In an embodiment, the first transmission configuration index state is a downlink transmission configuration index state or an uplink transmission configuration index state, and the second transmission configuration index state is a downlink transmission configuration index state or an uplink transmission configuration index state. In an embodiment, the control resource combination is configured with at least one transmission configuration index state indicated by the downlink control information, and the at least one transmission configuration index state comprises at least one of a first transmission configuration index state or a second transmission configuration index state. In one embodiment, the network transmits at least one physical downlink control channel to the communication device via the control resource combination according to at least one transmission configuration index state. The plurality of reference signals provided by the at least one transmission configuration index state and a demodulation reference signal antenna end of the at least one physical downlink control channel received through the control resource combination are quasi co-located.

In an embodiment, the control resource combination is associated with at least one of a plurality of user device specific search space combinations or a plurality of physical downlink control channel common search space combinations. The plurality of physical downlink control channel common search space combinations may be type 3 physical downlink control channel common search space combinations, but is not limited thereto. In one embodiment, the control resource combination is configured with a value of a control resource combination pool index, and the value of the control resource combination pool index is associated with at least one of a first transmission configuration index state or a second transmission configuration index state. In one embodiment, the control resource combinations are included in a search space combination group. In an embodiment, the transmission configuration indicator Fu Lanwei indicates at least one of a first transmission configuration index state or a second transmission configuration index state in a component carrier combination or a bandwidth part combination in a component carrier list. In one embodiment, the network transmits an enable command to the communication device to map a plurality of transmission configuration index states to at least one transmission configuration indicator code point of the transmission configuration indicator field.

In one embodiment, the network receives an physical uplink control channel from the communication device according to a spatial setting associated with at least one transmission configuration index state, wherein the at least one transmission configuration index state comprises at least one of a first transmission configuration index state or a second transmission configuration index state. In one embodiment, the transmission configuration indicator code point is associated with a value of a control resource combination pool index. In one embodiment, if the transmission configuration indicator code point corresponds to a first transmission configuration index state and a second transmission configuration index state, the first transmission configuration index state and the second transmission configuration index state are associated with a same value of a control resource combination pool index. In one embodiment, the network receives, by the communication device, a physical uplink control channel corresponding to downlink control information including a transmission configuration index status indication, wherein a final symbol of the physical uplink control channel includes hybrid automatic repeat request feedback. In an embodiment, if at least one of the first transmission configuration index state or the second transmission configuration index state is different from a previous transmission configuration index state indicated by a previous transmission configuration index state indication, starting to apply at least one of the first transmission configuration index state or the second transmission configuration index state indicated by the transmission configuration index state indication by a time slot, wherein the time slot is at least time for beam application symbols after a final symbol of the physical uplink control channel.

The embodiments of the processes 30 to 50 may be applied to the process 60, which is not described herein for the sake of brevity.

The following embodiments may be applied to the flows 30 to 60.

In an embodiment, the downlink control information (e.g., the first/second downlink control information in flows 30-40 or the downlink control information in flows 50-60) is associated with at least one search space combination, the at least one search space combination is associated with at least one control resource combination, and the at least one control resource combination is associated with (e.g., enabled by) at least one transmission configuration index state. For example, the downlink control information is associated with a search space combination that is associated with a control resource combination that is enabled by a transmission configuration index state. For example, the downlink control information is associated with a plurality of search space combinations, the plurality of search space combinations are respectively associated with a plurality of control resource combinations, and the plurality of control resource combinations are respectively enabled by a plurality of transmission configuration index states. The plurality of search space combinations correspond to each other. For example, the downlink control information is associated with a search space combination, the search space combination is associated with a control resource combination, and the control resource combination is enabled by a plurality of transmission configuration index states.

In one embodiment, a control resource combination is configured with a value of a control resource combination pool index. In one embodiment, the downlink control information includes a downlink allocation. In an embodiment, the downlink control information does not include a downlink allocation. If the downlink control information does not include downlink allocations, the communication device decides to scramble the downlink control information with a radio network temporary identifier (radio network temporary identifier) (e.g., CS-RNTI) for a cyclic redundancy test (cyclic redundancy check), and decides that a redundancy version (redundancy version) parameter is "1", a modulation code scheme (modulation coding scheme) parameter is "1", a new data index (new data indicator) is "0", a frequency domain resource allocation (frequency domain resource allocation) type 0 parameter is "0", a frequency domain resource allocation type 1 parameter is "1", and a dynamic handover parameter is "0".

In one embodiment, the communication device configures a transmission configuration index status configuration list by a radio resource control (radio resource control). In one embodiment, when the communication device is configured with at least one transmission configuration index state for the uplink, the communication device performs a physical uplink shared channel (physical uplink shared channel) transmission using a configured grant. The configured authorization may be a configured type 1 authorization, a type 2 authorization, or a dynamic authorization.

In one embodiment, the communication device transmits (e.g., reports) at least one function to the network. The at least one function may instruct the communication device whether to support at least one of: a search space set group switch determined by the downlink control information; a timer for switching to a predetermined search space combination group; a predetermined transmission configuration index state indicated by a media access control unit for monitoring the predetermined search space combination group; a predetermined transmission configuration index state for monitoring the predetermined search space combination group; an index indicating a time period for the search space group switch in the downlink control information; a transmission configuration index state configured by a radio resource control for a search space group handover/monitoring; a transmission configuration index state indicated by the downlink control information for search space group handover/monitoring; enabling/disabling search space set group switching associated with a value of a control resource combination pool index; and a channel/reference signal grouped by downlink control information.

In an embodiment, the transmission configuration indicator code point of the transmission configuration indicator Fu Lanwei in the downlink control information indicates two transmission configuration index states (e.g., a plurality of transmission configuration index states in flows 30 and 40, or a first transmission configuration index state and a second transmission configuration index state in flows 50 and 60). The two transmission configuration index states are respectively associated with two sets of channels/reference signals. The communication device applies two transmission configuration index states according to the transmission configuration indicator code point. In one embodiment, the transmission configuration indicator code point of the transmission configuration indicator Fu Lanwei in the downlink control information indicates one transmission configuration indicator state (e.g., the transmission configuration indicator state in flows 30 and 40, or the first transmission configuration indicator state or the second transmission configuration indicator state in flows 50 and 60). One transmission configuration index state is associated with two sets of channels/reference signals or with one of the two sets of channels/reference signals. The communication device applies a transmission configuration index state according to the transmission configuration indicator code point. In one embodiment, the downlink control information includes at least one transmission configuration indicator field. The at least one transmission configuration indicator field comprises at least one transmission configuration indicator code point associated with at least one channel/reference signal.

In one embodiment, a set of channel/reference signals includes at least one of the following information: a control resource pool index (a value); an (index of) search space combinations; an (index of) control resource combinations; an physical downlink shared channel (physical downlink shared channel), an index of (an index of) a group of code allocation multiplexing (code division multiplexing) of physical downlink shared channels; an (index of an) antenna portion of a demodulation reference signal for a physical downlink shared channel; an index of (a) a semi-static schedule (semi persistent scheduling) configuration; an index of (a) channel state information reference signal (channel state information RS) resources; an (index of a) channel state information reference signal group; an (index of an) physical uplink control channel resource group; an (index of) physical uplink control channel resources; an (index of an) allocated multiplexing group of an uplink shared channel; an (index of an) antenna portion of a demodulation reference signal of an uplink shared channel; an (index of) authorization configuration; an index of (a) sounding reference signal (sound reference signal) resources; and (an index of) a sounding reference signal (sound reference signal) group.

In one embodiment, the transmission configuration indicator code point of the transmission configuration indicator Fu Lanwei in the downlink control information comprises at least one bit and indicates at least one transmission configuration index status. At least one bit is associated with at least one group of channels/reference signals, respectively. For example, a transmission configuration indicator code point includes four bits "0101" associated with four groups of channels/reference signals, respectively. When the first bit is "0", the communication device applies a first transmission configuration index state to the first set of channels/reference signals; when the second bit is "1", the communication device applies a second transmission configuration index state to the second set of channel/reference signals; when the third bit is "0", the communication device applies the first transmission configuration index state to the third set of channels/reference signals; when the fourth bit is "1", the communication device applies the second transmission configuration index state to the fourth set of channels/reference signals.

In one embodiment, the number of at least one bit included in the transmission configuration indicator code point is determined according to at least one of the following information: at least one control resource combination pool index; a number of at least one search space combination; at least one control resource combination; a number of at least one code allocation multiplexing group of an physical downlink shared channel; a number of at least one antenna portion of a demodulation reference signal for a physical downlink shared channel; a number of at least one half of the static scheduling configurations; at least one physical uplink control channel resource group (each at least one physical uplink control channel resource group comprising at least one physical uplink control channel resource); a quantity of at least one physical uplink control channel resource; a number of at least one code allocation multiplexing group of an uplink shared channel; a number of at least one antenna portion of a demodulation reference signal of an uplink shared channel; a number of at least one authorization configuration; at least one channel state information reference signal resource; at least one channel state information reference signal group; a number of at least one sounding reference signal resource; and a number of at least one sounding reference signal group.

In one embodiment, the downlink control information includes a transmission configuration indicator Fu Lanwei having a transmission configuration indicator code point and a packet field having a packet code point. The transmission configuration indicator code point indicates at least one transmission configuration index state of the plurality of transmission configuration index states, and the group code point indicates at least one group of channels/reference signals. Tables 1 and 2 are examples for explaining the packet code points. For example, assume that the plurality of transmission configuration index states are transmission configuration index states tci_state_a and tci_state_b, and the packet code point is "5". According to table 1, the first group channel/reference signal and the third group channel/reference signal are associated with a transmission configuration index state tci_state_a, and the second group channel/reference signal and the 4 th group channel/reference signal are associated with a transmission configuration index state tci_state_b. According to table 2, the first group channel/reference signal and the second group channel/reference signal are associated with a transmission configuration index state tci_state_a, and the first group channel/reference signal is associated with a transmission configuration index state tci_state_b.

TABLE 1

TABLE 2

In one embodiment, the downlink control information includes a transmission configuration indicator field having a transmission configuration indicator code point, a first packet field having a first packet code point, and a second packet field having a second packet code point. The transmission configuration indicator code point indicates at least one transmission configuration index state of the plurality of transmission configuration index states. The first group code point indicates at least one set of channels/reference signals associated with a first one of the plurality of transmission configuration index states. The second packet code point indicates at least one set of channel/reference signals associated with a second transmission configuration index state of the plurality of transmission configuration index states. Tables 3 and 4 are examples for explaining the first packet code point and the second packet code point, respectively. For example, assume that the plurality of transmission configuration index states are transmission configuration index states tci_state_c and tci_state_d, the first packet code point is "4", and the second packet code point is "6". According to tables 3 and 4, the first and second sets of channels/reference signals are associated with a transmission configuration index state tci_state_c, and the second and third sets of channels/reference signals are associated with a transmission configuration index state tci_state_d.

TABLE 3 Table 3

TABLE 4 Table 4

Tables 1 to 4 are examples for explaining packet code points, but the present invention is not limited thereto.

In an embodiment, the search space combination group (e.g., the first search space group or the second search space group) may be a search space group (search space group), a control resource combination pool index, or a control resource combination group, but is not limited thereto. In one embodiment, the index or identity may be a control resource combination pool index, an identity of a transmission receiving point, or an identity of a panel, but is not limited thereto. In an embodiment, the communication device may be configured with at least one of the following information to the plurality of transmission receiving points: a combined control resource combining pool index, a combined transmission receiving point and a combined panel, but is not limited thereto.

FIG. 7 is a diagram of a scenario 70 of processing search space clusters and transmission configuration index states according to one embodiment of the present invention. Fig. 7 can be applied to fig. 1 to 6. In fig. 7 there is a communication device CD and a network (not shown) with two transmission reception points TRP1 to TRP 2. The transmission reception point TRP1 comprises beams B1 to B2, and the transmission reception point TRP2 comprises beams B3 to B4. The transmission configuration index states TCI1 to TCI4 and the search space combination groups SSSG1 to SSSG2 are used to perform a single transmission reception point operation or a plurality of transmission reception point operations. The transmission configuration index states TCI 1-TCI 4 are associated with beams B1-B4, respectively. A search space combination group SSSG1 is associated with one of the transmission configuration index states TCI 1-TCI 4, and a search space combination group SSSG2 is associated with at least two of the transmission configuration index states TCI 1-TCI 4. The communication device CD moves from left to right according to a movement direction arrow a. The moving direction arrow a has position points P1 to P4. The communication device CD performs a single transmission-reception point operation with the transmission-reception point TRP1 between the position points P1 to P2, performs a plurality of transmission-reception point operations with the transmission-reception points TRP1 to TRP2 between the position points P2 to P3, and performs a single transmission-reception point operation with the transmission-reception point TRP2 between the position points P3 to P4. In addition, there are times TI 1-TI 3 and a time period TP1 in a time dimension T.

In fig. 7, the communication device CD performs a single transmission-reception point operation with the transmission-reception point TRP1 between the position points P1 to P2 (for example, before the time instant TI 3). At time TI1, the communication device CD receives downlink control information DCI1 at a transmission reception point TRP 1. At time TI2, the communication device CD transmits an physical uplink control channel PUCCH1 corresponding to a hybrid automatic repeat request feedback of the downlink control information DCI1 to the transmission receiving point TRP 1.

In one embodiment, the downlink control information DCI1 includes a transmission configuration indicator Fu Lanwei (or a transmission configuration indicator indication) having a transmission configuration indicator code point indicating transmission configuration indicator states TCI 2-TCI 3. At time TI3, the communication device CD switches to the search space combination group SSSG2 according to the transmission configuration indication Fu Lanwei indicating at least two of the transmission configuration index states TCI1 to TCI 4.

In one embodiment, the downlink control information DCI1 includes a transmission configuration indicator Fu Lanwei (or transmission configuration indicator indication) having transmission configuration indicator code points indicating transmission configuration indicator states TCI 2-TCI 3, and includes a search space set group switch field indicating search space combination group 2. At time TI3, the communication device CD switches to the search space group SSSG2 according to the search space group switching field indicating the search space group 2.

Thus, between the position points P2-P3 (e.g., after time TI 3), the communication device CD performs a plurality of transmission-reception point operations with the transmission-reception points TRP 1-TRP 2 according to the transmission configuration index states TCI 2-TCI 3 and the search-space-combination group SSSG2 (e.g., the search-space-combination group SSSG2 is monitored according to the transmission configuration index states TCI 2-TCI 3). In addition, the time period TP1 between the timings TI2 to TI3 is a time for beam application. After a time period TP1 following a final symbol of the physical uplink control channel PUCCH1, the communication device CD applies the transmission configuration index states TCI 2-TCI 3 indicated by the downlink control information DCI1 and/or switches the search space combination group.

FIG. 8 is a diagram of a scenario 80 for handling search space clustering and transmission configuration index status according to one embodiment of the present invention. Fig. 8 can be applied to fig. 1 to 7. In fig. 8, a communication device CD, a network (not shown) having two transmission receiving points TRP1 to TRP2, beams B1 to B4, transmission configuration index states TCI1 to TCI4, search space combination groups SSSG1 to SSSG2, a moving direction arrow a, and location points P1 to P4 can refer to fig. 7, and the description is not repeated for brevity. In addition, there are times TI 4-TI 6 and a time period TP2 in a time dimension T.

In fig. 8, between the position points P2-P3 (e.g., before the time TI 6), the communication device CD performs a plurality of transmission-reception point operations according to the transmission configuration index states TCI 2-TCI 3 and the search-space-combination group SSSG2 (e.g., monitors the search-space-combination group SSSG2 according to the transmission configuration index states TCI 2-TCI 3) and the transmission-reception points TRP 1-TRP 2. At time TI4, communication apparatus CD receives downlink control information DCI2 from transmission reception point TRP1 and/or transmission reception point TRP2. At time TI5, the communication device CD transmits an physical uplink control channel PUCCH2 corresponding to a hybrid automatic repeat request feedback of the downlink control information DCI2 to the transmission reception point TRP1 and/or the transmission reception point TRP2.

In an embodiment, the downlink control information DCI2 includes a transmission configuration indicator code point-transmission configuration indicator Fu Lanwei (or a transmission configuration indicator indication) indicating the transmission configuration indicator state TCI 4. At time TI6, the communication device CD switches to the search space combination group SSSG1 according to the transmission configuration indicator Fu Lanwei indicating one of the transmission configuration indicator states TCI1 to TCI 4.

In one embodiment, the downlink control information DCI2 includes a transmission configuration indicator Fu Lanwei (or TCI indicator) having a transmission configuration indicator code point indicating a transmission configuration index state TCI4, and includes a search space set group switch field indicating a search space set group SSSG1. At time TI6, the communication device CD switches to the search space group SSSG1 according to the search space group switching field indicating the search space group SSSG1.

Thus, between the position points P3-P4 (e.g., after time TI 6), the communication device CD performs a single transmission-reception point operation with the transmission-reception point TRP2 according to the transmission configuration index state TCI4 and the search-space combination group SSSG1 (e.g., the search-space combination group SSSG1 is monitored according to the transmission configuration index state TCI 4). Further, the time period TP2 between the timings TI5 to TI6 is a time for beam application. After a time period TP2 following a final symbol of the physical uplink control channel PUCCH2, the communication device CD applies the transmission configuration index state TCI4 indicated by the downlink control information DCI2 and/or switches the search space combination group.

FIG. 9 is a diagram of a scenario 90 for processing search space clusters and transmitting configuration index states according to an embodiment of the present invention. Fig. 9 can be applied to fig. 1 to 6. In fig. 9 there is a communication device CD and a network (not shown) with two transmission reception points TRP1 to TRP 2. The transmission reception point TRP1 comprises beams B1 and B3, and the transmission reception point TRP2 comprises beams B2 and B4. The transmission configuration index states TCI1 to TCI4 and the search space combination groups SSSG1 to SSSG2 are used to perform a single transmission reception point operation or a plurality of transmission reception point operations. The transmission configuration index states TCI 1-TCI 4 are associated with beams B1-B4, respectively. A search space combination group SSSG1 is associated with one of the transmission configuration index states TCI 1-TCI 4, and a search space combination group SSSG2 is associated with at least two of the transmission configuration index states TCI 1-TCI 4. The communication device CD moves from left to right according to a movement direction arrow a. The moving direction arrow a has position points P1 to P3. The communication device CD performs a plurality of transmission-reception point operations with the transmission-reception points TRP1 to TRP2 (e.g., the beam B1 of the transmission-reception point TRP1 and the beam B2 of the transmission-reception point TRP 2) between the position points P1 to P2, and performs a plurality of transmission-reception point operations with the transmission-reception points TRP1 to TRP2 (e.g., the beam B3 of the transmission-reception point TRP1 and the beam B4 of the transmission-reception point TRP 2) between the position points P2 to P3. In addition, there are times TI 1-TI 3 and a time period TP in a time dimension T.

In fig. 9, between the position points P1-P2 (e.g., before the time TI 3), the communication device CD performs a plurality of transmission-reception point operations according to the transmission configuration index states TCI 1-TCI 2 and the search-space-combination group SSSG2 (e.g., monitors the search-space-combination group SSSG2 according to the transmission configuration index states TCI 1-TCI 2) and the transmission-reception points TRP 1-TRP 2. At time TI1, communication apparatus CD receives downlink control information DCI1 from transmission reception point TRP1 and/or transmission reception point TRP2. At time TI2, the communication device CD transmits an physical uplink control channel PUCCH1 corresponding to a hybrid automatic repeat request feedback of the downlink control information DCI1 to the transmission receiving point TRP1 and/or the transmission receiving point TRP2.

In one embodiment, the downlink control information DCI1 includes a transmission configuration indicator Fu Lanwei (or a transmission configuration indicator indication) indicating a transmission configuration indicator code point of the transmission configuration indicator states TCI 3-TCI 4. At time TI3, the communication device CD does not change the search space combination group SSSG2 due to the transmission configuration indicator field indicating at least two of the transmission configuration index states TCI1 to TCI 4.

In one embodiment, the downlink control information DCI1 includes a transmission configuration indicator Fu Lanwei (or a transmission configuration indicator indication) indicating transmission configuration indicator code points of the transmission configuration indicator states TCI 3-TCI 4 and includes a search space set group switch field indicating the search space set group SSSG2. At time TI3, communication device CD does not change search space combination group SSSG2 due to the search space set group switching field of downlink control information DCI1 indicating search space combination group SSSG2.

Thus, between the position points P2-P3 (e.g., after time TI 3), the communication device CD performs a plurality of transmission-reception point operations with the transmission-reception points TRP 1-TRP 2 according to the transmission configuration index states TCI 3-TCI 4 and the search-space-combination group SSSG2 (e.g., the search-space-combination group SSSG2 is monitored according to the transmission configuration index states TCI 3-TCI 4). In addition, the time period TP between the timings TI2 to TI3 is a time for beam application. After a time period TP following a final symbol of the physical uplink control channel PUCCH1, the communication device CD applies the transmission configuration index states TCI3 to TCI4 indicated by the downlink control information DCI 1.

FIG. 10 is a diagram of a scenario 100 for processing search space clusters and transmitting configuration index states according to one embodiment of the present invention. Fig. 10 can be applied to fig. 1 to 9. In fig. 10 there is a communication device CD and a network (not shown) with two transmission reception points TRP1 to TRP 2. The transmission reception point TRP1 comprises beam B1 and the transmission reception point TRP2 comprises beam B2. The transmission configuration index states TCI1 to TCI2 and the search space combination groups SSSG1 to SSSG2 are used to perform a single transmission reception point operation or a plurality of transmission reception point operations. The transmission configuration index states TCI 1-TCI 2 are associated with beams B1-B2, respectively. One search space combination group SSSG1 is associated with one of the transmission configuration index states TCI 1-TCI 2, and one search space combination group SSSG2 is associated with the transmission configuration index states TCI 1-TCI 2. The communication device CD moves from left to right according to a movement direction arrow a. The moving direction arrow a has position points P1 to P4. A coverage area of beam B1 includes an area between location points P1 and P4, and a coverage area of beam B2 includes an area between location points P3 and P4. The communication device CD performs a single transmission-reception point operation with the transmission-reception point TRP1 (e.g., the beam B1 of the transmission-reception point TRP 1) between the positions P1 and P3, and performs a plurality of transmission-reception point operations with the transmission-reception points TRP1 to TRP2 (e.g., the beam B1 of the transmission-reception point TRP1 and the beam B2 of the transmission-reception point TRP 2) between the positions P3 to P4. In addition, time TI1 to TI6 and time periods TP1 to TP2 are included in a time dimension T.

In fig. 10, the communication device CD monitors a subgroup of the search space combination group SSSG1 according to the transmission configuration index state TCI1 between the position points P1 to P2 (e.g., before the time TI 3). The subgroup SG1 of the search space combination group SSSG1 is associated with a control resource combination CORESET1, and the control resource combination CORESET1 is associated with a transmission configuration index state TCI1. At time TI1, the communication device CD receives downlink control information DCI1 at a transmission reception point TRP 1. The downlink control information DCI1 includes a transmission configuration indicator Fu Lanwei (or a transmission configuration indicator) indicating a transmission configuration indicator code point of the transmission configuration indicator state TCI1 and includes a search space set group switch field indicating the search space combination group SSSG2. At time TI2, the communication device CD transmits an physical uplink control channel PUCCH1 with a hybrid automatic repeat request feedback corresponding to the downlink control information DCI1. At time TI3, the communication device CD switches to the search space combination group SSSG2 according to the search space combination group switching field indicating the search space combination group SSSG2. Specifically, the communication device CD monitors the subgroups SG2 to SG3 of the search space combination group SSSG2 between the position points P2 to P3 (for example, between the time points TI3 and TI 6) according to the transmission configuration index state TCI1. At least one search space combination in subgroup SG2 corresponds to at least one search space combination in subgroup SG3, respectively. The subgroups SG 2-SG 3 of the search space combination group SSSG2 are respectively associated with control resource combinations CORESET 2-CORESET 3, and the control resource combinations CORESET 2-CORESET 3 are associated with a transmission configuration index state TCI1.

In fig. 10, at time TI4, the communication device CD receives downlink control information DCI2 at the transmission reception point TRP 1. The downlink control information DCI2 includes a transmission configuration indicator Fu Lanwei (or a transmission configuration indicator indication) having a transmission configuration indicator code point indicating transmission configuration indicator states TCI 1-TCI 2 and includes a search space set group switch field indicating the search space set group SSSG2. At time TI5, the communication device CD transmits an physical uplink control channel PUCCH2 with a hybrid automatic repeat request feedback corresponding to the downlink control information DCI2. At time TI6, the communication device CD does not change the search space combination group SSSG2 due to the search space set group switch field indicating the search space combination group SSSG2. Specifically, the communication device CD monitors the subgroups SG2 to SG3 of the search space combination group SSSG2 according to the transmission configuration index states TCI1 to TCI2 between the position points P3 to P4 (for example, after the time TI 6). The subgroups SG 2-SG 3 of the search space combination group SSSG2 are respectively associated with the control resource combinations CORESET 2-CORESET 3, and the control resource combinations CORESET 2-CORESET 3 are respectively associated with the transmission configuration index states TCI 1-TCI 2. In addition, the time periods TP1 to TP2 in fig. 10 may refer to fig. 7 to 9, and are not described herein for brevity.

FIG. 11 is a diagram of a scenario 110 of processing search space clusters and transmission configuration index states according to an embodiment of the present invention. Fig. 11 can be applied to fig. 1 to 6. In fig. 11, a communication device CD, a network (not shown) having two transmission receiving points TRP1 to TRP2, beams B1 to B4, transmission configuration index states TCI1 to TCI4, search space combination groups SSSG1 to SSSG2, a moving direction arrow a, and position points P1 to P4 may refer to fig. 7, which are not described herein for brevity. In addition, there are time instants TI1 to TI3 and a time period TP1 in a time dimension T.

In fig. 11, between the position points P1-P2 (e.g., before the time TI 3), the communication device CD performs a single transmission-reception point operation with the transmission-reception point TRP1 according to the transmission configuration index state TCI1 and the search space combination group SSSG1 (e.g., the monitoring search space combination group SSSG1 according to the transmission configuration index state TCI 1). At time TI1, the communication device CD receives downlink control information DCI1 at a transmission reception point TRP 1. The downlink control information DCI1 includes a transmission configuration indicator Fu Lanwei (or a transmission configuration indicator indication) having a transmission configuration indicator code point indicating transmission configuration indicator states TCI 2-TCI 3 and includes a time period field indicating a time period TP1. At time TI2, the communication device CD transmits an physical uplink control channel PUCCH1 with a hybrid automatic repeat request feedback corresponding to the downlink control information DCI1. At time TI3, the communication device CD switches to the search space combination group SSSG2 according to the transmission configuration indication Fu Lanwei indicating at least two of the transmission configuration index states TCI1 to TCI 4. The time period TP1 starts at time TI2 and ends at time TI3, where the physical uplink control channel PUCCH1 is transmitted. Therefore, at time TI3, the communication device CD switches to the search space combination group SSSG2 according to time TI2 and time period TP1. Between the position points P2-P3 (e.g., after the time TI 3), the communication device CD performs a plurality of transmission/reception point operations according to the transmission configuration index states TCI 2-TCI 3 and the search space combination group SSSG2 (e.g., monitors the search space combination group SSSG2 according to the transmission configuration index states TCI 2-TCI 3) and the transmission/reception points TRP 1-TRP 2.

FIG. 12 is a diagram of a scenario 120 of processing search space clusters and transmission configuration index states according to an embodiment of the present invention. Fig. 12 can be applied to fig. 1 to 6 and fig. 11. In fig. 12, a communication device CD, a network (not shown) having two transmission receiving points TRP1 to TRP2, beams B1 to B4, transmission configuration index states TCI1 to TCI4, search space combination groups SSSG1 to SSSG2, a moving direction arrow a, and position points P1 to P4 are referred to in fig. 11, and are not described herein for brevity. In addition, time dimension T has time TI1-TI6 and time periods TP 1-TP 2.

In fig. 12, between the location points P1-P2 (e.g., before the time TI 6), the communication device CD performs a single transmission-reception point operation with the transmission-reception point TRP1 according to the transmission configuration index state TCI1 and the search-space combination group SSSG1 (e.g., the search-space combination group SSSG1 is monitored according to the transmission configuration index state TCI 1). At time TI1, the communication device CD receives downlink control information DCI1 at a transmission reception point TRP 1. The downlink control information DCI1 includes a transmission configuration indicator Fu Lanwei (or a transmission configuration indicator indication) having a transmission configuration indicator code point indicating transmission configuration indicator states TCI 2-TCI 3 and includes a time period field indicating a time period TP 1. At time TI2, the communication device CD transmits an physical uplink control channel PUCCH1 with a hybrid automatic repeat request feedback corresponding to the downlink control information DCI1. Accordingly, the communication device CD schedules a switch to the search space combination group SSSG2 according to the time TI2 and the time period TP1 at the time TI 5.

Next, the communication device CD receives a downlink control information DCI2 from the transmission reception point TRP1 at time TI3, for example, in response to a speed change of the communication device CD. The downlink control information DCI2 includes a transmission configuration indicator Fu Lanwei (or a transmission configuration indicator indication) having a transmission configuration indicator code point indicating transmission configuration indicator states TCI 2-TCI 3 and includes a time period indicating time period TP 2. At time TI4, the communication device CD transmits an physical uplink control channel PUCCH2 with a hybrid automatic repeat request feedback corresponding to the downlink control information DCI 2. Accordingly, the communication device CD switches to the search space combination group SSSG2 at time TI6 according to time TI4 and time period TP 2. Between the position points P2-P3 (e.g., after the time TI 6), the communication device CD performs a plurality of transmission/reception point operations according to the transmission configuration index states TCI 2-TCI 3 and the search space combination group SSSG2 (e.g., monitors the search space combination group SSSG2 according to the transmission configuration index states TCI 2-TCI 3) and the transmission/reception points TRP 1-TRP 2.

In fig. 12, the moment at which the search space cluster switch is performed is shifted from moment TI5 to moment TI6 (e.g., backward or forward), for example, in response to a change in the speed of the communication device CD.

FIG. 13 is a diagram of a scenario 130 of processing search space clusters and transmission configuration index states according to an embodiment of the present invention. Fig. 13 can be applied to fig. 1 to 6 and fig. 11. In fig. 13, a communication device CD, a network (not shown) having two transmission/reception points TRP1 to TRP2, beams B1 to B4, transmission configuration index states TCI1 to TCI4, search space combination groups SSSG1 to SSSG2, a moving direction arrow a, and position points P1 to P4 are shown in fig. 11, and are not described herein for brevity. In addition, time TI1 to TI3 and time periods TP1 to TP2 are included in a time dimension T.

In fig. 13, between the position points P1-P2 (e.g., before the time TI 3), the communication device CD performs a single transmission-reception point operation with the transmission-reception point TRP1 according to the transmission configuration index state TCI1 and the search-space combination group SSSG1 (e.g., the search-space combination group SSSG1 is monitored according to the transmission configuration index state TCI 1). At time TI1, the communication device CD receives downlink control information DCI1 at a transmission reception point TRP 1. The downlink control information DCI1 includes a transmission configuration indicator Fu Lanwei (or a transmission configuration indicator indication) having a transmission configuration indicator code point indicating transmission configuration indicator states TCI 2-TCI 3 and includes a time period field indicating a time period TP 1. The time period TP1 is a time period starting at time TI1 when the downlink control information DCI1 is received and ending at time TI 3.

At time TI2, the communication apparatus CD receives downlink control information DCI2 from the transmission/reception point TRP1. The downlink control information DCI2 includes a transmission configuration indicator Fu Lanwei (or a transmission configuration indicator indication) having a transmission configuration indicator code point indicating transmission configuration indicator states TCI 2-TCI 3 and includes a time period field indicating a time period TP 2. The time period TP2 starts at time TI2 when the downlink control information DCI2 is received and ends at time TI3. The time periods TP1 to TP2 end simultaneously. Accordingly, the communication device CD switches to the search space combination group SSSG2 at time TI3. Between the position points P2-P3 (e.g., after the time TI 3), the communication device CD performs a plurality of transmission/reception point operations according to the transmission configuration index states TCI 2-TCI 3 and the search space combination group SSSG2 (e.g., monitors the search space combination group SSSG2 according to the transmission configuration index states TCI 2-TCI 3) and the transmission/reception points TRP 1-TRP 2.

In fig. 13, the communication device CD does not need to transmit an physical uplink control channel with a harq feedback corresponding to a downlink control information. Thus, the network may transmit a plurality of downlink control information to the communication device CD to avoid that the communication device CD does not receive at least one downlink control information s.

FIG. 14 is a diagram of a scenario 140 of processing search space clusters and transmission configuration index states according to an embodiment of the present invention. Fig. 14 can be applied to fig. 1 to 6 and fig. 11. In fig. 14, a communication device CD, a network (not shown) having two transmission receiving points TRP1 to TRP2, beams B1 to B4, transmission configuration index states TCI1 to TCI4, search space combination groups SSSG1 to SSSG2, a moving direction arrow a, and position points P1 to P4 may refer to fig. 11, and are not described herein for brevity. In addition, time dimension T has time TI1-TI5 and time periods TP 1-TP 2.

In fig. 14, between the location points P1-P2 (e.g., before the time TI 5), the communication device CD performs a single transmission-reception point operation with the transmission-reception point TRP1 according to the transmission configuration index state TCI1 and the search-space combination group SSSG1 (e.g., the search-space combination group SSSG1 is monitored according to the transmission configuration index state TCI 1). The transmission reception point TRP1 transmits the downlink control information DCI1 to the communication device CD. The downlink control information DCI1 includes a transmission configuration indicator Fu Lanwei (or a transmission configuration indicator indication) having a transmission configuration indicator code point indicating transmission configuration indicator states TCI 2-TCI 3 and includes a time period indicating time period TP 1. However, the communication device CD cannot receive the downlink control information DCI1 at the time TI1, so the communication device CD does not transmit an physical uplink control channel PUCCH1 with a hybrid automatic repeat request feedback corresponding to the downlink control information DCI1 to the transmission receiving point TRP1 at the time TI 2.

Next, the transmission reception point TRP1 transmits the downlink control information DCI2 to the communication apparatus CD. The downlink control information DCI2 includes a transmission configuration indicator Fu Lanwei (or a transmission configuration indicator indication) having a transmission configuration indicator code point indicating transmission configuration indicator states TCI 2-TCI 3 and includes a time period field indicating a time period TP2. The communication device CD successfully receives the downlink control information DCI2 at time TI3 and transmits an physical uplink control channel PUCCH2 with a hybrid automatic repeat request feedback corresponding to the downlink control information DCI2 to the transmission receiving point TRP1 at time TI 4. Therefore, at time TI5, the communication device CD switches to the search space combination group SSSG2 according to time TI4 and time period TP2. Between the position points P2-P3 (e.g., after the time TI 5), the communication device CD performs a plurality of transmission/reception point operations according to the transmission configuration index states TCI 2-TCI 3 and the search space combination group SSSG2 (e.g., monitors the search space combination group SSSG2 according to the transmission configuration index states TCI 2-TCI 3) and the transmission/reception points TRP 1-TRP 2.

FIG. 15 is a diagram of a scenario 150 of processing search space clusters and transmission configuration index states according to an embodiment of the present invention. Fig. 15 can be applied to fig. 1 to 6 and fig. 11. In fig. 15, a communication device CD, a network (not shown) having two transmission receiving points TRP1 to TRP2, beams B1 to B4, transmission configuration index states TCI1 to TCI4, search space combination groups SSSG1 to SSSG2, a moving direction arrow a, and position points P1 to P4 are shown with reference to fig. 11, and are not described herein for brevity. In addition, time dimension T has time TI1-TI5 and time periods TP 1-TP 2.

In fig. 15, the transmission reception point TRP1 transmits downlink control information s DCI1-DCI2 to the communication device CD. The downlink control information DCI1 includes a transmission configuration indicator Fu Lanwei (or a transmission configuration indicator indication) having a transmission configuration indicator code point indicating transmission configuration indicator states TCI 2-TCI 3 and includes a time period field indicating a time period TP 1. The downlink control information DCI2 includes a transmission configuration indicator Fu Lanwei (or a transmission configuration indicator indication) having a transmission configuration indicator code point indicating transmission configuration indicator states TCI 2-TCI 3 and includes a time period field indicating a time period TP 2. The communication device fails to receive the downlink control information DCI1 at time TI1 and successfully receives the downlink control information DCI1 at time TI 2. The communication device does not transmit an physical uplink control channel PUCCH1 with a harq feedback corresponding to downlink control information DCI1 at time TI3 and transmits an physical uplink control channel PUCCH2 with a harq feedback corresponding to downlink control information DCI2 at time TI 4. Therefore, at time TI5, the communication device CD switches to the search space combination group SSSG2 according to time TI4 and time period TP 2. Between the position points P2-P3 (e.g., after the time TI 5), the communication device CD performs a plurality of transmission/reception point operations according to the transmission configuration index states TCI 2-TCI 3 and the search space combination group SSSG2 (e.g., monitors the search space combination group SSSG2 according to the transmission configuration index states TCI 2-TCI 3) and the transmission/reception points TRP 1-TRP 2.

FIG. 16 is a diagram illustrating a scenario 160 of processing search space clusters and transmission configuration index states according to an embodiment of the present invention. Fig. 16 can be applied to fig. 1 to 6. In fig. 16, a communication device CD, a network (not shown) having two transmission receiving points TRP1 to TRP2, beams B1 to B4, transmission configuration index states TCI1 to TCI4, search space combination groups SSSG1 to SSSG2, a moving direction arrow a, and position points P1 to P4 may refer to fig. 7, which are not described herein for brevity. In addition, time TI1 to TI5 and time periods TP1 to TP3 are included in a time dimension T.

In fig. 16, between the position points P1-P2 (e.g., before the time TI 2), the communication device CD performs a single transmission-reception point operation with the transmission-reception point TRP1 according to the transmission configuration index state TCI1 and the search-space combination group SSSG1 (e.g., monitors the search-space combination group SSSG1 according to the transmission configuration index state TCI 1). At time TI1, the communication device CD receives downlink control information DCI1 at a transmission reception point TRP 1. The downlink control information DCI1 includes a time period field indicating a time period TP 1. The time period TP1 starts at time TI1 when the downlink control information DCI1 is received and ends at time TI2. Therefore, at time TI2, the communication device CD switches to the search space combination group SSSG2 and performs a plurality of transmission reception point operations with the transmission reception points TRP1 to TRP2 (for example, monitors the search space combination group SSSG2 according to the transmission configuration index states TCI2 to TCI 3).

Further, the communication apparatus CD receives downlink control information DCI2 from the transmission reception point TRP1 at time TI3 and receives downlink control information DCI3 from the transmission reception point TRP1 at time TI 4. The downlink control information DCI2 includes a time period field indicating a time period TP2, and the downlink control information DCI3 includes a time period field indicating a time period TP 3. The time period TP2 starts at time TI3 when the downlink control information DCI2 is received and ends at time TI5. The time period TP3 starts at time TI4 when the downlink control information DCI2 is received and ends at time TI5. Accordingly, at time TI5, the communication device CD switches to the search space combination group SSSG1 and performs a single transmission-reception point operation with the transmission-reception point TRP2 (e.g., monitors the search space combination group SSSG1 according to the transmission configuration index state TCI 4).

Between the position points P2-P3 (e.g. between the time instants TI2 and TI 5), the communication device CD and the transmission receiving points TRP 1-TRP 2 perform a plurality of transmission receiving point operations, for example, according to the transmission configuration index states TCI 2-TCI 3 and the search space combination group SSSG2 (e.g. according to the transmission configuration index states TCI 2-TCI 3, the search space combination group SSSG2 is monitored). Between the position points P3-P4 (e.g., after time TI 5), the communication device CD performs a single transmission-reception point operation with the transmission-reception point TRP2, e.g., according to the transmission configuration index state TCI4 and the search space combination group SSSG1 (e.g., according to the transmission configuration index state TCI4, the search space combination group SSSG1 is monitored). In fig. 16, the DCI includes a field indicating a period for a search space group switch, but does not include a transmission configuration indicator Fu Lanwei indicating at least one transmission configuration indicator state and/or a search space group switch field indicating a search space group.

FIG. 17 is a diagram of a scenario 170 of processing search space clusters and transmission configuration index states according to an embodiment of the present invention. Fig. 17 can be applied to fig. 1 to 6. In fig. 17, a communication device CD, a network (not shown) having two transmission receiving points TRP1 to TRP2, beams B1 to B4, transmission configuration index states TCI1 to TCI4, search space combination groups SSSG1 to SSSG2, a moving direction arrow a, and position points P1 to P4 may refer to fig. 7, and are not described herein for brevity. In addition, there are times TI 1-TI 3 in a time dimension T and a time period TP1 and a position point P3' in the movement direction arrow A. The communication device is configured with a timer.

In fig. 17, between the position points P2 and P3' (e.g., before the time TI 2), the communication device CD performs a plurality of transmission-reception point operations with the transmission-reception points TRP1 to TRP2 according to the transmission configuration index states TCI2 to TCI3 and the search-space combination group SSSG2 (e.g., the search-space combination group SSSG2 is monitored according to the transmission configuration index states TCI2 to TCI 3). At time TI1, the communication device CD receives downlink control information DCI1 from the transmission reception point TRP1 and/or the transmission reception point TRP2, and starts a timer. The downlink control information DCI1 includes a time period field indicating a time period TP 1. The time period TP1 starts at time TI1 when the downlink control information DCI1 is received and ends at time TI3. At time TI2, the timer expires, and the communication device CD switches to the search space combination group SSSG1 according to the expired timer. Between the position points P3' and P3 (e.g., between the time instants TI 2-TI 3), the communication device CD performs a single transmission/reception point operation with the transmission/reception point TRP1 or TRP2 according to one of the transmission configuration index states TCI 2-TCI 3 and a predetermined search space combination group (e.g., the search space combination group SSSG1 is monitored according to the transmission configuration index state TCI 2). At time TI3, the communication device CD does not change the search space combination group SSSG1, and performs a single transmission-reception point operation according to the transmission configuration index state TCI4 and the search space combination group SSSG1 (e.g., monitoring the search space combination group SSSG1 according to the transmission configuration index state TCI 4) and the transmission-reception point TRP 2. Between the position points P3-P4 (e.g., after the time TI 3), the communication device CD performs a single transmission-reception point operation with the transmission-reception point TRP2 according to the transmission configuration index state TCI4 and the search-space combination group SSSG1 (e.g., monitoring the search-space combination group SSSG1 according to the transmission configuration index state TCI 4).

In fig. 17, the time at which the search space cluster switch is performed may be advanced from time TI3 to time TI2 in response to an expired timer.

FIG. 18 is a diagram of a scenario 180 of processing search space clusters and transmitting configuration index states according to one embodiment of the present invention. Fig. 18 can be applied to fig. 1 to 6. In fig. 18, a communication device CD, a network (not shown) having two transmission receiving points TRP1 to TRP2, beams B1 to B4, transmission configuration index states TCI1 to TCI4, search space combination groups SSSG1 to SSSG2, a moving direction arrow a, and position points P1 to P4 may refer to fig. 7, which are not described herein for brevity. In addition, time TI1 to TI4 and time periods TP1 to TP2 are included in a time dimension T.

In fig. 18, between the position points P1-P2 (e.g., before the time TI 3), the communication device CD may perform a single transmission/reception point operation with the transmission/reception point TRP1 according to the transmission configuration index state TCI1 and the search space combination group SSSG1 (e.g., the search space combination group SSSG1 may be monitored according to the transmission configuration index state TCI 1). At time TI1, the communication device CD receives downlink control information DCI1 at a transmission reception point TRP1. At time TI2, the communication device CD transmits an physical uplink control channel PUCCH1 with a hybrid automatic repeat request feedback corresponding to the downlink control information DCI1 to the transmission receiving point TRP1. The downlink control information DCI1 includes a transmission configuration indicator Fu Lanwei (or a transmission configuration indicator indication) having a transmission configuration indicator code point indicating transmission configuration indicator states TCI 2-TCI 3 and includes a search space set group switch field indicating a time period TP 1. The time period TP1 starts at time TI1 when the downlink control information DCI1 is received and ends at time TI4. The time period TP2 between instants TI2 to TI3 is the time for beam application. After a time period TP2 following a final symbol of the physical uplink control channel PUCCH1, the communication device CD is applied in one of the transmission configuration index states TCI2 to TCI3 indicated by the downlink control information DCI1 (e.g. the transmission configuration index state TCI 2).

Therefore, between the position points P1-P2 (e.g., between the time instants TI3-TI 4), the communication device CD may perform a single transmission/reception point operation with the transmission/reception point TRP1 according to the transmission configuration index state TCI2 and the search space combination group SSSG1 (e.g., the search space combination group SSSG1 may be monitored according to the transmission configuration index state TCI 2). At time TI4, communication device CD switches to search space combination group SSSG2 according to time TI1 and time period TP 1. Between the position points P2-P3 (e.g., after the time TI 4), the communication device CD performs a plurality of transmission/reception point operations according to the transmission configuration index states TCI 2-TCI 3 and the search space combination group SSSG2 (e.g., monitors the search space combination group SSSG2 according to the transmission configuration index states TCI 2-TCI 3) and the transmission/reception points TRP 1-TRP 2.

FIG. 19 is a diagram of a scenario 190 of processing search space clusters and transmission configuration index states according to an embodiment of the present invention. Fig. 19 can be applied to fig. 1 to 6. In fig. 19, a communication device CD, a network (not shown) having two transmission receiving points TRP1 to TRP2, beams B1 to B4, transmission configuration index states TCI1 to TCI4, search space combination groups SSSG1 to SSSG2, a moving direction arrow a, and position points P1 to P4 may refer to fig. 7, and are not described herein for brevity. In addition, there are time instants TI1-TI6 and time periods TP1-TP3 in a time dimension T.

In fig. 19, between the position points P1-P2 (e.g., before the time TI 3), the communication device CD may perform a single transmission/reception point operation with the transmission/reception point TRP1 according to the transmission configuration index state TCI1 and the search space combination group SSSG1 (e.g., the search space combination group SSSG1 may be monitored according to the transmission configuration index state TCI 1). At time TI1, the communication device CD receives downlink control information DCI1 at a transmission reception point TRP1. At time TI2, the communication device CD transmits an physical uplink control channel PUCCH1 with a hybrid automatic repeat request feedback corresponding to the downlink control information DCI1 to the transmission receiving point TRP1. The downlink control information DCI1 includes a transmission configuration indicator Fu Lanwei (or a transmission configuration indicator) having a transmission configuration indicator code point indicating a transmission configuration indicator state TCI2 and includes a search space set group switch field indicating a time period TP 1. The time period TP1 starts at time TI1 when the downlink control information DCI1 is received and ends at time TI6. The time period TP2 between instants TI 2-TI 3 is the time for beam application. After a time period TP2 following a final symbol of the physical uplink control channel PUCCH1, the communication device CD applies the transmission configuration index state TCI2 indicated by the downlink control information DCI1. Thus, between the position points P1-P2 (e.g., before the time instants TI 3-TI 6), the communication device CD may perform a single transmission-reception point operation with the transmission-reception point TRP1 according to the transmission configuration index state TCI2 and the search-space combination group SSSG1 (e.g., the search-space combination group SSSG1 may be monitored according to the transmission configuration index state TCI 2).

At time TI4, the communication device CD receives downlink control information DCI2 from the transmission reception point TRP1. At time TI5, the communication device CD transmits an physical uplink control channel PUCCH2 with a hybrid automatic repeat request feedback corresponding to the downlink control information DCI2 to the transmission receiving point TRP1. The downlink control information DCI2 includes a transmission configuration indicator Fu Lanwei (or a transmission configuration indicator indication) having a transmission configuration indicator code point indicating transmission configuration indicator states TCI 2-TCI 3 and includes a time period field indicating a time period TP 3. The time period TP3 starts at time TI4 when the downlink control information DCI2 is received and ends at time TI6. At time TI6, communication device CD switches to search space combination group SSSG2 according to time TI4 and time period TP 3. Between the position points P2-P3 (e.g., after the time TI 6), the communication device CD performs a plurality of transmission/reception point operations according to the transmission configuration index states TCI 2-TCI 3 and the search space combination group SSSG2 (e.g., the search space combination group SSSG2 may be monitored according to the transmission configuration index states TCI 2-TCI 3) and the transmission/reception points TRP 1-TRP 2.

Fig. 20 is a diagram illustrating a transmission configuration indicator code point of a transmission configuration indicator Fu Lanwei in downlink control information according to an embodiment of the present invention. Fig. 20 can be applied to fig. 1 to 6. A table 204 is determined by a MAC control unit, the table 204 including C _i 、R、D _i And a transmission configuration index state (e.g., transmission configuration index state ID _i,j ) Where i and j are positive integers. i is an index of a transmission configuration indicator code point of a transmission configuration indicator field in DCI, and j is an index of a transmission configuration index state. Transmitting configuration index state ID _i,j Indicating that the jth transmission configuration index state is indicated as the ith transmission configuration indicator code point. In Table 204, C _i Indicating that a transmission configuration indicator code point in a transmission configuration indicator field indicates a transmission configuration indicator state or a plurality of transmission configuration indicator states (e.g., a transmission configuration indicator state ID _i,2 Whether or not present). C (C) _i Is "0" (e.g., C ₀ And C ₁ ) A transmission configuration indicator code point in a transmission configuration indicator field indicates a transmission configuration indicator status (e.g., transmission configuration indicator status ID _i,2 Absent), and C _i Is "1" (e.g., C ₂ And C ₃ ) Indicating that the transmission configuration indicator code point indicates a plurality of transmission configuration index states (e.g., transmission configuration index state IDs _i,2 Presence). D (D) _i Representing a predetermined transmission configuration index state for monitoring a predetermined search space combination group. D (D) _i Is "0" (e.g., D ₂ ) Representing transmission configuration index status ID _i,1 Configuring index states for preset transmissions and D _i Is "1" (e.g., D ₃ ) Representing transmission configuration index status ID _i,2 And configuring index states for the preset transmission. If C _i Set to "0", then there will be R instead of D _i . R is a reserved bit and is set to "0".

In fig. 20, a table 202 is determined by a network according to table 204 and includes the transmission configuration indicator code points of the transmission configuration indicator Fu Lanwei in the DCI. Each transmission configuration indicator code point indicates at least one transmission configuration index state (e.g., transmission configuration index state ID _i,j ). A code point of "0" indicates a transmission configuration index status ID _0,1 Transmitting configuration index state ID _0,1 According to C in Table 204 ₀ R and Transmission configuration index State ID _0,1 And (5) determining. A code point of "1" indicates a transmission configuration index status ID _1,1 Transmitting configuration index state ID _1,1 According to C in Table 204 ₁ R and Transmission configuration index State ID _1,1 And (5) determining. A code point of "2" indicates a transmission configuration index status ID _2,1 And transmitting configuration index state ID _2,2 Transmitting the configuration index status ID _2,1 Is a preset transmission configuration index state according to C in table 204 ₂ 、D ₂ Transmitting configuration index state ID _2,1 And transmitting configuration index state ID _2,2 And (5) determining. A code point of "3" indicates a transmission configuration index status ID _3,1 And transmitting configuration index state ID _3,2 Transmitting the configuration index status ID _3,2 For the preset transmission configuration index state, the preset transmission configuration index state is according to C in the table 204 ₃ 、D ₃ Transmitting configuration index state ID _3,1 And transmitting configuration index state ID _3,2 And (5) determining.

Fig. 21 is a diagram illustrating a transmission configuration indicator code point of a transmission configuration indicator Fu Lanwei in downlink control information according to an embodiment of the present invention. Fig. 21 can be applied to fig. 1 to 6. A table 212 is determined by a network and includes transmission configuration indicator code points for transmission configuration indicator Fu Lanwei in DCI. Each code point indicates at least one transmission configuration index state (e.g., transmission configuration index state ID _i,j ). i and j are positive integers. I is an index of a transmission configuration indicator code point and j is an index of a transmission configuration index state. Transmitting configuration index state ID _i,j Indicating that the j-th transmission configuration index status indicates the i-th transmission configuration indexThe indicator represents the code point. A code point of "0" indicates a transmission configuration index status ID _0,1 . A code point of "1" indicates a transmission configuration index status ID _1,1 . A code point of "2" indicates a transmission configuration index status ID _2,1 And transmitting configuration index state ID _2,2 And transmitting configuration index state ID _2,1 . A code point of "3" indicates a transmission configuration index status ID _3,1 And transmitting configuration index state ID _3,2 . In table 212, if the configuration index state ID is transmitted _i,2 Presence, transmission configuration index status ID _i,2 Determining a predetermined transmission configuration index state. Thus, the configuration index state ID is transmitted _2,2 And transmitting configuration index state ID _3,2 And configuring index states for the preset transmission.

FIG. 22 is a diagram of a scenario 220 of processing search space clusters and transmission configuration index states according to an embodiment of the present invention. Fig. 22 can be applied to fig. 1 to 6. In fig. 22, a communication device CD, a network (not shown) having two transmission receiving points TRP1 to TRP2, beams B1 to B4, transmission configuration index states TCI1 to TCI4, search space combination groups SSSG1 to SSSG2, a moving direction arrow a, and position points P1 to P4 may refer to fig. 7, which are not described herein for brevity. In addition, there are time instants TI1 to TI3 and a time period TP1 in a time dimension T. The transmission receiving point TRP1 is associated with a control resource combination pool index CPI1 and the transmission receiving point TRP2 is associated with a control resource combination pool index CPI2.

In fig. 22, between the position points P1-P2 (e.g., before the time TI 3), the communication device CD performs a single transmission-reception point operation with the transmission-reception point TRP1 according to the transmission configuration index state TCI1 and the search-space combination group SSSG1 (e.g., the search-space combination group SSSG1 is monitored according to the transmission configuration index state TCI 1). That is, a search space combination group monitor of the search space combination group SSSG1 associated with the control resource combination pool index CPI1 is enabled and a search space combination group monitor of the search space combination group SSSG1 associated with the control resource combination pool index CPI2 is disabled. At time TI1, the communication device CD receives downlink control information DCI1 at a transmission reception point TRP1. At time TI2, the communication device CD transmits an physical uplink control channel PUCCH1 with a hybrid automatic repeat request feedback corresponding to the downlink control information DCI1 to the transmission receiving point TRP1. The downlink control information DCI1 includes a transmission configuration indicator Fu Lanwei (or a transmission configuration indicator indication) having a transmission configuration indicator code point indicating transmission configuration indicator states TCI 2-TCI 3 and includes a search space combination group monitoring field indicating that search space combination group monitoring associated with the control resource combination pool index CPI2 is enabled. At time TI3, the communication device CD switches to the search space combination group SSSG2 according to the transmission configuration indication Fu Lanwei indicating at least two of the transmission configuration index states TCI1 to TCI 4.

Thus, between the position points P2-P3 (e.g., after time TI 3), the communication device CD performs a plurality of transmission-reception point operations with the transmission-reception points TRP 1-TRP 2 according to the transmission configuration index states TCI 2-TCI 3 and the search-space-combination group SSSG2 (e.g., the search-space-combination group SSSG2 is monitored according to the transmission configuration index states TCI 2-TCI 3). In addition, the time period TP1 between the timings TI2 to TI3 is a time for beam application. After the time period TP1 and/or after enabling a search space combination group monitoring by a final symbol of the physical uplink control channel PUCCH1, the communication device CD applies the transmission configuration index states TCI 2-TCI 3 indicated by the downlink control information DCI1 and/or performs search space combination group monitoring associated with the control resource combination pool indices CPI1-CPI 2.

FIG. 23 is a diagram of a scenario 230 of processing search space clusters and transmission configuration index states according to an embodiment of the present invention. Fig. 23 can be applied to fig. 1 to 6 and fig. 21. In fig. 23, a communication device CD, a network (not shown) having two transmission receiving points TRP1 to TRP2, beams B1 to B4, transmission configuration index states TCI1 to TCI4, search space combination groups SSSG1 to SSSG2, a moving direction arrow a and position points P1 to P4, COREST Chi Suoyin CPI1-CPI2 may refer to fig. 22, and are not described herein for brevity. In addition, there are time instants TI4 to TI6 and a time period TP2 in a time dimension T.

In fig. 23, between the position points P2 to P3 (e.g., before the time TI 6), the communication device CD performs a plurality of transmission/reception point operations according to the transmission configuration index states TCI2 to TCI3 and the search space combination group SSSG2 (e.g., monitors the search space combination group SSSG2 according to the transmission configuration index states TCI2 to TCI 3) and the transmission/reception points TRP1 to TRP2. That is, a search space combination group monitor of the search space combination group SSSG2 associated with the control resource combination pool index CPI1-CPI2 is enabled. At time TI4, communication apparatus CD receives downlink control information DCI2 from transmission reception point TRP1 and/or transmission reception point TRP2. At time TI5, the communication device CD transmits an physical uplink control channel PUCCH2 with a hybrid automatic repeat request feedback corresponding to the downlink control information DCI2 to the transmission reception point TRP1 and/or the transmission reception point TRP2. The downlink control information DCI2 includes a transmission configuration indication Fu Lanwei (or a transmission configuration indicator indication) having a transmission configuration indicator code point indicating a transmission configuration indicator state TCI4 and includes a search space combination group monitoring field indicating that search space combination group monitoring associated with the control resource combination pool index CPI1 is disabled. At time TI6, the communication device CD switches to the search space combination group SSSG1 according to the transmission configuration indication Fu Lanwei indicating one of the transmission configuration index states TCI1 to TCI 4.

Thus, between the position points P3-P4 (e.g., after time TI 6), the communication device CD performs a single transmission-reception point operation with the transmission-reception point TRP2 according to the transmission configuration index state TCI4 and the search-space combination group SSSG1 (e.g., the search-space combination group SSSG1 is monitored according to the transmission configuration index state TCI 4). Furthermore, the time period TP2 between instants TI5-TI6 is a time for beam applications. After time period TP2 and/or after deactivation of a search space combination group monitor by a final symbol of physical uplink control channel PUCCH2, communication device CD does not perform search space combination group monitor associated with control resource combination pool index CPI 1.

FIG. 24 is a diagram of a scenario 240 of processing search space clusters and transmission configuration index states according to an embodiment of the present invention. Fig. 24 can be applied to fig. 1 to 6 and fig. 22 to 23. In fig. 24, a communication device CD, a network (not shown) having two transmission receiving points TRP1 to TRP2, beams B1 to B4, transmission configuration index states TCI1 to TCI4, search space combination groups SSSG1 to SSSG2, a moving direction arrow a, position points P1 to P4, and COREST Chi Suoyin CPI1 to CPI2 may refer to fig. 22, and are not described herein for brevity. In addition, there are time instants TI7 to TI9 and a time period TP3 in a time dimension T.

In fig. 24, between the position points P2 to P3 (e.g., before time TI 9), the communication device CD performs a plurality of transmission-reception point operations according to the transmission configuration index state TCI2 (not shown), the transmission configuration index state TCI3, and the search space combination group SSSG2 (e.g., the search space combination group SSSG2 is monitored according to the transmission configuration index states TCI2 to TCI 3) and the transmission-reception points TRP1 to TRP 2. That is, a search space combination group monitor of the search space combination group SSSG2 associated with the control resource combination pool indices CPI 1-CPI 2 is enabled. At time TI7, the communication device CD receives downlink control information DCI3 from the transmission reception point TRP 2. The downlink control information DCI3 includes a transmission configuration indicator Fu Lanwei (or a transmission configuration indicator indication) having a transmission configuration indicator code point indicating the transmission configuration indicator state TCI 4. The downlink control information DCI3 contains information for transmitting the reception point TRP2 but does not contain information for transmitting the reception point TRP 1. At time TI8, the communication device CD transmits an physical uplink control channel PUCCH3 with a hybrid automatic repeat request feedback corresponding to the downlink control information DCI3. At time TI9, the communication device CD switches to the search space combination group SSSG1 according to the transmission configuration indication Fu Lanwei indicating one of the states TCI1 to TCI 4.

Thus, between the position points P3-P4 (e.g., after time TI 9), the communication device CD performs a single transmission-reception point operation with the transmission-reception point TRP2 according to the transmission configuration index state TCI4 and the search-space combination group SSSG1 (e.g., the search-space combination group SSSG1 is monitored according to the transmission configuration index state TCI 4). In addition, the time period TP3 between the timings TI8 to TI9 is a time for beam application. After a time period TP3 following a final symbol of the physical uplink control channel PUCCH2, the communication device CD applies transmission configuration index state TCI4 group monitoring in the search space associated with the control resource combination pool index CPI 2.

The "decision" described in the above operation may be replaced with "judge", "calculate", "get", "generate", "output", "use", "select", "decide" or "configure to" operation, etc. The "detection" described in the above operation may be replaced with an operation such as "monitor", "receive", "sense" or "get". The "in response to" in the above operation may be replaced with "in response to". As used in the above description, "associated with" may be replaced with "of" or "corresponding to". The "pass (via)" described in the above operations may be replaced with "over … (on)", "in … (in)", or "in … (at)". The "when (w hen)" described in the above operations may be replaced with "above (upon)" at …, "after (after) …" and "in response to". The "cell" described in the above operation may be replaced with a "service carrier (serving cell)".

Those skilled in the art will recognize that the embodiments described above may be combined, modified or varied in light of the teachings of the present invention, and are not limited thereto. The foregoing statements, steps, and/or flows (including the suggested steps) may be implemented by means of modules, which may be hardware, software, firmware (which is a combination of hardware means and computer instructions and data, which may be read-only software on hardware means), electronic systems, or a combination of the above. An example of such a device may be communication device 20.

The hardware may be analog circuitry, digital circuitry, and/or hybrid circuitry. For example, the hardware may be an application specific integrated circuit, a field programmable gate array (Field Programmable Gate Array, FPGA), a programmable logic element (programmable logic device), a coupled hardware element, or a combination thereof. In other embodiments, the hardware may be a general-purpose processor (general-purpose processor), a microprocessor, a controller, a digital signal processor (digital signal processor, a DSP), or a combination of the above.

The software may be a combination of program code, a combination of instructions and/or a combination of functions stored in a memory unit, such as a computer-readable medium. For example, the computer readable medium can be a subscriber identity module, a read-only memory, a flash memory, a random access memory, a compact disc read-only memory (CD-ROM/DVD-ROM/BD-ROM), a magnetic tape, a hard disk, an optical data storage device, a non-volatile memory unit (non-volatile storage unit), or a combination thereof. The computer readable medium (e.g., a memory unit) may be coupled to at least one processor (e.g., a processor integrated with the computer readable medium) in a built-in manner or coupled to at least one processor (e.g., a processor separate from the computer readable medium) in an external connection. The at least one processor may include one or more modules to execute software stored on a computer readable medium. Combinations of program code, combinations of instructions and/or functions (functions) may cause at least one processor, one or more modules, hardware and/or electronic system to perform the associated steps.

The electronic system may be a system on chip (SoC), a system in package (system in package, siP), an embedded computer (computer on module, coM), a computer program product, a device, a mobile phone, a notebook, a tablet, an electronic book, a portable computer system, and the communication device 20.

In summary, embodiments of the present invention provide a communication device and method for processing search space clusters and transmitting configuration index states. The communication device receives downlink control information from the network, wherein the downlink control information includes at least one field indicating one or more transmission configuration index states, a search space combination group, and/or a time period. The downlink control information is used to process search space set group switching/monitoring and transmission configuration index states and to achieve dynamic switching between a single transmission reception point and multiple transmission reception points. Thus, the problem of how to handle search space combination groups and transmission configuration index states can be solved.

The foregoing description is only of the preferred embodiments of the invention, and all changes and modifications that come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Claims

1. A communication device for monitoring and switching search space combinations, comprising:

At least one storage device; and

at least one processing circuit coupled to the at least one memory device, wherein the at least one memory device stores instructions, and the at least one processing circuit is configured to execute the instructions, the instructions comprising:

receiving, by a network, a configuration of a first search space combination group and a second search space combination group, wherein the first search space combination group is associated with a transmission configuration indicator state and the second search space combination group is associated with a plurality of transmission configuration indicator states;

monitoring one of the first search space combination group and the second search space combination group according to the configuration;

receiving, by the network, a first downlink control information for a search space combination group handoff when monitoring the one of the first search space combination group or the second search space combination group according to the configuration; and

and executing the search space combination group switching according to the first downlink control information.

2. The communication device of claim 1, wherein the first downlink control information includes a field, and the instruction to perform the search space group switch according to the first downlink control information includes:

When the field indicates the transmission configuration indicator state, switching to the first search space combination group, and monitoring the first search space combination group according to the transmission configuration indicator state; and

and switching to the second search space combination group when the field indicates the states of the plurality of transmission configuration indicators, and monitoring the second search space combination group according to the states of the plurality of transmission configuration indicators.

3. The communication device of claim 1, wherein the first downlink control information includes a first field and a second field, and the instruction for performing the search space group switch according to the first downlink control information includes:

when the first column indicates the transmission configuration indicator state and the second column indicates the first search space combination group, switching to the first search space combination group, and monitoring the first search space combination group according to the transmission configuration indicator state; and

when the first field indicates the plurality of transmission configuration indicator states and the second field indicates the second search space combination group, switching to the second search space combination group, and monitoring the second search space combination group according to the plurality of transmission configuration indicator states.

4. The communication device of claim 1, wherein the first downlink control information includes a first field and a second field indicating a time period, and the instruction to perform the search space group switch according to the first downlink control information includes:

switching to the first search space combination group at the end of the time period when the first column indicates the transmission configuration indicator state, and monitoring the first search space combination group according to the transmission configuration indicator state; and

when the first column indicates the status of the plurality of transmission configuration indicators, switching to the second search space combination group at the end of the time period, and monitoring the second search space combination group according to the status of the plurality of transmission configuration indicators.

5. The communication device of claim 4 wherein the time period is between a first time when the first downlink control information is received by the network and a second time when the search space combination group switch is performed.

6. The communication device of claim 4 wherein the time period is between a first time instant when a hybrid automatic repeat request feedback corresponding to the first downlink control information is transmitted and a second time instant when the search space combination group switch is performed.

7. The communication device of claim 1, wherein the first downlink control information comprises a field indicating a period of time, and the instruction to perform the search space combination group switch according to the first downlink control information comprises:

switching to the first search space combination group at the end of the time period when the second search space combination group is monitored, and monitoring the first search space combination group according to the transmission configuration indicator state; and

and switching to the second search space combination group when the first search space combination group is monitored and the second search space combination group is monitored according to the plurality of transmission configuration indicator states.

8. The communication device of claim 1, wherein the instruction to perform the search space combination group switch according to the first downlink control information comprises:

starting a timer when the network receives the first downlink control information and monitors the second search space combination group associated with the plurality of transmission configuration indicator states; and

when the timer expires, switching to a predetermined search space combination group and monitoring the predetermined search space combination group according to a transmission configuration indicator state of the plurality of transmission configuration indicator states.

9. The communication device of claim 1, wherein the first downlink control information includes a first field indicating the status of the plurality of transmission configuration indicators and a second field indicating a time period, and the instruction to perform the search space combination group switch according to the first downlink control information includes:

monitoring the first search space combination group according to a transmission configuration indicator state in the plurality of transmission configuration indicator states; and

switching to the second search space combination group at the end of the time period and monitoring the second search space combination group according to the plurality of transmission configuration indicator states.

10. The communication device of claim 9, wherein the one of the plurality of transmission configuration indicator states is predetermined or indicated by a medium access control unit.

11. The communication device of claim 1, wherein the first downlink control information includes a first field indicating the one of the plurality of transmission configuration indicator states and a second field indicating a first time period, and the instruction to perform the search space combination group switch according to the first downlink control information includes:

Monitoring the first search space combination group according to the one of the plurality of transmission configuration indicator states;

receiving a second downlink control message, wherein the second downlink control message includes a third field indicating the status of the plurality of transmission configuration indicators and a fourth field indicating a second time period; and

and switching to the second search space combination group at the end of the second time period, and monitoring the second search space combination group according to the plurality of transmission configuration indicator states.

12. The communication device of claim 11, wherein the end of the first time period and the end of the second time period are at a same time.

13. The communication device of claim 1, wherein the first downlink control information includes a first field and a second field, and the instruction for performing the search space group switch according to the first downlink control information includes:

switching to the first search space combination group when the first field indicates the transmission configuration indicator state and the second field indicates a first search space combination group monitoring inactivity associated with a first value of a control resource combination pool index, and monitoring the first search space combination group according to the transmission configuration indicator state; and

When the first field indicates the status of the plurality of transmission configuration indicators and the second field indicates that a second search space combination group monitoring associated with a second value of the control resource combination pool index is enabled, switching to the second search space combination group and monitoring the second search space combination group according to the status of the plurality of transmission configuration indicators.

14. The communications apparatus of claim 13, wherein the first downlink control information is associated with one of a first control resource combination pool index and a second control resource combination pool index.

15. The communication device of claim 14, wherein the communication device receives the first downlink control information by the network indicated by the one of the first control resource combination pool index and the second control resource combination pool index.

16. The communication device of claim 1, wherein the first downlink control information comprises a field indicating the status of the transmission configuration indicator, and the instruction to perform the search space combination group switch according to the first downlink control information comprises:

when the field indicates the transmission configuration indicator state, switching to the first search space combination group, and monitoring the first search space combination group according to the transmission configuration indicator state.

17. The communication device of claim 16 wherein the first downlink control information is associated with a control resource combination pool index.

18. The communication device of claim 17, wherein the network indicated by the control resource combination pool index receives the downlink control information.

19. A network for monitoring and switching search space combinations, comprising:

at least one storage device; and

at least one processing circuit coupled to the at least one memory device, wherein the at least one memory device stores an instruction, and the at least one processing circuit is configured to execute the instruction, the instruction comprising:

generating an arrangement of a first search space combination group and a second search space combination group, wherein the first search space combination group is associated with a transmission configuration indicator state and the second search space combination group is associated with a plurality of transmission configuration indicator states;

transmitting the configuration to a communication device;

generating a first downlink control information for a search space combination group handover; and

transmitting the first downlink control information to the communication device.

20. A communication device for indicating and applying a transmission configuration indicator (transmission configuration index status) status, comprising:

At least one storage device; and

receiving a downlink control information from a network through a control resource combination;

wherein the downlink control information includes a transmission configuration indication Fu Lanwei and the transmission configuration indication Fu Lanwei indicates a transmission configuration indicator code point corresponding to at least one of a first transmission configuration indicator state or a second transmission configuration indicator state.

21. The communication device of claim 20, wherein the first transmission configuration indicator state is a downlink transmission configuration indicator state or an uplink transmission configuration indicator state, and the second transmission configuration indicator state is the downlink transmission configuration indicator state or the uplink transmission configuration indicator state.

22. The communication device of claim 20, wherein the control resource combination is configured with at least one transmission configuration indicator state indicated by the downlink control information, and the at least one transmission configuration indicator state comprises the at least one of the first transmission configuration indicator state or the second transmission configuration indicator state.

23. The communication device of claim 22, wherein the instructions further comprise:

at least one physical downlink control channel is received by the network over the control resource combination according to the at least one transmission configuration indicator state.

24. The communication device of claim 23, wherein a demodulation reference signal antenna end of the at least one physical downlink control channel and a plurality of reference signals provided by the at least one transmission configuration indicator state are quasi co-located over the control resource combination.

25. The communications apparatus of claim 20, wherein the control resource combination is associated with at least one of a plurality of user equipment specific search space combinations or a plurality of physical downlink control channel common search space combinations.

26. The communication device of claim 20, wherein the control resource combination is configured with a value of a control resource combination pool index, and the value of the control resource combination pool index is associated with at least one of a first transmission configuration indicator state or a second transmission configuration indicator state.

27. The communications apparatus of claim 20, wherein the transmission configuration indicator Fu Lanwei indicates at least one of the first transmission configuration indicator state, the second transmission configuration indicator state in a component carrier combination, or a bandwidth part combination in a component carrier list.

28. The communication device of claim 20, wherein the instructions further comprise:

an enable command is received from the network to map a plurality of transmission configuration indicator states to at least one transmission configuration indicator code point of the transmission configuration indicator field.

29. The communication device of claim 20, wherein the instructions further comprise:

transmitting an physical uplink control channel to the network according to a spatial configuration associated with at least one transmission configuration indicator state;

wherein the at least one transmission configuration indicator state comprises the at least one of the first transmission configuration indicator state or the second transmission configuration indicator state.

30. The communication device of claim 20 wherein the transmission configuration indicator code point is associated with a value of a control resource combination pool index.

31. The communication device of claim 20, wherein if the transmission configuration indicator code point corresponds to the first transmission configuration indicator state and the second transmission configuration indicator state, the first transmission configuration indicator state and the second transmission configuration indicator state are associated with a same value of a control resource combination pool index.

32. The communication device of claim 20, wherein the instructions further comprise:

transmitting an physical uplink control channel corresponding to the downlink control information including a transmission configuration indicator status indication to the network;

wherein a final symbol of the physical uplink control channel includes a hybrid automatic repeat request feedback.

33. The communication device of claim 32, wherein the instructions further comprise:

if the at least one of the first transmission configuration indicator state or the second transmission configuration indicator state is different from a previous transmission configuration indicator state indicated by a previous transmission configuration indicator state indication, the at least one of the first transmission configuration indicator state or the second transmission configuration indicator state indicated by the transmission configuration indication Fu Lanwei is applied from a time slot, wherein the time slot is at least time for beam application symbols after the final symbol of the physical uplink control channel.

34. A network for indicating and applying a transmission configuration indicator state, comprising:

at least one storage device; and

Generating a downlink control information;

transmitting the downlink control information to a communication device via a control resource combination;