Network communication method and device

Abstract

The invention provides a network communication method and device, and relates to the technical field of communication, according to the network communication method provided by the embodiment of the invention, network equipment can periodically send first configuration information of at least one first transmission receiving point (TRP) cluster to terminal equipment, the first configuration information is used for selecting an initially accessed resident TRP cluster from the at least one first TRP cluster when the terminal equipment is in an idle state or an inactive state; and in response to completion of initial access of the terminal device, updating a radio resource control (RRC) state of the terminal device to a connection state, and sending second configuration information of a second TRP cluster to the terminal device, the second configuration information being used for the terminal device to access the second TRP cluster in the connection state to perform data transmission. According to the method and the device, corresponding access and switching modes can be provided for UE in different states under a multi-node cooperative transmission network architecture, so that the UE in an idle state or an inactive state can be ensured to effectively access a network during initial access.

Description

Network communication method and device Technical Field

[0001] The present disclosure relates to the field of communication technology, and in particular to a network communication method and device. Background Art

[0002] With the continuous development of wireless communications, the requirements for communication capabilities are becoming increasingly higher. For future application scenarios such as augmented reality (AR) / virtual reality (VR), the Internet of Vehicles, and the Internet of Things, ultra-high-speed, ultra-low-latency, and ultra-large bandwidth communications will become the norm. To meet this requirement, an increasing number of new technologies are being proposed. Multiple Input Multiple Output (MIMO) technology has ushered in a new era in the development and utilization of spatial resources in mobile communication systems. MIMO brings network equipment close to the terminal. Structurally, no matter where the terminal moves, there will be some nearby Transmit and Receive Points (TRPs) to serve it. Therefore, a multi-node collaborative transmission network architecture is required to serve user equipment (UE).

[0003] To achieve distributed collaborative transmission, a terminal must first access / switch to the network before collaborative transmission can be performed on the service channel. However, traditional multi-node collaborative network architectures (such as cellular cell architectures) are only used during the service data transmission phase and do not configure corresponding access and switching methods for UEs in the initial access state. In a multi-node collaborative transmission network architecture, how to provide corresponding access and switching methods for UEs in different states is an urgent problem that needs to be solved.

[0004] Summary of the Invention

[0005] The present disclosure provides a network communication method and apparatus, which can provide corresponding access and switching modes for UEs in different states under a multi-node cooperative transmission network architecture.

[0006] A first aspect of the present disclosure provides a network communication method, applied to a network device, the method comprising:

[0007] Sending first configuration information of at least one first transmission reception point TRP cluster to a terminal device, where the first configuration information is used to select a resident TRP cluster for initial access in the at least one first TRP cluster when the terminal device is in an idle state or an inactive state;

[0008] In response to the terminal device completing initial access, updating the radio resource control (RRC) state of the terminal device to a connected state; and

[0009] Second configuration information of the second TRP cluster is sent to the terminal device, where the second configuration information is used for the terminal device to access the second TRP cluster in a connected state for data transmission.

[0010] In some embodiments of the present disclosure, the method further includes:

[0011] The search frequency point location when the terminal device initially accesses is determined through protocol agreement, and the search frequency point location is used by the terminal device to receive synchronization signals and system messages to complete downlink synchronization.

[0012] In some embodiments of the present disclosure, the first configuration information includes configuration parameters, and the sending of the first configuration information of at least one first transmission reception point (TRP) cluster to the terminal device includes:

[0013] Configuration parameters are periodically sent through broadcast signaling, where the configuration parameters include at least one of a time synchronization parameter, a frequency synchronization parameter, and a system message.

[0014] In some embodiments of the present disclosure, the method further includes:

[0015] In response to the random access request sent by the terminal device using the resident TRP cluster, a radio resource control RRC connection is established with the terminal device.

[0016] In some embodiments of the present disclosure, before sending the second configuration information of the second TRP cluster to the terminal device, the method further includes:

[0017] Send third configuration information and a reference signal to the terminal device, where the third configuration information is used by the terminal device to measure the reference signal to obtain a channel measurement result.

[0018] In some embodiments of the present disclosure, the method further includes:

[0019] Determine or update a second TRP cluster used for data transmission by the terminal device based on the channel measurement results.

[0020] In some embodiments of the present disclosure, the method further includes:

[0021] Receive the channel measurement result sent by the terminal device.

[0022] In some embodiments of the present disclosure, the second configuration information includes at least one of the following:

[0023] TRP cluster ID;

[0024] frequency;

[0025] bandwidth;

[0026] Time domain resource location;

[0027] Reference signal resource configuration;

[0028] Measurement result reporting configuration;

[0029] Beam information;

[0030] Beam index.

[0031] A second aspect of the present disclosure provides a network communication method, applied to a terminal device, the method comprising:

[0032] receiving first configuration information of at least one first transmission reception point TRP cluster sent by a network device;

[0033] In response to the terminal device being in an idle state or an inactive state, selecting a resident TRP cluster for initial access from the at least one first TRP cluster according to the first configuration information, and establishing a radio resource control RRC connection with the network device using the resident TRP cluster;

[0034] In response to the terminal device completing initial access, receiving second configuration information of a second TRP cluster sent by the network device in a connected state;

[0035] Access the second TRP cluster according to the second configuration information for data transmission.

[0036] In some embodiments of the present disclosure, the method further includes:

[0037] The search frequency point location during initial access is determined by protocol agreement, and the search frequency point location is used to receive synchronization signals and system messages to complete downlink synchronization.

[0038] In some embodiments of the present disclosure, the first configuration information includes configuration parameters, and the receiving network device sends the first configuration information of at least one first transmission reception point TRP cluster, including:

[0039] Configuration parameters periodically sent by the network device through broadcast signaling are received at the search frequency point, where the configuration parameters include at least one of a time synchronization parameter, a frequency synchronization parameter, and a system message.

[0040] In some embodiments of the present disclosure, establishing a radio resource control (RRC) connection with the network device using the resident TRP cluster includes:

[0041] The resident TRP cluster is used to send a random access request to the network device, so that the network device responds to the random access request and establishes a radio resource control RRC connection with the terminal device.

[0042] In some embodiments of the present disclosure, the method further includes:

[0043] receiving third configuration information and a reference signal sent by the network device;

[0044] The reference signal is measured according to the third configuration information to obtain a channel measurement result.

[0045] In some embodiments of the present disclosure, the method further includes:

[0046] The channel measurement result is sent to the network device, where the channel measurement result is used by the network device to determine or update a second TRP cluster used for data transmission by the terminal device.

[0047] In some embodiments of the present disclosure, the second configuration information includes at least one of the following:

[0048] TRP cluster ID;

[0049] frequency;

[0050] bandwidth;

[0051] Time domain resource location;

[0052] Reference signal resource configuration;

[0053] Measurement result reporting configuration;

[0054] Beam information;

[0055] Beam index.

[0056] A third aspect of the present disclosure provides a network communication device, applied to a network device, comprising:

[0057] A sending module, configured to send first configuration information of at least one first transmission reception point TRP cluster to a terminal device, wherein the first configuration information is used to select a resident TRP cluster for initial access in the at least one first TRP cluster when the terminal device is in an idle state or an inactive state;

[0058] a processing module, configured to update the radio resource control (RRC) state of the terminal device to a connected state in response to the terminal device completing initial access; and

[0059] The sending module is further used to send second configuration information of a second TRP cluster to the terminal device, where the second configuration information is used for the terminal device to access the second TRP cluster in a connected state for data transmission.

[0060] A fourth aspect of the present disclosure provides a network communication device, applied to a terminal device, the device comprising:

[0061] A receiving module, configured to receive first configuration information of at least one first transmission reception point TRP cluster sent by a network device;

[0062] a processing module, configured to, in response to the terminal device being in an idle state or an inactive state, select a resident TRP cluster for initial access from the at least one first TRP cluster according to the first configuration information, and establish a radio resource control RRC connection with the network device using the resident TRP cluster;

[0063] The receiving module is further configured to receive second configuration information of a second TRP cluster sent by the network device in response to the terminal device completing initial access;

[0064] The processing module is further used to access the second TRP cluster for data transmission according to the second configuration information.

[0065] The fifth aspect embodiment of the present disclosure provides a communication device, which includes: a transceiver; a memory; and a processor, which is connected to the transceiver and the memory respectively, and is configured to control the wireless signal reception and transmission of the transceiver by executing computer-executable instructions on the memory, and can implement the method of the first aspect embodiment or the second aspect embodiment of the present disclosure.

[0066] The sixth aspect embodiment of the present disclosure provides a computer storage medium, wherein the computer storage medium stores computer-executable instructions; after the computer-executable instructions are executed by a processor, the method of the first aspect embodiment or the second aspect embodiment of the present disclosure can be implemented.

[0067] The seventh aspect embodiment of the present disclosure provides a communication system, which includes a network device and a terminal device, wherein: the network device is configured to execute the method of the first aspect embodiment of the present disclosure; the terminal device is configured to execute the method of the second aspect embodiment of the present disclosure.

[0068] An embodiment of the present disclosure provides a network communication method. For a network architecture with multi-node collaborative transmission, the network device can configure two types of transmission receiving point TRP clusters. By periodically sending first configuration information of at least one first transmission receiving point TRP cluster, the terminal device selects a resident TRP cluster in the at least one first TRP cluster when in an idle state or an inactive state, and uses the resident TRP cluster to complete initial access; after the terminal device completes the initial access, the second configuration information of the second TRP cluster is sent to the terminal device, so that the terminal can access the second TRP cluster for data transmission according to the second configuration information. The technical solution in the present disclosure can provide different access and switching methods for different terminal device UE states for a network architecture with multi-node collaborative transmission, thereby ensuring that UEs in an idle state or an inactive state can effectively access the network during initial access.

[0069] Additional aspects and advantages of the present disclosure will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0070] The above and / or additional aspects and advantages of the present disclosure will become apparent and readily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0071] FIG1 is a flow chart of a network communication method according to an embodiment of the present disclosure;

[0072] FIG2 is a schematic diagram of a user-centric network architecture according to an embodiment of the present disclosure;

[0073] FIG3 is a flow chart of a network communication method according to an embodiment of the present disclosure;

[0074] FIG4 is a flow chart of a network communication method according to an embodiment of the present disclosure;

[0075] FIG5 is a flow chart of a network communication method according to an embodiment of the present disclosure;

[0076] FIG6 is a timing diagram of a network communication method according to an embodiment of the present disclosure;

[0077] FIG7 is a block diagram of a network communication device according to an embodiment of the present disclosure;

[0078] FIG8 is a block diagram of a network communication device according to an embodiment of the present disclosure;

[0079] FIG9 is a schematic structural diagram of a communication device according to an embodiment of the present disclosure;

[0080] FIG10 is a schematic structural diagram of a chip provided in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0081] The following describes in detail embodiments of the present disclosure, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present disclosure, and should not be construed as limiting the present disclosure.

[0082] With the continuous development of wireless communications, the demand for communication capabilities is increasing. For future applications such as augmented reality (AR) and virtual reality (VR), the Internet of Vehicles (IoV), and the Internet of Things (IoT), ultra-high-speed, ultra-low-latency, and ultra-large-bandwidth communications will become the norm. To meet these requirements, a growing number of new technologies are being proposed. Multiple-Input Multiple-Output (MIMO) technology has ushered in a new era in the development and utilization of spatial resources in mobile communication systems. Distributed MIMO can not only be applied to single-cell cellular base station systems, but can also replace multi-cell cellular base stations. Distributed MU-MIMO can form a cell-free mobile communication system, also known as cell-free technology. Cell-free technology can provide services to all users using the same time-frequency resources, eliminating the need for traditional inter-cell frequency division. System resources can be dynamically scheduled in all aspects. This improves the flexibility of existing system resource allocation and significantly increases resource utilization. For user equipment (UE), distributed MIMO technology means that multiple base stations can serve them simultaneously, eliminating cell handovers. The concept of cell boundaries is eliminated, resulting in a smoother user experience. In addition, multiple Transmit and Receive Points (TRPs) serve one terminal, which better guarantees the signal quality and can meet the terminal's high-speed and high-capacity business needs.

[0083] Distributed ultra-massive MIMO brings network equipment closer to the terminal. Structurally, no matter where the terminal moves, there will be some nearby TRPs serving it, truly realizing a user-centric network structure. Therefore, the network protocols and architecture design above the physical layer must also be compatible. A multi-node collaborative transmission network architecture is required to serve terminal devices.

[0084] However, for a terminal to achieve distributed collaborative transmission, it must first access / switch to the network before collaborative transmission can be performed on the service channel. However, traditional multi-node collaborative network architectures (such as cellular cell architectures) are only used during the service data transmission phase, and no corresponding access and switching methods are configured for UEs in the initial access state. In a multi-node collaborative transmission network architecture, how to provide corresponding access and switching methods for UEs in different states is an urgent problem that needs to be solved.

[0085] To this end, the present disclosure proposes a network communication method and device, which can propose a user-centric distributed TRP networking solution. By configuring unique TRP clusters for UEs in different states, different access and switching methods are provided for different UE states, and the TRP cluster can be updated as the user moves and the channel conditions change, thereby ensuring that UEs in idle or inactive states can effectively access the network during initial access.

[0086] The network communication method and device provided by this application are described in detail below with reference to the accompanying drawings.

[0087] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements, unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all possible embodiments consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.

[0088] The terms used in the embodiments of the present disclosure are for the purpose of describing specific embodiments only and are not intended to limit the embodiments of the present disclosure. The singular forms "a," "an," and "the" used in the embodiments of the present disclosure and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" as used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0089] It should be understood that although the terms first, second, third, etc. may be used to describe various information in the embodiments of the present disclosure, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of the embodiments of the present disclosure, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining".

[0090] Figure 1 shows a network communication method according to an embodiment of the present disclosure. As shown in Figure 1, the method is applied to a network device. As shown in Figure 2, the network device may include a TRP cluster, a centralized unit (CU) and a core network (CN). Among them, the TRP cluster is a collection of multiple TRPs configured by the network device for the UE, that is, corresponding to multiple transmission and reception points (m-TRP). The TRP cluster is unique to the UE, and some or all of the multiple TRPs included in the TRP cluster are used to transmit data to the UE or receive data from the UE; the CU is generally connected to multiple TRPs through optical fibers, and the information of each TRP is aggregated to the central controller to coordinate the scheduling of wireless resources. Different CUs exchange information through optical fibers or core networks. Among them, the network communication method may include the following steps:

[0091] Step 101: Send first configuration information of at least one first transmission receiving point TRP cluster to a terminal device. The first configuration information is used to select a resident TRP cluster for initial access from at least one first TRP cluster when the terminal device is in an idle state or an inactive state.

[0092] Among them, initial access refers to the network access of the terminal device in an idle state (such as when it is just turned on or ends the flight state) or an inactive state. At this time, the terminal device has no prior information of TRP, cannot measure TRP, and cannot directly measure and obtain a TRP cluster that meets the data transmission conditions. The first configuration information may include configuration parameters, and the configuration parameters include at least one of time synchronization parameters, frequency synchronization parameters, and system messages, or may also include other parameters for the UE in an idle state or inactive state to select the initial access TRP cluster in at least one first TRP cluster, which are not specifically limited here. Among them, the time synchronization parameters may be, for example, the system frame number, half-frame indication, etc.; the frequency synchronization parameters may be, for example, the initial bandwidth (Bandwidth Part, BWP), etc.; the system messages may be, for example, the public land mobile network (PLMN), TRP cluster identifier (ID), TRP cluster barred for access, etc.

[0093] In a specific application scenario, as shown in Figure 2, for each terminal device UE, the network device can configure a dedicated TRP cluster for it, and the TRP that transmits data for the UE can be selected from the TRP cluster. And in the networking architecture of the TRP cluster, two types of TRP clusters can be supported. Among them, the first type of TRP cluster (i.e., the first TRP cluster in the embodiment of the present disclosure) is mainly used for the initial access of idle state UE and inactive state UE, and can also be used for mobility management of connected state UE; the second TRP cluster (i.e., the second TRP cluster in the embodiment described below) serves the connected UE and provides data transmission services for the UE.

[0094] For the embodiment of the present disclosure, as a possible implementation method, the network device can send the first configuration information of at least one first transmission receiving point TRP cluster, for example, it can be sent periodically through a broadcast channel. At this time, there is no uplink or downlink between the network device and the terminal device, and the terminal device cannot report location information. Under this sending method, the network device does not send the first configuration information in a targeted manner to a specific terminal device. For a terminal device in an idle state or an inactive state, when a connection state conversion is required, the first configuration information sent by the network device can be received by frequency scanning, and the configuration parameters in the first configuration information and the received signal strength when the first configuration information is received by frequency scanning are used to select the first TRP cluster that is allowed to reside and has the largest signal strength from at least one first TRP cluster as the resident TRP cluster that initiates the initial random access. Then, the resident TRP cluster is used to establish a radio resource control (RRC) connection with the network device through a random access process. Only on the basis of establishing the RRC connection can the terminal device be scheduled by the network device to perform uplink transmission.

[0095] In some embodiments according to the present disclosure, the method may further include: determining a first TRP cluster, and first configuration information of the first TRP cluster. Specifically, the network device may divide the first TRP clusters in different areas according to the regional location, and configure the corresponding first configuration information for the first TRP cluster. After the network device sends the first configuration information through broadcast signaling, the terminal device can receive the first configuration information of at least one first TRP cluster in its area through frequency scanning, and obtain the received signal strength of the first configuration information during the receiving process.

[0096] Step 102: In response to the terminal device completing initial access, the radio resource control RRC state of the terminal device is updated to a connected state, and second configuration information of a second TRP cluster is sent to the terminal device. The second configuration information is used for the terminal device to access the second TRP cluster in a connected state for data transmission.

[0097] The second configuration information may include at least one of the following: TRP cluster identification ID, frequency, bandwidth, time domain resource location, reference signal resource configuration, measurement result reporting configuration, beam information, and beam index. In addition, the second configuration information may also include other configuration information that can be used by the terminal device to access the second TRP cluster for data transmission in a connected state, which is not specifically limited here.

[0098] In a specific application scenario, in response to the terminal device completing the initial access and updating the terminal device to a connected state, as a possible implementation method, for terminal devices with less data transmission traffic and only need to ensure basic RRC connection, the resident TRP cluster can be directly used for data transmission. For the embodiment of the present disclosure, in order to ensure the quality of communication and meet the high-speed and high-capacity business requirements of the terminal device, as a possible implementation method, after the RRC state of the terminal device is updated to a connected state, the network device can perform data transmission with the terminal device, and specifically, in the connected state, a third configuration information and a reference signal can be sent to the terminal device, so that the terminal device measures the reference signal according to the measurement parameters in the third configuration information, obtains the channel measurement result, and reports the channel measurement result to the network device. The network device can determine a second TRP cluster that meets the data transmission conditions of the terminal device based on the channel measurement result, and send the second configuration information of the second TRP cluster to the terminal device, so that the terminal device accesses the second TRP cluster for data transmission based on the second configuration information, which can ensure the data transmission quality of the terminal device. Among them, the data transmission condition may be that the TRP in the second TRP cluster satisfies the channel capacity maximization or resource utilization maximization, or it may also be that in the TRP of the second TRP cluster, the terminal device's reception quality of the reference signal is greater than a preset threshold, etc., and the data transmission condition is not specifically limited here. It should be noted that in the following embodiment steps in the present disclosure, the technical solution in the present disclosure is explained by taking the second TRP cluster in which the network device provides data transmission services to the terminal device, and the terminal device uses the second TRP cluster for data transmission as an example, but it does not constitute a specific limitation.

[0099] In summary, according to a network communication method provided by the present disclosure, for a network architecture with multi-node collaborative transmission, the network device can configure two types of transmission receiving point TRP clusters: the first type of TRP cluster is the first TRP cluster, which is used for terminal devices in an idle or inactive state to establish a wireless resource control RRC connection with the network device; the second type of TRP cluster is the second TRP cluster, which is used for the terminal device to transmit data with the network device in an RRC connection state. The network device periodically sends the first configuration information of at least one first transmission receiving point TRP cluster, so that when the terminal device is in an idle or inactive state, it selects a resident TRP cluster from at least one first TRP cluster and uses the resident TRP cluster to complete initial access; after the terminal device completes the initial access, the second configuration information of the second TRP cluster is sent to the terminal device, so that the terminal can access the second TRP cluster for data transmission according to the second configuration information. The technical solution in the present disclosure, for a network architecture with multi-node collaborative transmission, can provide different access and switching methods for different terminal device UE states, thereby ensuring that UEs in an idle or inactive state can effectively access the network during initial access.

[0100] FIG3 shows a network communication method according to an embodiment of the present disclosure. The method is applied to a network device and is based on the embodiment shown in FIG1 , as shown in FIG3 , and may include the following steps.

[0101] Step 201: Send first configuration information of at least one first transmission receiving point TRP cluster to the terminal device. The first configuration information is used to select a resident TRP cluster for initial access from at least one first TRP cluster when the terminal device is in an idle state or an inactive state.

[0102] For the embodiments of the present disclosure, before sending the first configuration information of at least one first transmission receiving point TRP cluster, the parameters of one or more first TRP clusters can be determined or configured. The parameters can be divided into two categories: the first type of parameters can be the search frequency position of the terminal device at the time of initial access as agreed by the protocol, and the search frequency position is used by the terminal device to receive synchronization signals and system messages and complete downlink synchronization. Among them, the search frequency position is the location of the search frequency when the terminal device initially accesses, which is similar to the synchronization grid; the second type of parameters can be determined by the network device and are configuration parameters sent down through broadcast signaling, i.e., the first configuration information.

[0103] For the embodiments of the present disclosure, for terminal devices in an idle state or an inactive state, the network device may periodically send first configuration information of at least one first transmission receiving point TRP cluster through broadcast signaling. The terminal device may receive the first configuration information at a search frequency position agreed upon based on the protocol, and select a resident TRP cluster to initiate initial random access from at least one first TRP cluster based on the first configuration information, and complete the random access process using the resident TRP cluster.

[0104] Step 202: In response to the random access request sent by the terminal device using the resident TRP cluster, a radio resource control RRC connection is established with the terminal device.

[0105] In a specific application scenario, after the terminal device selects a resident TRP cluster from at least one first TRP cluster to initiate initial random access based on the first configuration information, it can use the resident TRP cluster to send a random access request to the network device. Accordingly, after receiving the random access request, the network device can complete the random access process of the terminal device, and the terminal device enters the RRC connected state.

[0106] Step 203: In response to the terminal device completing the initial access, the radio resource control RRC state of the terminal device is updated to a connected state, and a second TRP cluster for the terminal device to perform data transmission is determined.

[0107] For the embodiments of the present disclosure, when the network device determines the second TRP cluster for the terminal device to perform data transmission, as a possible implementation method, after the RRC state of the terminal device is updated to the connected state, the network device can perform data transmission with the terminal device. Specifically, the network device can send third configuration information and a reference signal to the terminal device in the connected state, so that the terminal device measures the reference signal according to the measurement parameters in the third configuration information, obtains the channel measurement result, and reports the channel measurement result to the network device. The network device can determine the second TRP cluster that meets the data transmission conditions of the terminal device based on the channel measurement result; or, after determining the second TRP cluster, it can also update the second TRP cluster used for the terminal device to perform data transmission based on the movement of the terminal device and the change of the channel condition.

[0108] Among them, the third configuration information may include measurement parameters for the terminal device to measure the reference signal and the reporting configuration for the terminal device to report the channel measurement results. The measurement parameters may include the number of transmissions of the reference signal, transmission resources, frequency points, and measurement quantities, etc. The reporting configuration may include any one of periodic reporting, semi-periodic reporting, and non-periodic reporting. After the terminal device is updated to the RRC connection state, the network device may send the third configuration information and the reference signal to the terminal device, so that the terminal device measures the reference signal according to the measurement parameters in the third configuration information and obtains the channel measurement result. After obtaining the channel measurement result, the terminal device may also report the measured channel measurement result according to the reporting configuration in the configuration information. Accordingly, the network device can receive the channel measurement result sent by the terminal device. The channel measurement result is used to reflect the data transmission quality of the TRP cluster corresponding to the terminal device, that is, the channel quality.

[0109] It should be noted that the network-side device may send the third configuration information and the reference signal to the terminal device simultaneously, or may send the third configuration information to the terminal device and then send the reference signal to the terminal device. The order in which the third configuration information and the reference signal are sent is not specifically limited.

[0110] For the embodiment of the present disclosure, after the network device establishes a radio resource control RRC connection with the terminal device, the network device can obtain the location information of the terminal device, and then use the TRP around the terminal device to send the third configuration information and the reference signal to the terminal device to achieve measurement of the reference signal, and determine or update the second TRP cluster used for data transmission by the terminal device based on the channel measurement result. Accordingly, after receiving the channel measurement result sent by the terminal device, the network device can determine the second TRP cluster that has better data transmission quality under the current mobile state and channel conditions of the terminal device, that is, meets the data transmission conditions of the terminal device, by analyzing the channel measurement result obtained by the terminal device based on the third configuration information. Among them, the data transmission condition can be that the TRP in the second TRP cluster meets the channel capacity maximization or resource utilization maximization, or it can also be that in the TRP of the second TRP cluster, the terminal device's reception quality of the reference signal is greater than a preset threshold, etc. The data transmission condition is not specifically limited here.

[0111] Step 204: Send second configuration information of the second TRP cluster to the terminal device. The second configuration information is used for the terminal device to access the second TRP cluster in a connected state for data transmission.

[0112] For the specific implementation process of the embodiment of the present disclosure, please refer to the relevant description in step 102 of the embodiment, which will not be repeated here.

[0113] In summary, according to a network communication method provided by the present disclosure, for a network architecture with multi-node collaborative transmission, the network device can configure two types of transmission receiving point TRP clusters: the first type of TRP cluster is the first TRP cluster, which is used for terminal devices in an idle or inactive state to establish a wireless resource control RRC connection with the network device; the second type of TRP cluster is the second TRP cluster, which is used for the terminal device to transmit data with the network device in an RRC connection state. The network device periodically sends the first configuration information of at least one first transmission receiving point TRP cluster, so that when the terminal device is in an idle or inactive state, it selects a resident TRP cluster from at least one first TRP cluster and uses the resident TRP cluster to complete initial access; after the terminal device completes the initial access, the second configuration information of the second TRP cluster is sent to the terminal device, so that the terminal can access the second TRP cluster for data transmission according to the second configuration information. The technical solution in the present disclosure, for a network architecture with multi-node collaborative transmission, can provide different access and switching methods for different terminal device UE states, thereby ensuring that UEs in an idle or inactive state can effectively access the network during initial access.

[0114] FIG4 shows a network communication method according to an embodiment of the present disclosure. As shown in FIG4 , the method is applied to a terminal device and may include the following steps:

[0115] Step 301: Receive first configuration information of at least one first transmission reception point TRP cluster sent by a network device.

[0116] The first configuration information may include configuration parameters, including at least one of a time synchronization parameter, a frequency synchronization parameter, and a system message, or may also include other parameters for a UE in an idle or inactive state to select an initial access TRP cluster in at least one first TRP cluster, which is not specifically limited here. The time synchronization parameter may be, for example, a system frame number, a half-frame indication, etc.; the frequency synchronization parameter may be, for example, an initial bandwidth (Bandwidth Part, BWP), etc.; the system message may be, for example, a public land mobile network (PLMN), a TRP cluster identifier (ID), a TRP cluster barred from access, etc.

[0117] In a specific application scenario, the network device may send the first configuration information of at least one first transmission receiving point TRP cluster, for example, periodically through a broadcast channel. At this time, there is no uplink or downlink between the network device and the terminal device, and the terminal device cannot report location information. In this sending mode, the network device does not send the first configuration information in a targeted manner to a specific terminal device. For the embodiment of the present disclosure, when a terminal device in an idle state or an inactive state needs to switch its connection state, it can scan the first configuration information of at least one first TRP cluster in its area.

[0118] Step 302: In response to the terminal device being in an idle state or an inactive state, a resident TRP cluster for initial access is selected from at least one first TRP cluster according to the first configuration information, and a radio resource control RRC connection is established with the network device using the resident TRP cluster.

[0119] Among them, initial access refers to the network access of the terminal device in an idle state (such as when it is just turned on or ends the flight state) or in an inactive state. At this time, the terminal device has no prior information about TRP and cannot measure TRP.

[0120] In a specific application scenario, as shown in Figure 2, for each terminal device UE, the network device can configure a dedicated TRP cluster for it, and the TRP that transmits data for the UE can be selected from the TRP cluster. And in the networking architecture of the TRP cluster, two types of TRP clusters can be supported. Among them, the first type of TRP cluster (i.e., the first TRP cluster in the embodiment of the present disclosure) is mainly used for the initial access of idle state UE and inactive state UE, and can also be used for mobility management of connected state UE; the second TRP cluster (i.e., the second TRP cluster in the embodiment described below) serves the connected UE and provides data transmission services for the UE.

[0121] For the embodiments of the present disclosure, as a possible implementation method, for a terminal device in an idle state or an inactive state, the first configuration information of at least one first transmission receiving point TRP cluster periodically sent by the network device can be received by frequency scanning. In the process of frequency scanning to receive the first configuration information, the received signal strength of the first configuration information can also be obtained. Afterwards, the terminal device can use the configuration parameters in the first configuration information and the received signal strength when frequency scanning to receive the first configuration information to select the first TRP cluster that is allowed to reside and has the largest signal strength from at least one first TRP cluster as the resident TRP cluster for initiating initial random access. The resident TRP cluster is further used to initiate random access, complete the random access process and uplink synchronization, establish a radio resource control (RRC) connection with the network device, and enter the RRC connection state. Only on the basis of establishing the RRC connection can the terminal device be scheduled by the network device to perform uplink transmission.

[0122] Step 303: In response to the terminal device completing the initial access, receiving the second configuration information of the second TRP cluster sent by the network device in the connected state, and accessing the second TRP cluster for data transmission according to the second configuration information.

[0123] The second configuration information may include at least one of the following: TRP cluster identification ID, frequency, bandwidth, time domain resource location, reference signal resource configuration, measurement result reporting configuration, beam information, and beam index. In addition, the second configuration information may also include other configuration information that can be used by the terminal device to access the second TRP cluster for data transmission in a connected state, which is not specifically limited here.

[0124] For the embodiments of the present disclosure, as a possible implementation method, when the terminal device completes the initial access and updates to the RRC connection state, as a possible implementation method, for terminal devices with less data transmission traffic and only need to ensure the basic RRC connection, the resident TRP cluster can be directly used for data transmission; as a possible implementation method, in order to ensure the communication quality and meet the high-speed and high-capacity business requirements of the terminal device, when the RRC state of the terminal device is updated to the connection state, the network device can perform data transmission with the terminal device, specifically, it can send third configuration information and reference signals to the terminal device in the connection state, so that the terminal device measures the reference signal according to the measurement parameters in the third configuration information, obtains the channel measurement results, and reports the channel measurement results to the network device. The network device can determine the second TRP cluster that meets the data transmission conditions of the terminal device based on the channel measurement results, and send the second configuration information of the second TRP cluster to the terminal device. Accordingly, the terminal device can receive the second configuration information of the second TRP cluster sent by the network device, access the second TRP cluster for data transmission according to the second configuration information, and thereby ensure the data transmission quality of the terminal device. Among them, the data transmission condition may be that the TRP in the second TRP cluster satisfies the channel capacity maximization or resource utilization maximization, or it may also be that in the TRP of the second TRP cluster, the terminal device's reception quality of the reference signal is greater than a preset threshold, etc., and the data transmission condition is not specifically limited here. It should be noted that in the following embodiment steps in the present disclosure, the technical solution in the present disclosure is explained by taking the second TRP cluster in which the network device provides data transmission services to the terminal device, and the terminal device uses the second TRP cluster for data transmission as an example, but it does not constitute a specific limitation.

[0125] In summary, according to a network communication method provided by the present disclosure, for a network architecture with multi-node collaborative transmission, a UE in an idle state or an inactive state can, at the time of initial access, select a resident TRP cluster for initial access from at least one first TRP cluster based on the first configuration information sent by the network device, and use the resident TRP cluster to establish a radio resource control RRC connection with the network device. After entering the RRC connection state, the terminal device can receive the second configuration information of the second TRP cluster sent by the network device, and access the second TRP cluster for data transmission based on the second configuration information. The technical solution in the present disclosure, for a network architecture with multi-node collaborative transmission, can provide different access and switching methods for different terminal device UE states, thereby ensuring that a UE in an idle state or an inactive state can effectively access the network at the time of initial access.

[0126] FIG5 shows a network communication method according to an embodiment of the present disclosure. The method is applied to a terminal device, based on the embodiment shown in FIG5 , as shown in FIG4 , and may include the following steps.

[0127] Step 401: Receive first configuration information of at least one first transmission reception point TRP cluster sent by a network device.

[0128] In a specific application scenario, before receiving the first configuration information of at least one first transmission receiving point TRP cluster sent by the network device, the terminal device can determine the search frequency position at the time of initial access through a protocol agreement. The search frequency position is used to receive synchronization signals and system messages to complete downlink synchronization. The search frequency position is the location of the search frequency when the terminal device initially accesses, which is similar to a synchronization grid. For the embodiment of the present disclosure, as a possible implementation method, the terminal device can receive configuration parameters periodically sent by the network device through broadcast signaling at the search frequency position. The configuration parameters include but are not limited to at least one of time synchronization parameters, frequency synchronization parameters and system messages.

[0129] Step 402: In response to the terminal device being in an idle state or an inactive state, a resident TRP cluster for initial access is selected from at least one first TRP cluster according to the first configuration information, and a radio resource control RRC connection is established with the network device using the resident TRP cluster.

[0130] For the embodiment of the present disclosure, the terminal device can select a resident TRP cluster for initiating initial random access from at least one first TRP cluster according to the first configuration information, and use the resident TRP cluster to send a random access request to the network device, so that the network device responds to the random access request and establishes a radio resource control RRC connection with the terminal device, and the terminal device enters the RRC connection state. When the terminal device selects the resident TRP cluster from the first TRP cluster, as a possible implementation method, the first TRP cluster with the strongest signal among the TRP clusters allowed to reside can be selected from at least one first TRP cluster as the resident TRP cluster.

[0131] Step 403: Receive the third configuration information and reference signal sent by the network device, measure the reference signal according to the third configuration information to obtain a channel measurement result, and send the channel measurement result to the network device. The channel measurement result is used by the network device to determine or update the second TRP cluster used for data transmission of the terminal device.

[0132] Among them, the third configuration information may include measurement parameters for the terminal device to measure the reference signal and the reporting configuration for the terminal device to report the channel measurement results. The measurement parameters may include the number of transmissions of the reference signal, transmission resources, frequency points, and measurement quantities, etc. The reporting configuration may include any one of periodic reporting, semi-periodic reporting, and non-periodic reporting. By sending the third configuration information and the reference signal to the terminal device, the network device can enable the terminal device to measure the reference signal according to the measurement parameters in the third configuration information and obtain the channel measurement results. After obtaining the channel measurement results, the terminal device can also report the measured channel measurement results according to the reporting configuration in the configuration information. Accordingly, the network device can receive the channel measurement results sent by the terminal device. The channel measurement results are used to reflect the data transmission quality of the TRP cluster and TRP set corresponding to the terminal device, that is, the channel quality. After the network device receives the channel measurement results, it can further determine, based on the channel measurement results, a second TRP cluster that has better data transmission quality under the current mobility status and channel conditions of the terminal device, that is, meets the data transmission conditions of the terminal device; or, after determining the second TRP cluster, it can also update the second TRP cluster used for data transmission of the terminal device according to the movement of the terminal device and changes in channel conditions.

[0133] Step 404: In response to the terminal device completing the initial access, receiving the second configuration information of the second TRP cluster sent by the network device in the connected state, and accessing the second TRP cluster for data transmission according to the second configuration information.

[0134] Among them, the second TRP cluster is a TRP cluster that has better data transmission quality under the current mobility state and channel conditions of the terminal device, that is, meets the data transmission conditions of the terminal device, after the network device receives the channel measurement results sent by the terminal device, by analyzing the channel measurement results obtained by the terminal device according to the third configuration information. Among them, the data transmission condition can be that the TRP in the second TRP cluster meets the channel capacity maximization or resource utilization maximization, or it can also be that in the TRP of the second TRP cluster, the terminal device's reception quality of the reference signal is less than a preset threshold, etc. The data transmission condition is not specifically limited here. For the embodiment of the present disclosure, after receiving the second configuration information of the second TRP cluster sent by the network device, the terminal device can directly access the second TRP cluster based on the second configuration information for data transmission.

[0135] In summary, according to a network communication method provided by the present disclosure, for a network architecture with multi-node collaborative transmission, a UE in an idle state or an inactive state can, at the time of initial access, select a resident TRP cluster for initial access from at least one first TRP cluster based on the first configuration information sent by the network device, and use the resident TRP cluster to establish a radio resource control RRC connection with the network device. After entering the RRC connection state, the terminal device can receive the second configuration information of the second TRP cluster sent by the network device, and access the second TRP cluster for data transmission based on the second configuration information. The technical solution in the present disclosure, for a network architecture with multi-node collaborative transmission, can provide different access and switching methods for different terminal device UE states, thereby ensuring that a UE in an idle state or an inactive state can effectively access the network at the time of initial access.

[0136] Figure 6 is a timing diagram of a network communication method according to an embodiment of the present disclosure. The method is applied to a communication system, which includes: a network device and a terminal device. The network device may include the TRP cluster, a centralized unit (CU), and a core network (CN) corresponding to Figure 2. During specific execution, the network device may periodically send first configuration information of at least one first transmission receiving point TRP cluster to the terminal device, and the first configuration information is used to select a resident TRP cluster for initiating initial access from at least one first TRP cluster when the terminal device is in an idle state or an inactive state; the terminal device selects a resident TRP cluster for initial access from at least one first TRP cluster according to the first configuration information when the terminal device is in an idle state or an inactive state, and uses the resident TRP cluster to establish a radio resource control RRC connection with the network device; the network device updates the terminal device to a connected state in response to the terminal device completing the initial access; the network device sends third configuration information and a reference signal to the terminal device; the terminal device measures the reference signal according to the third configuration information to obtain a channel measurement result; the terminal device sends the channel measurement result to the network device; the network device determines or updates a second TRP cluster for data transmission for the terminal device according to the channel measurement result; the network device sends second configuration information of the second TRP cluster to the terminal device; the terminal device accesses the second TRP cluster for data transmission according to the second configuration information.

[0137] Referring to FIG6 , the method includes the following steps.

[0138] Step 501: The network device sends first configuration information of at least one first transmission reception point TRP cluster to the terminal device.

[0139] Among them, the first configuration information is used to select a resident TRP cluster for initiating initial access in at least one first TRP cluster when the terminal device is in an idle state or an inactive state. Initial access refers to the network access of the terminal device in an idle state (such as when it is just turned on or in flight) or an inactive state. At this time, the terminal device has no prior information of TRP and cannot measure TRP, and thus cannot directly measure and obtain a TRP cluster that meets the data transmission conditions. The first configuration information may include configuration parameters, and the configuration parameters include at least one of time synchronization parameters, frequency synchronization parameters and system messages, or may also include other parameters for the UE in an idle state or an inactive state to select an initial access TRP cluster in at least one first TRP cluster, which are not specifically limited here. Among them, the time synchronization parameters may be, for example, the system frame number, half-frame indication, etc.; the frequency synchronization parameters may be, for example, the initial bandwidth (Bandwidth Part, BWP), etc.; the system messages may be, for example, the public land mobile network (PLMN), TRP cluster identifier (ID), TRP cluster barred for access, etc.

[0140] For the embodiment of the present disclosure, as a possible implementation method, the network device can send the first configuration information of at least one first transmission receiving point TRP cluster, for example, it can be sent periodically through a broadcast channel. At this time, there is no uplink or downlink between the network device and the terminal device, and the terminal device cannot report location information. Under this sending method, the network device does not send the first configuration information in a targeted manner to a specific terminal device. For a terminal device in an idle state or an inactive state, when a connection state conversion is required, the first configuration information sent by the network device can be received by frequency scanning, and the configuration parameters in the first configuration information and the received signal strength when the first configuration information is received by frequency scanning are used to select the first TRP cluster that is allowed to reside and has the largest signal strength from at least one first TRP cluster as the resident TRP cluster that initiates the initial random access. Then, the resident TRP cluster is used to establish a radio resource control (RRC) connection with the network device through a random access process. Only on the basis of establishing the RRC connection can the terminal device be scheduled by the network device to perform uplink transmission.

[0141] In some embodiments according to the present disclosure, the method may further include: determining a first TRP cluster, and first configuration information of the first TRP cluster. Specifically, the network device may divide the first TRP clusters in different areas according to the regional location, and configure the corresponding first configuration information for the first TRP cluster. After the network device sends the first configuration information through broadcast signaling, the terminal device can receive the first configuration information of at least one first TRP cluster in its area through frequency scanning, and obtain the received signal strength of the first configuration information during the receiving process.

[0142] Step 502: When the terminal device is in an idle state or an inactive state, it selects a resident TRP cluster for initial access from at least one first TRP cluster according to the first configuration information, and uses the resident TRP cluster to establish a radio resource control RRC connection with the network device.

[0143] For the embodiments of the present disclosure, as a possible implementation method, for a terminal device in an idle state or an inactive state, the first configuration information of at least one first transmission receiving point TRP cluster periodically sent by the network device can be received by frequency scanning. In the process of frequency scanning to receive the first configuration information, the received signal strength of the first configuration information can also be obtained. Afterwards, the terminal device can use the configuration parameters in the first configuration information and the received signal strength when frequency scanning to receive the first configuration information to select the first TRP cluster that is allowed to reside and has the largest signal strength from at least one first TRP cluster as the resident TRP cluster for initiating initial random access. The resident TRP cluster is further used to initiate random access, complete the random access process and uplink synchronization, establish a radio resource control (RRC) connection with the network device, and enter the RRC connection state. Only on the basis of establishing the RRC connection can the terminal device be scheduled by the network device to perform uplink transmission.

[0144] Step 503: In response to the terminal device completing the initial access, the network device updates the terminal device to a connected state.

[0145] For the embodiments of the present disclosure, the network device may establish a radio resource control RRC connection with the terminal device in response to a random access request sent by the terminal device using the resident TRP cluster, and update the terminal device to the RRC connection state. In the RRC connection state, the network device may determine a second TRP cluster that provides data transmission services for the terminal device, and send second configuration information of the second TRP cluster to the terminal device, so that the terminal device accesses the second TRP cluster for data transmission based on the second configuration information.

[0146] Accordingly, when the terminal device completes the initial access and updates to the RRC connection state, as a possible implementation method, for terminal devices with less data transmission traffic and only need to ensure the basic RRC connection, the resident TRP cluster can be directly used for data transmission, that is, the subsequent embodiment steps 504 to 509 are not continued to be executed; as a possible implementation method, in order to ensure the communication quality and meet the high-speed and high-capacity business requirements of the terminal device, the network device can determine the second TRP cluster that provides data transmission services for the terminal device, and send the second configuration information of the second TRP cluster to the terminal device. Accordingly, the terminal device can receive the second configuration information of the second TRP cluster sent by the network device, and access the second TRP cluster for data transmission according to the second configuration information, thereby ensuring the data transmission quality of the terminal device. It should be noted that in the following embodiment steps in the present disclosure, the technical solution in the present disclosure is described by taking the second TRP cluster in which the network device provides data transmission services for the terminal device and the terminal device uses the second TRP cluster for data transmission as an example, but it does not constitute a specific limitation.

[0147] Step 504: The network device sends third configuration information and a reference signal to the terminal device.

[0148] For the embodiments of the present disclosure, when the network device determines the second TRP cluster for the terminal device to perform data transmission, as a possible implementation method, after the RRC state of the terminal device is updated to the connected state, the network device can perform data transmission with the terminal device. Specifically, the network device can send third configuration information and a reference signal to the terminal device in the connected state, so that the terminal device measures the reference signal according to the measurement parameters in the third configuration information, obtains the channel measurement result, and reports the channel measurement result to the network device. The network device can determine the second TRP cluster that meets the data transmission conditions of the terminal device based on the channel measurement result; or, after determining the second TRP cluster, it can also update the second TRP cluster used for the terminal device to perform data transmission based on the movement of the terminal device and the change of the channel condition.

[0149] Among them, the third configuration information may include measurement parameters for the terminal device to measure the reference signal and the reporting configuration for the terminal device to report the channel measurement results. The measurement parameters may include the number of transmissions of the reference signal, transmission resources, frequency points, and measurement quantities, etc. The reporting configuration may include any one of periodic reporting, semi-periodic reporting, and non-periodic reporting. By sending the third configuration information and the reference signal to the terminal device, the network device can enable the terminal device to measure the reference signal according to the measurement parameters in the third configuration information and obtain the channel measurement result. After obtaining the channel measurement result, the terminal device can also report the measured channel measurement result according to the reporting configuration in the configuration information. Accordingly, the network device can receive the channel measurement result sent by the terminal device. The channel measurement result is used to reflect the data transmission quality of the TRP cluster corresponding to the terminal device, that is, the channel quality.

[0150] It should be noted that the network-side device may send the third configuration information and the reference signal to the terminal device simultaneously, or may send the third configuration information to the terminal device and then send the reference signal to the terminal device. The order in which the third configuration information and the reference signal are sent is not specifically limited.

[0151] Step 505: The terminal device measures the reference signal according to the third configuration information to obtain a channel measurement result.

[0152] Step 506: The terminal device sends a channel measurement result to the network device. The channel measurement result is used by the network device to determine or update a second TRP cluster used for data transmission by the terminal device.

[0153] In the disclosed embodiments, the terminal device may measure the reference signal based on the measurement parameters in the third configuration information to obtain a channel measurement result. After obtaining the channel measurement result, the terminal device may also report the measured channel measurement result based on the reporting configuration in the configuration information. Accordingly, the network device may receive the channel measurement result sent by the terminal device. The channel measurement result is used to reflect the data transmission quality, i.e., the channel quality, of the terminal device's corresponding configured TRP cluster and TRP set.

[0154] Step 507: The network device determines or updates a second TRP cluster for the terminal device to perform data transmission based on the channel measurement result.

[0155] For the embodiments of the present disclosure, after receiving the channel measurement results sent by the terminal device, the network device can determine a second TRP cluster that has better data transmission quality under the current mobility state and channel conditions of the terminal device, that is, meets the data transmission conditions of the terminal device, by analyzing the channel measurement results obtained by the terminal device based on the third configuration information; or, after determining the second TRP cluster, it can also update the second TRP cluster used for data transmission by the terminal device according to the movement of the terminal device and the change of the channel conditions. The data transmission condition can be that the TRP in the second TRP cluster meets the channel capacity maximization or resource utilization maximization, or it can also be that in the TRP of the second TRP cluster, the terminal device's reception quality of the reference signal is less than a preset threshold, etc. The data transmission condition is not specifically limited here.

[0156] Step 508: The network device sends second configuration information of the second TRP cluster to the terminal device.

[0157] Step 509: The terminal device accesses the second TRP cluster for data transmission according to the second configuration information.

[0158] By applying the network communication method provided in this embodiment, for a network architecture with multi-node collaborative transmission, a UE in an idle state or an inactive state can select a resident TRP cluster for initial access in at least one first TRP cluster based on the first configuration information sent by the network device during initial access, and use the resident TRP cluster to establish a radio resource control RRC connection with the network device. After entering the RRC connection state, the terminal device can receive the second configuration information of the second TRP cluster sent by the network device, and access the second TRP cluster for data transmission based on the second configuration information. The technical solution disclosed in the present invention can provide different access and switching methods for different terminal device UE states for a network architecture with multi-node collaborative transmission, thereby ensuring that a UE in an idle state or an inactive state can effectively access the network during initial access.

[0159] In the embodiments provided above, the methods provided in the embodiments of the present application are described from the perspectives of network devices and terminal devices, respectively. In order to implement the various functions in the methods provided in the embodiments of the present application, the network devices and terminal devices may include hardware structures and software modules, and the aforementioned functions may be implemented in the form of hardware structures, software modules, or hardware structures plus software modules. A particular function of the aforementioned functions may be implemented in the form of hardware structures, software modules, or hardware structures plus software modules.

[0160] Corresponding to the wireless resource control RRC connection processing method provided in the above-mentioned embodiments, the present disclosure also provides a network communication device. Since the network communication device provided in the embodiment of the present disclosure corresponds to the network communication method provided in the above-mentioned embodiments, the implementation method of the network communication method is also applicable to the network communication device provided in this embodiment and will not be described in detail in this embodiment.

[0161] FIG7 is a schematic structural diagram of a network communication apparatus 700 provided according to an embodiment of the present disclosure. The network communication apparatus 700 can be applied to network equipment.

[0162] As shown in FIG7 , the apparatus 700 may include:

[0163] A sending module 710 may be configured to send first configuration information of at least one first transmission reception point TRP cluster to a terminal device, where the first configuration information is used to select a resident TRP cluster for initial access from the at least one first TRP cluster when the terminal device is in an idle state or an inactive state;

[0164] The processing module 720 may be configured to update the radio resource control (RRC) state of the terminal device to a connected state in response to the terminal device completing initial access; and

[0165] The sending module 710 can also be used to send second configuration information of the second TRP cluster to the terminal device. The second configuration information is used for the terminal device to access the second TRP cluster in a connected state for data transmission.

[0166] In some embodiments of the present disclosure, the processing module 720 can be used to determine the search frequency position when the terminal device initially accesses through protocol agreement. The search frequency position is used by the terminal device to receive synchronization signals and system messages to complete downlink synchronization.

[0167] In some embodiments of the present disclosure, the first configuration information includes configuration parameters. The sending module 710 can be used to periodically send the configuration parameters through broadcast signaling. The configuration parameters include at least one of time synchronization parameters, frequency synchronization parameters and system messages.

[0168] In some embodiments of the present disclosure, the processing module 720 may also be configured to establish a radio resource control (RRC) connection with the terminal device in response to a random access request sent by the terminal device using the resident TRP cluster.

[0169] In some embodiments of the present disclosure, the sending module 720 may be configured to send third configuration information and a reference signal to a terminal device, where the third configuration information is used by the terminal device to measure the reference signal to obtain a channel measurement result.

[0170] In some embodiments of the present disclosure, the processing module 720 may also be used to determine or update a second TRP cluster used for data transmission by the terminal device based on the channel measurement result.

[0171] In some embodiments of the present disclosure, as shown in FIG7 , the apparatus 700 may further include: a receiving module 730 ;

[0172] The receiving module 730 may be configured to receive a channel measurement result sent by a terminal device.

[0173] In some embodiments of the present disclosure, the second configuration information includes at least one of the following:

[0174] TRP cluster ID;

[0175] frequency;

[0176] bandwidth;

[0177] Time domain resource location;

[0178] Reference signal resource configuration;

[0179] Measurement result reporting configuration;

[0180] Beam information;

[0181] Beam index.

[0182] FIG8 is a schematic structural diagram of a network communication device 800 provided according to an embodiment of the present disclosure. The network communication device 800 can be applied to a terminal device.

[0183] As shown in FIG8 , the apparatus 800 may include:

[0184] The receiving module 810 may be configured to receive first configuration information of at least one first transmission reception point TRP cluster sent by a network device;

[0185] The processing module 820 may be configured to select, in response to the terminal device being in an idle state or an inactive state, a resident TRP cluster for initial access from at least one first TRP cluster according to the first configuration information, and establish a radio resource control RRC connection with the network device using the resident TRP cluster;

[0186] The receiving module 810 may be further configured to receive, in response to the terminal device completing initial access, second configuration information of a second TRP cluster sent by the network device in a connected state;

[0187] The processing module 820 can also be used to access the second TRP cluster for data transmission according to the second configuration information.

[0188] In some embodiments of the present disclosure, the processing module 820 may be used to determine a search frequency location during initial access through protocol agreement, where the search frequency location is used to receive synchronization signals and system messages to complete downlink synchronization.

[0189] In some embodiments of the present disclosure, the first configuration information includes configuration parameters, and the receiving module 810 can be used to receive configuration parameters periodically sent by the network device through broadcast signaling at the search frequency location, and the configuration parameters include time synchronization parameters, frequency synchronization parameters and at least one of system messages.

[0190] In some embodiments of the present disclosure, as shown in FIG8 , the apparatus 800 may further include: a sending module 830 ;

[0191] The sending module 830 can be used to use the resident TRP cluster to send a random access request to the network device, so that the network device responds to the random access request and establishes a radio resource control RRC connection with the terminal device.

[0192] In some embodiments of the present disclosure, the receiving module 810 may be configured to receive third configuration information and a reference signal sent by a network device; and the processing module 820 may be configured to measure the reference signal according to the third configuration information to obtain a channel measurement result.

[0193] In some embodiments of the present disclosure, the sending module 830 may be used to send channel measurement results to a network device, and the channel measurement results are used by the network device to determine or update a second TRP cluster for data transmission by a terminal device.

[0194] In some embodiments of the present disclosure, the second configuration information includes at least one of the following:

[0195] TRP cluster ID;

[0196] frequency;

[0197] bandwidth;

[0198] Time domain resource location;

[0199] Reference signal resource configuration;

[0200] Measurement result reporting configuration;

[0201] Beam information;

[0202] Beam index.

[0203] Please refer to Figure 9, which is a schematic diagram of the structure of a communication device 1300 provided in an embodiment of the present application. Communication device 1300 can be a network device or a user device, or a chip, chip system, or processor that supports the network device to implement the above method. It can also be a chip, chip system, or processor that supports the user device to implement the above method. This device can be used to implement the method described in the above method embodiment. For details, please refer to the description of the above method embodiment.

[0204] The communication device 1300 may include one or more processors 1301. The processor 1301 may be a general-purpose processor or a dedicated processor. For example, it may be a baseband processor or a central processing unit. The baseband processor may be used to process communication protocols and communication data, and the central processing unit may be used to control the communication device (e.g., a base station, a baseband chip, a terminal device, a terminal device chip, a DU or CU, etc.), execute computer programs, and process computer program data.

[0205] Optionally, the communication device 1300 may further include one or more memories 1302, on which a computer program 1304 may be stored. The processor 1301 executes the computer program 1304 to cause the communication device 1300 to perform the method described in the above method embodiment. Optionally, the memory 1302 may also store data. The communication device 1300 and the memory 1302 may be provided separately or integrated together.

[0206] Optionally, the communication device 1300 may further include a transceiver 1305 and an antenna 1306. The transceiver 1305 may be referred to as a transceiver unit, a transceiver, or a transceiver circuit, and is configured to implement transceiver functions. The transceiver 1305 may include a receiver and a transmitter. The receiver may be referred to as a receiver or a receiving circuit, and is configured to implement a receiving function; the transmitter may be referred to as a transmitter or a transmitting circuit, and is configured to implement a transmitting function.

[0207] Optionally, the communication device 1300 may further include one or more interface circuits 1307. The interface circuit 1307 is configured to receive code instructions and transmit the instructions to the processor 1301. The processor 1301 executes the code instructions to enable the communication device 1300 to perform the method described in the above method embodiment.

[0208] In one implementation, processor 1301 may include a transceiver for implementing receiving and transmitting functions. For example, the transceiver may be a transceiver circuit, an interface, or an interface circuit. The transceiver circuit, interface, or interface circuit for implementing the receiving and transmitting functions may be separate or integrated. The transceiver circuit, interface, or interface circuit may be used for reading and writing code / data, or may be used for transmitting or delivering signals.

[0209] In one implementation, processor 1301 may store a computer program 1303. Computer program 1303, when executed on processor 1301, enables communication device 1300 to perform the method described in the above method embodiment. Computer program 1303 may be embedded in processor 1301, in which case processor 1301 may be implemented by hardware.

[0210] In one implementation, the communication device 1300 may include a circuit that can implement the functions of sending, receiving, or communicating in the aforementioned method embodiments. The processor and transceiver described in this application can be implemented on an integrated circuit (IC), an analog IC, a radio frequency integrated circuit RFIC, a mixed signal IC, an application specific integrated circuit (ASIC), a printed circuit board (PCB), an electronic device, etc. The processor and transceiver can also be manufactured using various IC process technologies, such as complementary metal oxide semiconductor (CMOS), N-type metal oxide semiconductor (nMetal-oxide-semiconductor, NMOS), P-type metal oxide semiconductor (positive channel metal oxide semiconductor, PMOS), bipolar junction transistor (bipolar junction transistor, BJT), bipolar CMOS (BiCMOS), silicon germanium (SiGe), gallium arsenide (GaAs), etc.

[0211] The communication device described in the above embodiments may be a network device or a user device, but the scope of the communication device described in this application is not limited thereto, and the structure of the communication device may not be limited to FIG9 . The communication device may be an independent device or may be part of a larger device. For example, the communication device may be:

[0212] (1) An independent integrated circuit (IC), or chip, or chip system or subsystem;

[0213] (2) a collection of one or more ICs, optionally including a storage component for storing data and computer programs;

[0214] (3) ASIC, such as modem;

[0215] (4) Modules that can be embedded in other devices;

[0216] (5) Receivers, terminal devices, intelligent terminal devices, cellular phones, wireless devices, handheld devices, mobile units, vehicle-mounted devices, network devices, cloud devices, artificial intelligence devices, etc.;

[0217] (6)Others, etc.

[0218] If the communication device can be a chip or a chip system, please refer to the schematic diagram of the chip structure shown in Figure 10. The chip shown in Figure 10 includes a processor 1401 and an interface 1402. The number of processors 1401 can be one or more, and the number of interfaces 1402 can be multiple.

[0219] Optionally, the chip further includes a memory 1403, which is used to store necessary computer programs and data.

[0220] Those skilled in the art will also appreciate that the various illustrative logical blocks and steps listed in the embodiments of the present application can be implemented by electronic hardware, computer software, or a combination of both. Whether such functions are implemented by hardware or software depends on the specific application and the design requirements of the entire system. Those skilled in the art may use various methods to implement the functions for each specific application, but such implementation should not be construed as exceeding the scope of protection of the embodiments of the present application.

[0221] The present application also provides a readable storage medium having instructions stored thereon, which implement the functions of any of the above method embodiments when executed by a computer.

[0222] The present application also provides a computer program product, which implements the functions of any of the above method embodiments when executed by a computer.

[0223] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer programs. When the computer program is loaded and executed on a computer, the process or function according to the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer program can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer program can be transmitted from one website, computer, server or data center to another website, computer, server or data center via wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server or data center that includes one or more available media integrated. Available media may be magnetic media (eg, floppy disks, hard disks, tapes), optical media (eg, high-density digital video discs (DVDs)), or semiconductor media (eg, solid state disks (SSDs)).

[0224] The present disclosure proposes a network communication method and apparatus, which can solve the problems of poor communication quality of edge users and the need for frequent cell switching in existing multi-node cooperative network architectures.

[0225] Based on the present disclosure, an example of a specific solution is as follows:

[0226] 1. Network equipment

[0227] 1. Determine or configure parameters for one or more first TRP clusters. Parameters can be divided into two categories, as follows:

[0228] a) The first type of parameters is determined by the protocol, including the location of the search frequency during initial access, which is similar to the synchronization grid.

[0229] b) The second type of parameters are determined by network devices and sent through broadcast signaling, including:

[0230] Time synchronization parameters, such as system frame number, half-frame indication, etc.;

[0231] Frequency synchronization parameters, such as initial BWP;

[0232] Other system messages, such as PLMN, TRP cluster ID, TRP cluster barred, etc.

[0233] 2. In response to the terminal random access request, complete the terminal random access procedure.

[0234] 3. After completing random access, the terminal enters the RRC connection state, updates the terminal status and indicates the configuration information of the second TRP cluster of the terminal.

[0235] Configuration information includes at least one of the following

[0236] TRP cluster ID

[0237] Frequency, bandwidth, and time domain resource location

[0238] Reference signal resource configuration, reference signal reporting configuration

[0239] Beam information and beam index

[0240] 2. Terminal side

[0241] 1. Determine or receive the configuration parameters of the first TRP cluster. When a paging message is received or an uplink service arrives, the UE selects or reselects a TRP cluster based on the configuration parameters of the first TRP cluster, selects a suitable TRP cluster to reside in, and initiates random access. The UE includes at least one of the following operations, the specific process is as follows:

[0242] a) Receive the synchronization signal through the initial frequency search and complete the downlink synchronization

[0243] b) Receive parameters broadcast by network devices

[0244] c) Initiate random access, complete random access and uplink synchronization, and enter the RRC connected state

[0245] d) Receive the configuration parameters of the second TRP cluster

[0246] 2. Data transmission based on the configuration parameters of the second TRP cluster

[0247] In summary, the present disclosure has the following beneficial technical effects: the network device can be configured with two transmission receiving point TRP clusters, and by periodically sending the first configuration information of at least one first transmission receiving point TRP cluster to the terminal device, the terminal device selects a resident TRP cluster from at least one first TRP cluster when in an idle state or an inactive state, and uses the resident TRP cluster to complete initial access; after the terminal device completes the initial access, the second configuration information of the second TRP cluster is sent to the terminal device, so that the terminal can access the second TRP cluster for data transmission according to the second configuration information. The technical solution in the present disclosure can provide different access and switching methods for different terminal device UE states for a network architecture with multi-node collaborative transmission, thereby ensuring that UEs in an idle state or an inactive state can effectively access the network during initial access.

[0248] Those skilled in the art will understand that the various numerical numbers such as first and second involved in this application are only for the convenience of description and are not used to limit the scope of the embodiments of this application, and also indicate the order of precedence.

[0249] In this application, at least one can also be described as one or more, and multiple can be two, three, four or more, which is not limited in this application. In the embodiments of this application, for a technical feature, the technical features in the technical feature are distinguished by "first", "second", "third", "A", "B", "C" and "D", and there is no order of precedence or size between the technical features described by "first", "second", "third", "A", "B", "C" and "D".

[0250] As used herein, the terms "machine-readable medium" and "computer-readable medium" refer to any computer program product, apparatus, and / or device (e.g., a magnetic disk, an optical disk, a memory, a programmable logic device (PLD)) for providing machine instructions and / or data to a programmable processor, including a machine-readable medium that receives machine instructions as a machine-readable signal. The term "machine-readable signal" refers to any signal for providing machine instructions and / or data to a programmable processor.

[0251] The systems and techniques described herein can be implemented in a computing system that includes back-end components (e.g., as a data server), or a computing system that includes middleware components (e.g., an application server), or a computing system that includes front-end components (e.g., a user computer having a graphical user interface or a web browser through which a user can interact with implementations of the systems and techniques described herein), or a computing system that includes any combination of such back-end components, middleware components, or front-end components. The components of the system can be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include a local area network (LAN), a wide area network (WAN), and the Internet.

[0252] Computer systems may include clients and servers. A client and server are generally remote from each other and typically interact through a communication network. The client and server relationship arises through computer programs running on the respective computers and having a client-server relationship to each other.

[0253] It should be understood that the various forms of the processes shown above can be used to reorder, add, or delete steps. For example, the steps described in this disclosure can be performed in parallel, sequentially, or in a different order, as long as the desired results of the technical solutions disclosed in this disclosure can be achieved. This is not limited herein.

[0254] Furthermore, it should be understood that the various embodiments of the present application may be implemented individually or in combination with other embodiments where the solution permits.

[0255] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0256] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0257] The above are merely specific embodiments of the present application, but the scope of protection of this application is not limited thereto. Any modifications or substitutions that can be readily conceived by a person skilled in the art within the technical scope disclosed in this application are intended to be encompassed by the scope of protection of this application. Therefore, the scope of protection of this application shall be subject to the scope of protection of the claims.

Claims

1. A network communication method, applied to a network device, characterized in that: The method comprises: Sending first configuration information of at least one first transmission reception point TRP cluster to a terminal device, wherein the first configuration information is used to select a resident TRP cluster for initial access in the at least one first TRP cluster when the terminal device is in an idle state or an inactive state; In response to the terminal device completing initial access, updating the radio resource control RRC state of the terminal device to a connected state; and Send second configuration information of the second TRP cluster to the terminal device, where the second configuration information is used for the terminal device to access the second TRP cluster in a connected state for data transmission.

2. The method according to claim 1, characterized in that: The method further comprises: The search frequency point position when the terminal device initially accesses is determined through protocol agreement, and the search frequency point position is used by the terminal device to receive synchronization signals and system messages to complete downlink synchronization.

3. The method according to claim 1, characterized in that The first configuration information includes configuration parameters, and the sending of the first configuration information of at least one first transmission reception point TRP cluster to the terminal device includes: Configuration parameters are periodically sent through broadcast signaling, where the configuration parameters include at least one of a time synchronization parameter, a frequency synchronization parameter, and a system message.

4. The method according to claim 1, characterized in that: The method further comprises: In response to the random access request sent by the terminal device using the resident TRP cluster, a radio resource control RRC connection is established with the terminal device.

5. The method according to claim 1, characterized in that Before sending the second configuration information of the second TRP cluster to the terminal device, the method further includes: Send third configuration information and a reference signal to the terminal device, where the third configuration information is used by the terminal device to measure the reference signal to obtain a channel measurement result.

6. The method according to claim 5, characterized in that The method further comprises: Determine or update the second TRP cluster used for data transmission by the terminal device based on the channel measurement result.

7. The method according to claim 6, characterized in that The method further comprises: Receive the channel measurement result sent by the terminal device.

8. The method according to any one of claims 1 to 7, characterized in that The second configuration information includes at least one of the following: TRP cluster ID; Frequency; bandwidth; Time domain resource location; Reference signal resource configuration; Measurement result reporting configuration; Beam information; Beam index.

9. A network communication method, applied to a terminal device, characterized in that: The method comprises: Receiving first configuration information of at least one first transmission reception point TRP cluster sent by a network device; In response to the terminal device being in an idle state or an inactive state, selecting a resident TRP cluster for initial access from the at least one first TRP cluster according to the first configuration information, and establishing a radio resource control RRC connection with the network device using the resident TRP cluster; In response to the terminal device completing initial access, receiving second configuration information of a second TRP cluster sent by the network device in a connected state; Access the second TRP cluster according to the second configuration information for data transmission.

10. The method according to claim 9, characterized in that The method further comprises: The search frequency point position at the time of initial access is determined by protocol agreement, and the search frequency point position is used to receive synchronization signals and system messages to complete downlink synchronization.

11. The method according to claim 10, characterized in that The first configuration information includes configuration parameters, and the first configuration information of at least one first transmission reception point TRP cluster sent by the receiving network device includes: Configuration parameters periodically sent by the network device through broadcast signaling are received at the search frequency point, where the configuration parameters include at least one of a time synchronization parameter, a frequency synchronization parameter, and a system message.

12. The method according to claim 9, characterized in that The establishing a radio resource control RRC connection with the network device using the resident TRP cluster includes: The resident TRP cluster is used to send a random access request to the network device, so that the network device responds to the random access request and establishes a wireless resource control RRC connection with the terminal device.

13. The method according to claim 9, characterized in that The method further comprises: receiving third configuration information and a reference signal sent by the network device; The reference signal is measured according to the third configuration information to obtain a channel measurement result.

14. The method according to claim 13, characterized in that The method further comprises: The channel measurement result is sent to the network device, and the channel measurement result is used by the network device to determine or update a second TRP cluster used for data transmission by the terminal device.

15. The method according to any one of claims 9 to 14, characterized in that The second configuration information includes at least one of the following: TRP cluster ID; Frequency; bandwidth; Time domain resource location; Reference signal resource configuration; Measurement result reporting configuration; Beam information; Beam index.

16. A network communication device, applied to a network device, characterized in that: The device comprises: A sending module, configured to send first configuration information of at least one first transmission reception point TRP cluster to a terminal device, wherein the first configuration information is used to select a resident TRP cluster for initial access in the at least one first TRP cluster when the terminal device is in an idle state or an inactive state; a processing module, configured to update the radio resource control (RRC) state of the terminal device to a connected state in response to the terminal device completing initial access; and The sending module is also used to send second configuration information of the second TRP cluster to the terminal device, and the second configuration information is used for the terminal device to access the second TRP cluster in a connected state for data transmission.

17. A network communication device, applied to a terminal device, characterized in that: The device comprises: A receiving module, configured to receive first configuration information of at least one first transmission reception point TRP cluster sent by a network device; a processing module, configured to select, in response to the terminal device being in an idle state or an inactive state, a resident TRP cluster for initial access from the at least one first TRP cluster according to the first configuration information, and establish a radio resource control RRC connection with the network device using the resident TRP cluster; The receiving module is further configured to receive second configuration information of a second TRP cluster sent by the network device in response to the terminal device completing initial access; The processing module is also used to access the second TRP cluster for data transmission according to the second configuration information.

18. A communication device, wherein: include: Transceiver; Memory; A processor is connected to the transceiver and the memory, respectively, and is configured to control the wireless signal reception and transmission of the transceiver by executing computer executable instructions on the memory, and can implement any one of the methods of claims 1-15.

19. A computer storage medium, wherein: The computer storage medium stores computer executable instructions; after the computer executable instructions are executed by the processor, the method described in any one of claims 1 to 15 can be implemented.

20. A communication system, comprising a network device and a terminal device, characterized in that: The network device is configured to perform the method according to any one of claims 1 to 8; The terminal device is configured to execute the method according to any one of claims 9 to 15.

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