Cell random access method and system based on full decoupling access network, terminal and storage medium
By using flexible cell and carrier configuration in a fully decoupled access network, the problem of limited cell carrier configuration in existing technologies is solved, enabling efficient fulfillment of user communication needs and improving resource utilization and access efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- PENG CHENG LAB
- Filing Date
- 2026-02-05
- Publication Date
- 2026-05-12
AI Technical Summary
Existing technologies suffer from limited cell carrier configuration, resulting in low resource utilization, difficulty in accessing weak network environments, and an inability to meet user communication needs.
It adopts a fully decoupled access network approach, which enables flexible configuration of uplink and downlink carriers by flexibly configuring independent control cells, uplink user cells and downlink user cells. It supports various forms of carrier or cell coordination methods for communication interaction between the target configured cell and user equipment.
It improves the efficiency and accuracy of random access in the community, enhances resource utilization, and solves the problem of access difficulties in weak network environments.
Smart Images
Figure CN122028142A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of communication technology, and in particular to a cell random access method, system, terminal, and computer-readable storage medium based on a fully decoupled access network. Background Technology
[0002] Currently, in the 5G standard of 3GPP (the 3rd Generation Partnership Project, an international standards organization responsible for developing and maintaining mobile communication technology specifications and technical reports including 3G, 4G, and 5G), the carrier in TDD cells (Time Division Duplex wireless communication cells) is fixed, while the carrier configuration in FDD cells (Frequency Division Duplex) usually appears in pairs, i.e., an uplink carrier and a downlink carrier combined. Although the SUL (Supplementary Uplink) design can add supplementary carriers, the supplementary form and the selectable carriers are also fixed, which is not flexible. Furthermore, the current carrier aggregation design also has many limitations, such as high requirements for UE (terminal) hardware and complex cell activation and deactivation.
[0003] In summary, due to the limited cell carrier configuration in existing technologies, resource utilization is low during cell access, access is difficult in weak network environments, and user communication needs cannot be met.
[0004] Therefore, existing technologies still need to be improved and developed. Summary of the Invention
[0005] The main objective of this invention is to provide a cell random access method, system, terminal, and computer-readable storage medium based on a fully decoupled access network. This invention aims to solve the problems in the prior art where limited cell carrier configuration leads to low resource utilization during cell access, difficulty in accessing under weak network conditions, and inability to meet user communication needs.
[0006] To achieve the above objectives, the present invention provides a cell random access method based on a fully decoupled access network, the cell random access method based on a fully decoupled access network comprising the following steps: Determine the fully decoupled access network and target configuration requirements, and configure the cells of the fully decoupled access network according to the target configuration requirements to obtain the target configuration cells; Carrier configuration is performed on the target cell to obtain the carrier configuration information; The target user equipment is identified, and message broadcasting, uplink signaling reception, and downlink signaling reply processing are performed on the target user equipment according to the carrier configuration to complete the communication interaction between the target configured cell and the target user equipment.
[0007] Optionally, the cell random access method based on a fully decoupled access network, wherein determining the fully decoupled access network and target configuration requirements, and configuring the fully decoupled access network according to the target configuration requirements to obtain the target configured cell, specifically includes: Determine the target configuration requirements, which include communication system requirements, core network requirements, and application layer requirements; A fully decoupled access network is determined, and cell configuration is performed on the fully decoupled access network according to the target configuration requirements to obtain the target configuration cell; The target configuration cell includes a combined cell, a control supplement cell, an uplink supplement cell, and a downlink supplement cell; The combined cell consists of a control cell, an uplink user cell, and a downlink user cell; The supplementary control cell consists of the control cell and ordinary cells; The downlink supplementary cell consists of the ordinary cell and the downlink user cell; The uplink supplementary cell consists of the ordinary cell and the uplink user cell.
[0008] Optionally, the cell random access method based on a fully decoupled access network, wherein the carrier configuration of the target configured cell to obtain the carrier configuration information specifically includes: Configure uplink and downlink carriers for the control cell in the target configuration cell, and configure the number of uplink and downlink carriers; Configure the uplink carrier for the uplink user cell, and configure the downlink carrier for the downlink user cell; When multiple carriers are configured in the control cell, the uplink user cell, and the downlink user cell, the multiple carriers are identified and numbered to obtain the carrier configuration information.
[0009] Optionally, the cell random access method based on a fully decoupled access network, wherein determining the target user equipment, and performing message broadcasting processing, uplink signaling reception processing, and downlink signaling reply processing on the target user equipment according to the carrier configuration, to complete the communication interaction between the target configured cell and the target user equipment, specifically includes: If the target user equipment is determined based on the carrier configuration information, and the control cell is determined to be the first carrier configuration information, then the communication interaction between the target configuration cell and the target user equipment is performed based on the first carrier configuration information. If the control cell is determined to be the second carrier configuration information based on the carrier configuration information, then the communication interaction between the target configuration cell and the target user equipment is performed according to the second carrier configuration information. Alternatively, based on the carrier configuration, an idle user cell in the target configuration cell can be determined, and communication interaction between the idle user cell and the target user equipment can be performed.
[0010] Optionally, the cell random access method based on a fully decoupled access network, wherein determining the target user equipment, if the control cell is determined to be the first carrier configuration information based on the carrier configuration information, and then performing communication interaction between the target configuration cell and the target user equipment based on the first carrier configuration information, specifically includes: Determine the target user equipment and obtain the first carrier configuration information of the control cell based on the carrier configuration information; If the first carrier configuration information consists of multiple uplink carriers and only one downlink carrier, then the first configuration information of the multiple uplink carriers is obtained, and the first configuration information is broadcast through the downlink carrier; When the target user equipment receives the first configuration information via broadcast, it determines the target uplink carrier among the multiple uplink carriers based on the first configuration information. The target signaling of the target user equipment is acquired, and the target signaling is sent to the control cell via the target uplink carrier, thereby completing the communication interaction between the control cell and the target user equipment.
[0011] Optionally, the cell random access method based on a fully decoupled access network, wherein if the control cell is determined to be the second carrier configuration information based on the carrier configuration information, then the communication interaction between the target configuration cell and the target user equipment is performed according to the second carrier configuration information, specifically includes: The second carrier configuration information of the control cell is obtained according to the carrier configuration information. If the second carrier configuration information consists of multiple downlink carriers and only one uplink carrier, then the anchor carrier among the multiple downlink carriers is determined. Obtain the second configuration information of the carriers other than the anchor carrier, and broadcast the second configuration information through the anchor carrier; When the target user equipment receives the second configuration information via broadcast, it acquires the target signaling of the target user equipment and sends the target signaling to the control cell through a single uplink carrier, thus completing the communication interaction between the control cell and the target user equipment.
[0012] Optionally, the cell random access method based on a fully decoupled access network, wherein determining the idle user cells in the target configuration cells according to the carrier configuration and performing communication interaction between the idle user cells and the target user equipment specifically includes: When the target user equipment receives the third configuration information sent by the control cell, it determines the idle user cells in the control cell based on the third configuration information. The idle user cell replies to the target user equipment to complete the communication interaction between the idle user cell and the target user equipment.
[0013] Furthermore, to achieve the above objectives, the present invention also provides a cell random access system based on a fully decoupled access network, wherein the cell random access system based on a fully decoupled access network includes: The cell configuration module is used to determine the fully decoupled access network and the target configuration requirements, and to perform cell configuration on the fully decoupled access network according to the target configuration requirements to obtain the target configured cell; The carrier configuration module is used to configure the carrier of the target configuration cell and obtain the carrier configuration information. The communication interaction module is used to determine the target user equipment and perform message broadcasting, uplink signaling reception, and downlink signaling reply processing on the target user equipment according to the carrier configuration, so as to complete the communication interaction between the target configured cell and the target user equipment.
[0014] Furthermore, to achieve the above objectives, the present invention also provides a terminal, wherein the terminal includes: a memory, a processor, and a cell random access program based on a fully decoupled access network stored in the memory and executable on the processor, wherein when the cell random access program based on a fully decoupled access network is executed by the processor, it implements the steps of the cell random access method based on a fully decoupled access network as described above.
[0015] Furthermore, to achieve the above objectives, the present invention also provides a computer-readable storage medium, wherein the computer-readable storage medium stores a cell random access program based on a fully decoupled access network, and the cell random access program based on a fully decoupled access network, when executed by a processor, implements the steps of the cell random access method based on a fully decoupled access network as described above.
[0016] In this invention, a fully decoupled access network and target configuration requirements are determined. Based on these requirements, cell configuration is performed on the fully decoupled access network to obtain a target configured cell. Carrier configuration is then performed on the target configured cell to obtain carrier configuration information. A target user equipment (User Equipment) is determined, and based on the carrier configuration information, message broadcasting, uplink signaling reception, and downlink signaling reply processing are performed on the target User Equipment to complete the communication interaction between the target configured cell and the target User Equipment. This invention, by configuring cells and carriers in the fully decoupled access network, enables the deployment of independent control cells and user uplink and downlink cells based on flexible uplink and downlink carrier configurations. This allows for the implementation of various carrier or cell configuration and coordination methods, effectively improving the efficiency and accuracy of random cell access. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the random access method for cells in existing technologies; Figure 2 This is a schematic diagram of RRC connection establishment in the prior art; Figure 3 This is a flowchart of a preferred embodiment of the cell random access method based on a fully decoupled access network of the present invention; Figure 4 This is a schematic diagram of the cell configuration method of a fully decoupled access network, which is a preferred embodiment of the cell random access method based on a fully decoupled access network of the present invention. Figure 5 This is a schematic diagram of the fully decoupled access network carrier configuration method, which is a preferred embodiment of the cell random access method based on the fully decoupled access network of the present invention. Figure 6 This is a schematic diagram of the initial access process of the fully decoupled access network - multi-carrier combination control cell, which is a preferred embodiment of the random access method for cells based on a fully decoupled access network according to the present invention. Figure 7 This is a schematic diagram of the initial access process of the fully decoupled access network - multi-carrier system message broadcast, which is a preferred embodiment of the random access method for cells based on the fully decoupled access network of the present invention. Figure 8 This is a schematic diagram of the initial access process of the fully decoupled access network and the multi-carrier combination control cell, which is a preferred embodiment of the random access method for cells based on a fully decoupled access network of the present invention. Figure 9 This is a schematic diagram of the cell configuration method of a fully decoupled access network, which is a preferred embodiment of the cell random access method based on a fully decoupled access network of the present invention. Figure 10 This is a schematic diagram of the cell configuration method of a fully decoupled access network, which is a preferred embodiment of the cell random access method based on a fully decoupled access network of the present invention. Figure 11This is a structural diagram of a preferred embodiment of the cell random access system based on a fully decoupled access network of the present invention; Figure 12 This is a structural diagram of a preferred embodiment of the terminal of the present invention. Detailed Implementation
[0018] To make the objectives, technical solutions, and advantages of this invention clearer and more explicit, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
[0019] Currently, in the 5G standard of 3GPP (3GPP is an international standards organization responsible for developing and maintaining mobile communication technology specifications and technical reports including 3G, 4G and 5G), the carrier in TDD cells (TDD cells refer to wireless communication cells using TDD (Time Division Duplex) technology, a type of full-duplex communication technology used in mobile communication systems) is fixed. In FDD cells (Frequency Division Duplex), the carrier configuration (carrier configuration refers to the process of setting and adjusting the parameters of the carrier in a communication system, including carrier frequency, bandwidth, etc., with the aim of achieving effective information transmission and optimizing communication performance) usually appears in pairs, that is, an uplink carrier and a downlink carrier combined. Although the design of SUL (Supplementary Uplink) can add supplementary carriers, the form of supplementation and the selectable carriers are also fixed and not flexible. However, current carrier aggregation designs also have many limitations, such as high hardware requirements for UEs (terminals, i.e., the target user equipment in this invention), and complex cell activation and deactivation processes.
[0020] In a fully decoupled access network (a type of access network architecture characterized by not restricting the type and number of UNI (User-Network Interface) and SNI (Service Node Interface), not interpreting signaling, and functioning as a transport network independent of services and applications, primarily used for cross-connection, multiplexing, and transmission functions), cells can be flexibly configured with carriers to form separate control cells, user downlink cells, and user uplink cells, and further, downlink base stations, uplink base stations, and control base stations can be deployed separately. In summary, existing technologies suffer from limited cell carrier configuration, resulting in low resource utilization during cell access, difficulties in accessing weak network environments, and an inability to meet user communication needs.
[0021] like Figure 1 and Figure 2 As shown, Figure 1 This refers to the random access method for cells in existing technologies. Figure 1 (a) in the text is a CBRA (Contention Based Random Access) with a four-step RA type. Figure 1 (b) in the example is a CBRA with a two-step RA type. Figure 1 (c) in the text refers to CFRA (Contended Random Access) with a four-step RA type. Figure 1 In the example, (d) represents a CFRA with a two-step RA type. Figure 2 (a) shows the process of successfully establishing an RRC connection. Figure 2 (b) in the diagram represents the process of an RRC connection establishment failure.
[0022] To address the aforementioned issues, this invention proposes a flexible configuration method based on uplink and downlink carriers in a fully decoupled RAN, which allows for the deployment of independent control cells and user uplink and downlink cells. This enables various carrier or cell configuration and coordination methods, allowing for corresponding configuration methods and random access methods for different carriers or cells.
[0023] The preferred embodiment of the cell random access method based on a fully decoupled access network described in this invention, such as... Figure 3 As shown, the cell random access method based on a fully decoupled access network includes the following steps: Step S10: Determine the fully decoupled access network and target configuration requirements, and configure the fully decoupled access network according to the target configuration requirements to obtain the target configuration cell.
[0024] The cell functions in a fully decoupled access network are as follows: In a fully decoupled RAN, cell carriers can be configured independently as needed, and independent control cells, uplink user cells, and downlink user cells can be configured as required by the communication system, core network, and application layer. These include: 1. Control Plane-Cell (C-Cell): Configurable as an always-on cell, responsible for control information transmission, including but not limited to: a) System message broadcasting: Sending the Primary Information Block (MIB) and System Information Blocks (SIB1 and SIBx) to inform the UE of network configuration and PLMN information (Public Land Mobile Network), etc. b) Network-wide synchronization and paging: Sending the Primary Synchronization Signal (PSS) or Secondary Synchronization Signal (SSS), and Paging messages (waking up idle UEs). c) RRC signaling management: Responsible for RRC connection establishment, reconfiguration, suspension, and release; bearing SRBs (Signaling Radio Bearers, a special type of radio bearer (RB) used only for transmitting RRC (Radio Resource Control) and NAS (Non-Access Stratum) messages). d) Mobility management: Processing measurement reports, making handover decisions, and managing data path changes for the UE between different U-Cells. e. Initial Access: Such as processing the UE's Random Access Request (PRACH) and allocating the initial C-RNTI. f. NAS Signaling Forwarding: Such as acting as a conduit between the UE and the core network (AMF), transmitting non-access stratum signaling such as authentication and registration. g. Control Plane Anchor Point: When the UE activates a high-frequency data cell, the C-Cell still serves as the primary anchor point to maintain connection stability. h. Small Data Packet Transmission: Such as small data packets in applications like IoT, which can transmit user plane data packets as needed.
[0025] 2. Uplink User Cell (U-Cell-UL): This can be deployed co-located with or independently of the C-Cell and is primarily responsible for uplink data reception. Specific functions include, but are not limited to: a) High-speed uplink user data (e.g., PUSCH): Receiving large files, video streams, and other service data uploaded by users. b) Uplink Sounding Reference Signal (e.g., SRS): Measuring uplink channel quality and used for reciprocal beamforming or uplink scheduling in TDD systems. c) Uplink Control Information (UCI) Bearer (optional): Receiving feedback closely related to data transmission, such as high-frequency data acknowledgments (ACK or NACK). d) Scheduling Request (SR) Response: Receiving "data to transmit" request signals from the UE. e) Uplink Power Control: Measuring the UE's receive power and adjusting the UE's transmit power in a closed-loop manner to minimize interference. f) Control signaling reception and forwarding: Control signaling bearer resources can be configured as needed based on the actual configuration environment.
[0026] 3. Downlink User Cell-DL (U-Cell-DL) can be enabled on demand. It is responsible for downlink data transmission, specifically including but not limited to: a) High-speed downlink user data (e.g., PDSCH): transmitting data downloaded by the user. b) Channel State Information Reference Signal (e.g., CSI-RS): transmitting a dedicated reference signal for the UE to measure downlink channel quality (CQI, PMI, or RI). c) Demodulation Reference Signal (DMRS): accompanying data transmission to assist the UE in data demodulation. d) Beam management and refinement: transmitting beam scanning signals and adjusting the transmit beam direction based on UE feedback to achieve high-gain transmission. e) Phase Tracking Reference Signal (PTRS): used to resist phase noise in high-frequency millimeter-wave scenarios. f) Sleep and wake-up mechanism: shutting down the power amplifier when there is no data transmission, retaining only a very low duty cycle listening interface or being fully woken up by the C-Cell. g) Control signaling reception and forwarding: control signaling bearer resources can also be configured as needed according to the actual configuration environment.
[0027] Specifically, the target configuration requirements are determined, including communication system requirements, core network requirements, and application layer requirements; a fully decoupled access network is determined, and cell configuration is performed on the fully decoupled access network according to the target configuration requirements to obtain target configuration cells; wherein, the target configuration cells include combined cells, control supplementary cells, uplink supplementary cells, and downlink supplementary cells; the combined cell consists of a control cell, an uplink user cell, and a downlink user cell; the control supplementary cell consists of the control cell and a normal cell; the downlink supplementary cell consists of the normal cell and the downlink user cell; and the uplink supplementary cell consists of the normal cell and the uplink user cell.
[0028] The cell coordination method in a fully decoupled access network is as follows: In a fully decoupled RAN, cells can be divided into control cells and user cells. User cells can be further subdivided into uplink user cells and downlink user cells. The specific configuration can be tailored to user needs (i.e., the target configuration requirements in this invention), and cell combinations from a fully decoupled RAN can be used, such as... Figure 4 As shown in (a) above. It can also be configured for traditional cell types, such as standalone supplementary control cells (e.g., Figure 4 As shown in (b)), uplink user cells (such as...) Figure 4 (as shown in (c)) and downlink user cells (such as Figure 4 (as shown in (d)).
[0029] Step S20: Configure the carrier for the target cell to obtain the carrier configuration information.
[0030] After configuring the cells in the fully decoupled access network, it is necessary to configure the carriers of the configured cells, including the carrier configuration of the control cell, uplink user cells, and downlink user cells.
[0031] Specifically, uplink and downlink carriers are configured for the control cell in the target configuration cell, and the number of uplink and downlink carriers is configured; the uplink carrier is configured for the uplink user cell, and the downlink carrier is configured for the downlink user cell; when multiple carriers are configured in the control cell, the uplink user cell, and the downlink user cell, the multiple carriers are identified and numbered to obtain the carrier configuration information.
[0032] The carrier configuration method in a fully decoupled access network is as follows: In a fully decoupled access network, uplink and downlink carriers can be flexibly configured on demand, such as... Figure 5 As shown, the control cell can be configured with paired uplink and downlink carriers or the number of uplink and downlink carriers can be configured individually as needed. User cells can flexibly configure the number of uplink or downlink carriers according to actual needs. For example, in configuration mode 1, both the uplink and downlink user cells are configured with multiple carriers, while in configuration mode 2, a single carrier is configured.
[0033] Furthermore, in a fully decoupled access network cell, if multiple carriers are configured, a carrier identification number (Carrier ID) will be added to each carrier. The Carrier ID is recorded in the cell ID, SSB, MIB, and SIB1 and sent to the UE via signaling messages. This allows the UE to obtain the specific carrier information of the current cell (i.e., the carrier configuration in this invention) and to distinguish between different carriers. At the same time, the measurement report fed back by the UE will also include Carrier ID information to distinguish between different carriers.
[0034] Step S30: Determine the target user equipment, and perform message broadcasting, uplink signaling reception, and downlink signaling reply processing on the target user equipment according to the carrier configuration, so as to complete the communication interaction between the target configured cell and the target user equipment.
[0035] After configuring the cell and carrier of the fully decoupled access network, this invention can establish a communication connection and information exchange with the target user equipment according to the configuration of each cell.
[0036] Specifically, a target user equipment is identified, and the first carrier configuration information of the control cell is obtained based on the carrier configuration information. If the first carrier configuration information consists of multiple uplink carriers and only one downlink carrier, the first configuration information of the multiple uplink carriers is obtained, and the first configuration information is broadcast through the downlink carrier. When the target user equipment receives the first configuration information through broadcast, the target uplink carrier among the multiple uplink carriers is determined based on the first configuration information. The target signaling of the target user equipment is obtained, and the target signaling is sent to the control cell through the target uplink carrier, thus completing the communication interaction between the control cell and the target user equipment.
[0037] The initial access procedure for a fully decoupled access network and the specific implementation process of multi-carrier combination control cells are as follows: In Decoupled-RAN (i.e., the fully decoupled access network in this invention), the carriers in the control cell (C-Cell) can be configured as needed. When multiple uplink carriers are configured in the C-Cell, the UE can select a suitable carrier for signaling transmission during the random access procedure. For example... Figure 6 As shown, when the C-Cell (i.e., the control cell in this invention) broadcasts system messages on the downlink carrier, it may include configuration information for multiple uplink carriers (i.e., the first carrier configuration information in this invention, which consists of multiple uplink carriers and only one downlink carrier). The UE can select a suitable UL carrier for uplink signaling transmission as needed. Simultaneously, the base station can also estimate the situation and instruct the UE in the downlink signaling (e.g., Msg2) to send subsequent signaling carriers (e.g., instructing the UE to send Msg3 in UL-CC3).
[0038] The meaning of MSG in Decoupled-RAN is supplemented as follows: In the field of wireless communication, especially in the RACH (Random Access Channel) process, MSG usually refers to the abbreviation of Message. In the RACH process, MSG usually refers to four key messages: MSG1, MSG2, MSG3 and MSG4.
[0039] In wireless communication, the RACH procedure is the first step in establishing a connection between the UE (User Equipment) and the network. This procedure allows the UE to send a request to the network without pre-allocated resources. RACH procedures can be divided into two types: contention-based RACH and non-contention-based RACH. Contention-based RACH consists of four message steps: MSG1, MSG2, MSG3, and MSG4.
[0040] MSG1: This is the preamble sent by the UE to request network access. The selection of the preamble is random, which may cause multiple UEs to select the same preamble, thus triggering a contention.
[0041] MSG2: This is the network's response to MSG1, containing a temporary C-RNTI (Cell-Radio Network Temporary Identifier) and an uplink grant (UL Grant), instructing the UE on how to send MSG3.
[0042] MSG3: The actual data or connection request sent by the UE, which includes the UE's identity information and other necessary data.
[0043] MSG4: The network's final response to MSG3, confirming the UE's access and potentially assigning a permanent C-RNTI.
[0044] In summary, in Decoupled-RAN, MSG primarily refers to messages during the RACH process, namely MSG1, MSG2, MSG3, and MSG4. These messages are transmitted between the UE and the network to establish the initial connection. In the Decoupled-RAN architecture, the processing of these messages may involve cooperation between the CU and DU to ensure efficient communication and resource management.
[0045] Further, based on the carrier configuration, the second carrier configuration information of the control cell is obtained. If the second carrier configuration information consists of multiple downlink carriers and only one uplink carrier, then the anchor carrier among the multiple downlink carriers is determined. The second configuration information of the remaining carriers other than the anchor carrier is obtained, and the second configuration information is broadcast through the anchor carrier. When the target user equipment receives the second configuration information through broadcast, the target signaling of the target user equipment is obtained, and the target signaling is sent to the control cell through the only uplink carrier, thus completing the communication interaction between the control cell and the target user equipment.
[0046] like Figure 7 As shown, when C-Cell is configured with multiple downlink carriers (i.e., the second carrier configuration information in this invention, which consists of multiple downlink carriers and only one uplink carrier), one of the carriers can be used as the anchor carrier to broadcast system information, that is, to broadcast the information of other carriers in the cell together. Alternatively, two downlink carriers can be used to broadcast together, each containing its own carrier identifier (Carrier ID), and can provide advance indication of the carrier to receive subsequent signaling, or require the UE to listen to multiple carriers simultaneously.
[0047] like Figure 8 As shown, after the UE obtains the system message of the cell, it can listen to specific downlink signaling messages according to the instructions of the base station. The base station can choose to send downlink signaling on multiple carriers at the same time or select one carrier to send, depending on the situation.
[0048] Furthermore, when the target user equipment receives the third configuration information sent by the control cell, it determines the idle user cell in the control cell according to the third configuration information; and replies to the target user equipment through the idle user cell to complete the communication interaction between the idle user cell and the target user equipment.
[0049] The specific implementation process of the initial access procedure and user plane base station assisted coordination for the fully decoupled access network is as follows: In Decoupled-RAN, system messages can be broadcast uniformly by the control cell (C-Cell). When user plane cells have idle resources (i.e., the third configuration information in this invention), resources can be temporarily configured as needed based on the UE's location or specific requirements to supplement control signaling, such as... Figure 9 As shown, the UE receives a system message broadcast by C-Cell, which contains the configuration information of U-Cell 1 and U-Cell 2, and initiates a random access procedure. When C-Cell determines that U-Cell 1 (i.e., it determines that U-Cell 1 is an idle user cell) can reply with Msg2, then U-Cell 1 will reply with Msg2. Similarly, Msg4 can also be replied with by different cells such as U-Cell 2 (i.e., it determines that U-Cell 2 is an idle user cell).
[0050] In addition, such as Figure 10 As shown, U-Cell can also temporarily configure control plane resources as needed based on the UE's historical state through C-Cell system message configuration. This is used to receive UE uplink data. For example, it can notify the UE to send Msg1 using resources in user uplink cell 1 U-Cell-UL 1, and still listen for Msg2 using resources in C-Cell, and configure Msg3 resources in Msg2. Or, it can notify the UE to send Msg3 using resources in user uplink cell 2 U-Cell-UL 2, and still listen for Msg4 using resources in C-Cell.
[0051] In summary, this invention proposes a flexible configuration method based on uplink and downlink carriers in a fully decoupled RAN, which allows for the deployment of independent control cells and user uplink and downlink cells, thereby enabling various carrier or cell configuration and coordination methods. It can set corresponding configuration methods and random access methods for different carriers or cells.
[0052] Furthermore, such as Figure 11 As shown, based on the above-described cell random access method based on a fully decoupled access network, the present invention also provides a cell random access system based on a fully decoupled access network, wherein the cell random access system based on a fully decoupled access network includes: The cell configuration module 51 is used to determine the fully decoupled access network and the target configuration requirements, and to perform cell configuration on the fully decoupled access network according to the target configuration requirements to obtain the target configured cell; Carrier configuration module 52 is used to configure the carrier of the target configuration cell and obtain the carrier configuration information; The communication interaction module 53 is used to determine the target user equipment and perform message broadcasting, uplink signaling reception, and downlink signaling reply processing on the target user equipment according to the carrier configuration, so as to complete the communication interaction between the target configured cell and the target user equipment.
[0053] Furthermore, such as Figure 12 As shown, based on the above-mentioned random access method and system for cells based on a fully decoupled access network, the present invention also provides a terminal, which includes a processor 10, a memory 20 and a display 30. Figure 12 Only some of the terminal components are shown; however, it should be understood that it is not required to implement all of the components shown, and more or fewer components may be implemented instead.
[0054] In some embodiments, the memory 20 may be an internal storage unit of the terminal, such as a hard disk or memory. In other embodiments, the memory 20 may be an external storage device of the terminal, such as a plug-in hard disk, smart media card (SMC), secure digital card (SD), flash card, etc. Further, the memory 20 may include both internal and external storage devices. The memory 20 is used to store application software and various types of data installed on the terminal, such as the program code installed on the terminal. The memory 20 can also be used to temporarily store data that has been output or will be output. In one embodiment, the memory 20 stores a cell random access procedure 40 based on a fully decoupled access network, which can be executed by the processor 10 to implement the cell random access method based on a fully decoupled access network in this application.
[0055] In some embodiments, the processor 10 may be a central processing unit (CPU), a microprocessor, or other data processing chip, used to run program code stored in the memory 20 or process data, such as executing the cell random access method based on a fully decoupled access network.
[0056] In some embodiments, the display 30 may be an LED display, a liquid crystal display, a touch-sensitive liquid crystal display, or an OLED (Organic Light-Emitting Diode) touchscreen. The display 30 is used to display information on the terminal and to display a visual user interface.
[0057] In one embodiment, when the processor 10 executes the cell random access procedure 40 based on the fully decoupled access network in the memory 20, the following steps are performed: Determine the fully decoupled access network and target configuration requirements, and configure the cells of the fully decoupled access network according to the target configuration requirements to obtain the target configuration cells; Carrier configuration is performed on the target cell to obtain the carrier configuration information; The target user equipment is identified, and message broadcasting, uplink signaling reception, and downlink signaling reply processing are performed on the target user equipment according to the carrier configuration to complete the communication interaction between the target configured cell and the target user equipment.
[0058] Specifically, determining the fully decoupled access network and target configuration requirements, and configuring cells in the fully decoupled access network according to the target configuration requirements to obtain the target configured cells, includes: Determine the target configuration requirements, which include communication system requirements, core network requirements, and application layer requirements; A fully decoupled access network is determined, and cell configuration is performed on the fully decoupled access network according to the target configuration requirements to obtain the target configuration cell; The target configuration cell includes a combined cell, a control supplement cell, an uplink supplement cell, and a downlink supplement cell; The combined cell consists of a control cell, an uplink user cell, and a downlink user cell; The supplementary control cell consists of the control cell and ordinary cells; The downlink supplementary cell consists of the ordinary cell and the downlink user cell; The uplink supplementary cell consists of the ordinary cell and the uplink user cell.
[0059] Specifically, the process of configuring carriers for the target cell to obtain carrier configuration details includes: Configure uplink and downlink carriers for the control cell in the target configuration cell, and configure the number of uplink and downlink carriers; Configure the uplink carrier for the uplink user cell, and configure the downlink carrier for the downlink user cell; When multiple carriers are configured in the control cell, the uplink user cell, and the downlink user cell, the multiple carriers are identified and numbered to obtain the carrier configuration information.
[0060] The step of determining the target user equipment includes, according to the carrier configuration, performing message broadcasting processing, uplink signaling reception processing, and downlink signaling reply processing on the target user equipment to complete the communication interaction between the target configured cell and the target user equipment, specifically including: If the target user equipment is determined based on the carrier configuration information, and the control cell is determined to be the first carrier configuration information, then the communication interaction between the target configuration cell and the target user equipment is performed based on the first carrier configuration information. If the control cell is determined to be the second carrier configuration information based on the carrier configuration information, then the communication interaction between the target configuration cell and the target user equipment is performed according to the second carrier configuration information. Alternatively, based on the carrier configuration, an idle user cell in the target configuration cell can be determined, and communication interaction between the idle user cell and the target user equipment can be performed.
[0061] Specifically, determining the target user equipment, if the control cell is determined to be the first carrier configuration information based on the carrier configuration information, and then performing communication interaction between the target configuration cell and the target user equipment based on the first carrier configuration information, includes: Determine the target user equipment and obtain the first carrier configuration information of the control cell based on the carrier configuration information; If the first carrier configuration information consists of multiple uplink carriers and only one downlink carrier, then the first configuration information of the multiple uplink carriers is obtained, and the first configuration information is broadcast through the downlink carrier; When the target user equipment receives the first configuration information via broadcast, it determines the target uplink carrier among the multiple uplink carriers based on the first configuration information. The target signaling of the target user equipment is acquired, and the target signaling is sent to the control cell via the target uplink carrier, thereby completing the communication interaction between the control cell and the target user equipment.
[0062] Wherein, if the control cell is determined to be the second carrier configuration information based on the carrier configuration information, then the communication interaction between the target configuration cell and the target user equipment is performed according to the second carrier configuration information, specifically including: The second carrier configuration information of the control cell is obtained according to the carrier configuration information. If the second carrier configuration information consists of multiple downlink carriers and only one uplink carrier, then the anchor carrier among the multiple downlink carriers is determined. Obtain the second configuration information of the carriers other than the anchor carrier, and broadcast the second configuration information through the anchor carrier; When the target user equipment receives the second configuration information via broadcast, it acquires the target signaling of the target user equipment and sends the target signaling to the control cell through a single uplink carrier, thus completing the communication interaction between the control cell and the target user equipment.
[0063] The step of determining the idle user cells in the target configuration cells based on the carrier configuration and performing communication interaction between the idle user cells and the target user equipment specifically includes: When the target user equipment receives the third configuration information sent by the control cell, it determines the idle user cells in the control cell based on the third configuration information. The idle user cell replies to the target user equipment to complete the communication interaction between the idle user cell and the target user equipment.
[0064] The present invention also provides a computer-readable storage medium, wherein the computer-readable storage medium stores a cell random access program based on a fully decoupled access network, and the cell random access program based on a fully decoupled access network, when executed by a processor, implements the steps of the cell random access method based on a fully decoupled access network as described above.
[0065] In summary, this invention provides a cell random access method, system, terminal, and storage medium based on a fully decoupled access network. The method includes: determining a fully decoupled access network and target configuration requirements; configuring the fully decoupled access network according to the target configuration requirements to obtain a target configured cell; configuring the target configured cell for carriers to obtain carrier configuration information; determining a target user equipment (User Equipment); and performing message broadcasting, uplink signaling reception, and downlink signaling reply processing on the target User Equipment according to the carrier configuration information to complete the communication interaction between the target configured cell and the target User Equipment. This invention, by configuring cells and carriers in a fully decoupled access network, enables the deployment of independent control cells and user uplink and downlink cells based on flexible uplink and downlink carrier configurations, thereby achieving various carrier or cell configuration and coordination methods, effectively improving the efficiency and accuracy of cell random access.
[0066] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or terminal. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or terminal that includes that element.
[0067] Of course, those skilled in the art will understand that all or part of the processes in the above embodiments can be implemented by a computer program instructing related hardware (such as a processor, controller, etc.). The program can be stored in a computer-readable storage medium, and when executed, it can include the processes described in the above method embodiments. The computer-readable storage medium can be a memory, magnetic disk, optical disk, etc.
[0068] It should be understood that the application of the present invention is not limited to the examples above. Those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.
Claims
1. A cell random access method based on a fully decoupled access network, characterized in that, The cell random access method based on a fully decoupled access network includes: Determine the fully decoupled access network and target configuration requirements, and configure the cells of the fully decoupled access network according to the target configuration requirements to obtain the target configuration cells; Carrier configuration is performed on the target cell to obtain the carrier configuration information; The target user equipment is identified, and message broadcasting, uplink signaling reception, and downlink signaling reply processing are performed on the target user equipment according to the carrier configuration to complete the communication interaction between the target configured cell and the target user equipment.
2. The cell random access method based on a fully decoupled access network according to claim 1, characterized in that, The process of determining the fully decoupled access network and target configuration requirements, and configuring cells in the fully decoupled access network according to the target configuration requirements to obtain the target configuration cell, specifically includes: Determine the target configuration requirements, which include communication system requirements, core network requirements, and application layer requirements; A fully decoupled access network is determined, and cell configuration is performed on the fully decoupled access network according to the target configuration requirements to obtain the target configuration cell; The target configuration cell includes a combined cell, a control supplement cell, an uplink supplement cell, and a downlink supplement cell; The combined cell consists of a control cell, an uplink user cell, and a downlink user cell; The supplementary control cell consists of the control cell and ordinary cells; The downlink supplementary cell consists of the ordinary cell and the downlink user cell; The uplink supplementary cell consists of the ordinary cell and the uplink user cell.
3. The cell random access method based on a fully decoupled access network according to claim 2, characterized in that, The process of configuring carriers for the target cell to obtain carrier configuration details specifically includes: Configure uplink and downlink carriers for the control cell in the target configuration cell, and configure the number of uplink and downlink carriers; Configure the uplink carrier for the uplink user cell, and configure the downlink carrier for the downlink user cell; When multiple carriers are configured in the control cell, the uplink user cell, and the downlink user cell, the multiple carriers are identified and numbered to obtain the carrier configuration information.
4. The cell random access method based on a fully decoupled access network according to claim 3, characterized in that, The process of determining the target user equipment includes, according to the carrier configuration, performing message broadcasting, uplink signaling reception, and downlink signaling reply processing on the target user equipment to complete the communication interaction between the target configured cell and the target user equipment, specifically including: If the target user equipment is determined based on the carrier configuration information, and the control cell is determined to be the first carrier configuration information, then the communication interaction between the target configuration cell and the target user equipment is performed based on the first carrier configuration information. If the control cell is determined to be the second carrier configuration information based on the carrier configuration information, then the communication interaction between the target configuration cell and the target user equipment is performed according to the second carrier configuration information. Alternatively, based on the carrier configuration, an idle user cell in the target configuration cell can be determined, and communication interaction between the idle user cell and the target user equipment can be performed.
5. The cell random access method based on a fully decoupled access network according to claim 4, characterized in that, The step of determining the target user equipment, if the control cell is determined to be the first carrier configuration information based on the carrier configuration information, then the communication interaction between the target configuration cell and the target user equipment is performed based on the first carrier configuration information, specifically including: Determine the target user equipment and obtain the first carrier configuration information of the control cell based on the carrier configuration information; If the first carrier configuration information consists of multiple uplink carriers and only one downlink carrier, then the first configuration information of the multiple uplink carriers is obtained, and the first configuration information is broadcast through the downlink carrier; When the target user equipment receives the first configuration information via broadcast, it determines the target uplink carrier among the multiple uplink carriers based on the first configuration information. The target signaling of the target user equipment is acquired, and the target signaling is sent to the control cell via the target uplink carrier, thereby completing the communication interaction between the control cell and the target user equipment.
6. The cell random access method based on a fully decoupled access network according to claim 4, characterized in that, If the control cell is determined to be the second carrier configuration information based on the carrier configuration information, then the communication interaction between the target configuration cell and the target user equipment is performed according to the second carrier configuration information, specifically including: The second carrier configuration information of the control cell is obtained according to the carrier configuration information. If the second carrier configuration information consists of multiple downlink carriers and only one uplink carrier, then the anchor carrier among the multiple downlink carriers is determined. Obtain the second configuration information of the carriers other than the anchor carrier, and broadcast the second configuration information through the anchor carrier; When the target user equipment receives the second configuration information via broadcast, it acquires the target signaling of the target user equipment and sends the target signaling to the control cell through a single uplink carrier, thus completing the communication interaction between the control cell and the target user equipment.
7. The cell random access method based on a fully decoupled access network according to claim 4, characterized in that, The step of determining the idle user cells in the target configuration cells based on the carrier configuration and performing communication interaction between the idle user cells and the target user equipment specifically includes: When the target user equipment receives the third configuration information sent by the control cell, it determines the idle user cells in the control cell based on the third configuration information. The idle user cell replies to the target user equipment to complete the communication interaction between the idle user cell and the target user equipment.
8. A cell random access system based on a fully decoupled access network, characterized in that, The cell random access system based on the fully decoupled access network includes: The cell configuration module is used to determine the fully decoupled access network and the target configuration requirements, and to perform cell configuration on the fully decoupled access network according to the target configuration requirements to obtain the target configured cell; The carrier configuration module is used to configure the carrier of the target configuration cell and obtain the carrier configuration information. The communication interaction module is used to determine the target user equipment and perform message broadcasting, uplink signaling reception, and downlink signaling reply processing on the target user equipment according to the carrier configuration, so as to complete the communication interaction between the target configured cell and the target user equipment.
9. A terminal, characterized in that, The terminal includes: a memory, a processor, and a cell random access program based on a fully decoupled access network stored in the memory and executable on the processor. When the cell random access program based on a fully decoupled access network is executed by the processor, it implements the steps of the cell random access method based on a fully decoupled access network as described in any one of claims 1-7.
10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a cell random access procedure based on a fully decoupled access network, which, when executed by a processor, implements the steps of the cell random access method based on a fully decoupled access network as described in any one of claims 1-7.