A special terminal access method

Abstract

The present invention relates to the field of mobile communication technology, and in particular to an access method for a special terminal. The method comprises: presetting an exclusive tag for the special terminal by a mobile management entity; a base station identifying the preset identity of the special terminal based on the exclusive tag; directly returning agreed preset information in an access response message; and deploying air interface resources in advance, thereby greatly optimizing the time it takes for the terminal to access the base station and avoiding the problem of network congestion caused by excessive calculation of the base station when a large number of terminals access the network at the same time.

Description

Technical Field

[0001] The present invention relates to the field of mobile communication technology, and in particular to an access method for a special terminal. Background Art

[0002] With the rapid development of mobile internet technology, the demand for faster wireless communication network transmission speeds has become increasingly pronounced, and the volume of service data is also exploding. The development of 5G technology also presents the challenge of meeting ultra-reliable, low-latency communication (URLLC) requirements. In existing communication systems, a terminal requires at least nine signaling interactions to access a base station, i.e., transition from idle to connected state, resulting in a latency of approximately 80ms. If a large number of mobile terminals simultaneously access a base station—that is, if a large number of terminals initiate access requests to send uplink data within a short period of time—then significant signaling overhead will result, leading to signaling congestion. This can reduce system transmission speed and capacity, and in turn, impact network performance.

[0003] The access process of common terminals in traditional communication systems is as follows: Figure 1 As shown in the figure, the complete process of common terminal access is as follows:

[0004] Step 1: Upon powering on, the terminal scans for beacon frames sent by the base station, identifies the network, camps on the cell, and initiates a random access procedure. The terminal performs uplink synchronization adjustment in idle mode. During this process, the terminal first sends a preamble to the base station. The base station recognizes the request and estimates the time adjustment for the uplink synchronization of this particular terminal.

[0005] Step 2: After receiving the preamble information, the base station sends a random access response message to the terminal. The response message mainly includes a time adjustment value and an uplink authorization.

[0006] Step 3: After adjusting the uplink synchronization based on the received time adjustment value, the special terminal sends an RRC (Radio Resource Control) connection request message to the base station on the SRB0 bearer. This message mainly includes the terminal identification number and the requested establishment scenario.

[0007] Step 4: After receiving the request, the base station sends an RRC connection setup message to the terminal. After receiving the message, the terminal sends a request message to establish an RRC connection and NAS (Network Attached Storage) connection.

[0008] Step 5: The terminal sends an RRC connection setup complete message to the base station.

[0009] Step 6: After receiving the RRC connection setup completion message, the base station sends a NAS service request message to the mobility management entity MME (Mobility Management Entity) to obtain the context information of the terminal.

[0010] Step 7: After receiving the NAS service request message, the mobility management entity performs resource allocation calculation based on the context information of the terminal and sends this connection setting information to the base station.

[0011] Step 8: After receiving the connection setting information, the base station sends a security mode command message to the terminal to activate the terminal security mode and at the same time sends an RRC connection reconfiguration message to the terminal.

[0012] Step 9: The terminal sends a security mode completion message and an RRC connection reconfiguration message to the base station.

[0013] Step 10: At this point, the terminal completes the transition from idle mode to data transmission state.

[0014] Scenarios where a large number of terminals access the base station at the same time Figure 2 , such as geological data monitoring networks. Because a large number of terminals access the base station simultaneously in this scenario, the base station faces enormous pressure to identify user identities and allocate computing resources, which can easily lead to long delays and signaling congestion, resulting in a decrease in system transmission speed and capacity, and failing to meet the real-time data monitoring requirements of geological data monitoring networks.

[0015] The above process shows that common terminal access has the following shortcomings:

[0016] 1. Traditional communication systems need to calculate the corresponding resource allocation information independently when accessing, which easily causes long delays during the access process.

[0017] 2. The terminal needs to go through at least 9 signaling interactions to complete the access process to the base station, which results in a large signaling overhead.

[0018] 3. After receiving the RRC connection request message sent by the terminal, the base station needs to identify the user according to the terminal identifier carried in the connection request. This step will also cause a certain delay.

[0019] 4. Ordinary terminals exhibit random mobility, necessitating a mobility management entity for tracking and paging. However, in scenarios such as geological data monitoring, random terminal movement is not significant while the IoT device is operating, and any random movement is a sign of a non-operating state. In these scenarios, the terminal's operating state is to regularly collect and transmit data. This characteristic can be leveraged to further reduce latency by decentralizing device management functions.

[0020] Therefore, the present invention proposes a method for accessing special terminals. Unlike traditional terminal access procedures, during random access, the base station does not need to independently calculate resource allocation information such as access channels and time-frequency resource blocks based on the information carried in the terminal connection request and the corresponding algorithm, saving time. The base station can identify the user's identity based on the unique tag carried by the special terminal and determine whether it meets the preset special terminal identification requirements. If so, the base station can include the agreed preset information in the subsequent response message, completing the access and pre-scheduling negotiation process.

[0021] The greatest advantage of this invention over traditional access methods is that it eliminates the need for the base station to perform resource calculations based on terminal access requests. Based on the unique tag information carried by the special terminal, the base station can return pre-agreed information. This pre-agreed information primarily includes resource allocation information such as service time, allocated frequency resources, link quality confirmation conditions, and wake-up and sleep conditions. This approach significantly optimizes the time it takes for terminals to access the base station, avoiding network congestion caused by excessive base station calculations when a large number of terminals access the network simultaneously. Summary of the Invention

[0022] In order to optimize the time when the terminal accesses the base station and avoid the problem of network congestion caused by excessive calculation of the base station when a large number of terminals access the network at the same time, the present invention provides an access method for special terminals. According to the present invention, the exclusive tag information carried by the special terminal can return the pre-agreed preset information, eliminating the need for the base station to perform resource calculations based on the terminal request information; in this way, the time when the terminal accesses the base station can be greatly optimized, avoiding the problem of network congestion caused by excessive calculation of the base station when a large number of terminals access the network at the same time.

[0023] To achieve the above objectives, the present invention adopts the following technical solutions.

[0024] In an embodiment of the present invention, a method for accessing a special terminal is proposed, and the method includes the following steps:

[0025] 1) The mobility management entity (MME) sets a dedicated tag for the corresponding terminal as per the agreement, making it a special terminal, and sends the user identification rules and the corresponding agreed preset information to the corresponding base station in advance;

[0026] 2) The special terminal adds a pre-set exclusive tag to the connection request message sent to the base station;

[0027] 3) After receiving the connection request message, the base station identifies the user's identity based on the exclusive tag carried by the special terminal and returns a corresponding access response message to the special terminal, wherein the access response message carries the agreed preset information;

[0028] 4) After receiving the access response message, the special terminal replies with the agreed confirmation information to the base station, completes the access and pre-scheduling negotiation process according to the resource allocation message contained in the agreed preset information; and enters the data transmission state or the sleep state according to the wake-up or sleep conditions in the agreed preset information.

[0029] Furthermore, the dedicated tag is a unique terminal identifier set by the mobility management entity MME for the special terminal, and is used to identify each special terminal in the local area network.

[0030] Furthermore, the predetermined preset information includes but is not limited to service time, allocated frequency band resources, link quality confirmation conditions, and wake-up and sleep conditions.

[0031] Furthermore, the base station identifies the user identity based on the exclusive tag. If the preset identification of the special terminal is met, the base station directly returns the corresponding resource configuration information in the access response message; and deploys the corresponding air interface resources in advance based on the exclusive tag information.

[0032] Furthermore, the base station identifies the user identity according to the exclusive tag, and if the user identity does not meet the preset identification of the special terminal, the base station responds to the conventional access message.

[0033] Furthermore, the status of the special terminal includes a dormant state, a wake-up state, and a data transmission state.

[0034] If the special terminal does not meet the automatic wake-up conditions or is not actively awakened by the corresponding base station or the communication process with the base station is completed, the special terminal status is updated and it automatically enters the sleep state, waiting for the next automatic wake-up or active wake-up by the network side device.

[0035] The special terminal receives the agreed preset information returned by the base station, which carries the automatic wake-up time or wake-up cycle information; the special terminal determines whether it meets the automatic wake-up conditions, and if so, it automatically wakes up.

[0036] The base station can wake up the special terminal. After each communication between the special terminal and the base station is completed, the base station will return new agreed preset information and set a new wake-up time for the special terminal.

[0037] After waking up, the special terminal initiates a random access process to the base station according to the agreed preset information; the base station deploys the corresponding air interface resources in advance according to the exclusive tag of the special terminal and starts the data transmission process; after the communication is completed, the status of the special terminal is updated and it enters the dormant state.

[0038] In an embodiment of the present invention, a computer device is also proposed, including a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, the aforementioned special terminal access method is implemented.

[0039] In an embodiment of the present invention, a computer-readable storage medium is further provided. The computer-readable storage medium stores a computer program for executing the access method for a special terminal.

[0040] The beneficial effect of the present invention is that, in view of the problems that the existing traditional terminal access time is long and the base station has a large amount of calculation, a method for terminal access to quickly access the base station is provided, which reduces the terminal access delay and avoids network congestion.

[0041] 1. This method defines a special terminal mode. When the special terminal initiates a request, it carries preset information and can quickly return the pre-agreed preset information, saving the time that the base station needs to calculate the communication resource allocation by itself.

[0042] 2. The present invention sets a unique terminal identifier for a special terminal through the mobility management entity MME, which is used to identify each special terminal in the local area network. It is equivalent to the identity card of the special terminal, saving the time required for user identification during the random access process.

[0043] 3. The present invention shifts the device management function to the base station when the mobile terminal is in working state, identifies the special terminal and allocates resources to the base station side, and returns the corresponding resource configuration information, thereby achieving the purpose of reducing delay. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0045] Figure 1 This is a schematic diagram of a common terminal access process of the present invention;

[0046] Figure 2 This is a schematic diagram of a special terminal application scenario of the present invention;

[0047] Figure 3 This is a schematic diagram of the special terminal access process of the present invention;

[0048] Figure 4 This is a schematic diagram of a special terminal access process according to an embodiment of the present invention;

[0049] Figure 5 This is a diagram of the special terminal interaction relationship in an embodiment of the present invention;

[0050] Figure 6This is a schematic diagram of the logic processing of special terminal access according to an embodiment of the present invention. DETAILED DESCRIPTION

[0051] To make the purpose, technical solutions and advantages of the embodiments of the present invention more clearly understood, the embodiments of the present invention are further described in detail below with reference to the accompanying drawings. The following examples are only used to more clearly illustrate the system method and technical solutions of the present invention, and are not intended to limit the scope of protection of this application.

[0052] According to an embodiment of the present invention, a method for accessing a special terminal is proposed. The base station can return the pre-agreed preset information according to the exclusive tag information carried by the special terminal proposed by the present invention, eliminating the need for the base station to perform resource calculations based on the terminal request information; greatly optimizing the time it takes for the terminal to access the base station, and avoiding the problem of network congestion caused by excessive base station calculations when a large number of terminals access the network at the same time.

[0053] The principles and spirit of the present invention are explained in detail below with reference to several representative embodiments of the present invention.

[0054] Figure 3 This is a schematic diagram of the access process of the special terminal of the present invention. Figure 3 As shown, the method includes the following steps:

[0055] 1) The mobility management entity (MME) sets a dedicated tag for the corresponding terminal as per the agreement, making it a special terminal, and sends the user identification rules and the corresponding agreed preset information to the corresponding base station in advance;

[0056] In this preferred implementation case, the exclusive tag is a unique terminal identifier set by the mobility management entity MME for the special terminal, and is used to identify each special terminal in the local area network.

[0057] In this preferred implementation use case, the agreed preset information includes but is not limited to resource configuration information such as service time, allocated frequency band resources, link quality confirmation conditions, wake-up and sleep conditions, etc.

[0058] 2) The special terminal adds a pre-set exclusive tag to the connection request message sent to the base station;

[0059] 3) After receiving the connection request message, the base station identifies the user's identity based on the exclusive tag carried by the special terminal and returns a corresponding access response message to the special terminal, wherein the access response message carries the agreed preset information;

[0060] In this preferred implementation use case, the base station identifies the user identity based on the exclusive tag. If the preset identification of the special terminal is met, the corresponding resource configuration information is directly returned in the access response message; and the corresponding air interface resources are deployed in advance according to the exclusive tag information; if the preset identification of the special terminal is not met, the regular access response message is followed.

[0061] 4) After receiving the access response message, the special terminal replies with the agreed confirmation message to the base station, completes the access and pre-scheduling negotiation process according to the resource allocation message contained in the agreed preset information; and enters the data transmission state or the sleep state according to the wake-up or sleep conditions in the agreed preset information.

[0062] In this preferred implementation example, the states of the special terminal include a dormant state, a wake-up state, and a data transmission state.

[0063] If the special terminal does not meet the automatic wake-up conditions or is not actively awakened by the corresponding base station or the communication process with the base station is completed, the special terminal status is updated and it automatically enters the dormant state, waiting for the next automatic wake-up or active wake-up by the base station.

[0064] The special terminal receives the agreed preset information returned by the base station, which carries the automatic wake-up time or wake-up cycle information; the special terminal determines whether it meets the automatic wake-up conditions, and if so, it automatically wakes up.

[0065] Optionally, the base station can wake up the special terminal. Each time the special terminal completes communication with the base station, the base station will return new agreed preset information and set a new wake-up time for the special terminal.

[0066] After waking up, the special terminal initiates a random access process to the base station according to the agreed preset information; the base station deploys the corresponding air interface resources in advance according to the exclusive tag of the special terminal and starts the data transmission process; after the communication is completed, the status of the special terminal is updated and it enters the dormant state.

[0067] It should be noted that although the operations of the method of the present invention are described in a specific order in the above embodiments and drawings, this does not require or imply that these operations must be performed in this specific order, or that all illustrated operations must be performed to achieve the desired results. Additionally or alternatively, certain steps may be omitted, multiple steps may be combined into one step, and / or one step may be broken down into multiple steps.

[0068] In order to explain the access method of the above-mentioned special terminal more clearly, a specific embodiment is described below. However, it should be noted that this embodiment is only for better illustrating the present invention and does not constitute an improper limitation to the present invention.

[0069] Example 1:

[0070] A method for accessing a special terminal includes the following steps:

[0071] In this embodiment, the access process diagram of the special terminal is as follows: Figure 4 shown.

[0072] The following is a more detailed introduction to the access method of the special terminal in the present invention:

[0073] Step 1: The mobility management entity MME sets a dedicated label for the terminal involved as agreed to make it a special terminal.

[0074] Step 2: The mobility management entity MME sends the user identification rules and corresponding agreed preset information to the corresponding base station in advance.

[0075] like Figure 5 As shown, the mobility management entity can communicate with the terminal and the base station, and the base station can establish communication with the terminal.

[0076] Step 3: In this embodiment, Figure 6 As shown in the figure, when a special terminal is powered on for the first time, it scans the Beacon frame information sent by the base station, identifies and discovers the network, camps on the cell, and initiates the random access process. The special terminal performs uplink synchronization adjustment in the idle state. At this time, the special terminal first sends a preamble to the base station. The base station is informed of the request and estimates the time adjustment for the special terminal's uplink synchronization.

[0077] Before joining a network, a wireless terminal must first search for networks in its area. This search is performed through either active scanning or passive scanning. Passive scanning involves base stations periodically broadcasting Beacon frames (carrying their associated SSID (Service Set Identifier)). Special terminals discover networks by listening for Beacon frames, then reside in a cell and initiate a random access process. Random access (RA) involves a terminal sending an access request to the access control system. The base station, using a specific algorithm, allocates access resources such as access channels and time-frequency resource blocks and then transmits this information back to the terminal. Data transmission typically occurs after access resources have been allocated (i.e., successful access). A radio bearer is the data transmission channel between the base station and the terminal. The S1 bearer is the data transmission channel between the base station and the serving gateway. Radio bearers are primarily categorized as Signaling Radio Bearer 0 (SRB0), Signaling Radio Bearer 1 (SRB1), and Data Radio Bearer (DRB). SRBs are used for signaling transmission, while DRBs are used for data transmission.

[0078] In an optional implementation use case, the base station can wake up the special terminal.

[0079] Step 4: After receiving the preamble information, the base station sends a random access response message to the special terminal. The response message mainly includes a time adjustment value and an uplink authorization.

[0080] Step 5: After adjusting uplink synchronization based on the received time adjustment value TA, the special terminal sends a connection request message to the base station over the SRB0 bearer. In the traditional access process, this signaling primarily includes the terminal identifier, establishment scenario, public land mobile network (PLMN) identifier, MME identifier, and NAS service request. This invention differs from the traditional access process by incorporating a pre-defined tag specific to the special terminal into the signaling.

[0081] Step 6: After receiving the connection request message, the base station identifies the user based on the unique tag carried by the special terminal and determines whether the special terminal meets the preset identification requirements. If so, the base station adds the agreed preset information to the subsequent response message. The agreed preset information mainly includes information such as time, allocated frequency resources, link quality confirmation conditions, wake-up and sleep conditions, and returns the corresponding resource configuration information to the special terminal.

[0082] Unlike traditional access processes, this invention eliminates the need for resource scheduling and allocation based on QCI values ​​in traditional systems by appending pre-defined information. QCI (QoS class identifier): A parameter used by the system to identify the transmission characteristics of service data packets. Its values ​​range from 1 to 9, corresponding to different resource types, priorities, delays, and packet loss rates.

[0083] Step 7: After receiving this configuration information, the special terminal replies with an agreement confirmation message to the base station. After receiving the agreement preset information carried in the response message, the special terminal completes the access and pre-scheduling process according to the resource allocation information contained in the agreement preset information.

[0084] Step 8: At this point, the access and pre-scheduling process is complete, and the special terminal determines whether to enter the data transmission state or the sleep state based on the wake-up or sleep condition in the agreed preset information received in step 7. If entering the data transmission state, the special terminal sends uplink data to the base station.

[0085] Each time the special terminal completes communication with the base station, the base station will return new agreed preset information and set a new wake-up time for the special terminal.

[0086] In this embodiment, the special terminal mainly has the following three states:

[0087] Sleep state: If a special terminal does not meet the automatic wake-up conditions or is not actively awakened by the corresponding base station or ends the communication process with the base station, it will automatically enter the sleep state after updating its exclusive tag, waiting for the next automatic wake-up or being actively awakened by the network side device.

[0088] Awakening: The special terminal receives preset information from the base station, which includes information such as the automatic wake-up time or period. The special terminal automatically wakes up when it determines that the conditions are met. In addition to active wake-up by the special terminal, the base station can also wake up the special terminal. After each communication with the base station, the special terminal returns a new preset information, setting a new wake-up time for the special terminal.

[0089] Data transmission state: After waking up, the special terminal initiates a random access process with the base station using pre-set resources. The base station pre-deploys the corresponding air interface resources based on the special terminal's unique tag and begins the data transmission process. After the communication is completed, the special terminal's state is updated and it enters the dormant state.

[0090] The present invention presets exclusive tags for special terminals through the mobile management entity. The base station identifies the preset identity of the special terminal based on the exclusive tag, directly returns the agreed preset information in the access response message, and deploys air interface resources in advance, which greatly optimizes the time for the terminal to access the base station and avoids the problem of network congestion caused by excessive base station calculation when a large number of terminals access the network at the same time.

[0091] The applicant of the present invention has made a detailed explanation and description of the implementation examples of the present invention in conjunction with the drawings in the specification. The above implementation examples are only preferred implementation plans of the present invention. The detailed description is only to help readers better understand the spirit of the present invention, and it is not a limitation on the scope of protection of the present invention. On the contrary, any improvements or modifications based on the inventive spirit of the present invention should fall within the scope of protection of the present invention.

Claims

1. A method for accessing a special terminal, characterized in that: The method comprises the following steps: 1) The mobility management entity (MME) sets a dedicated tag for the corresponding terminal as per the agreement, making it a special terminal, and sends the user identification rules and the corresponding agreed preset information to the corresponding base station in advance; 2) The special terminal adds a pre-set exclusive tag to the connection request message sent to the base station; 3) After receiving the connection request message, the base station identifies the user's identity based on the exclusive tag carried by the special terminal and returns a corresponding access response message to the special terminal, wherein the access response message carries the agreed preset information; 4) After receiving the access response message, the special terminal replies with an agreement confirmation message to the base station and completes the access and pre-scheduling negotiation process according to the resource allocation message included in the agreed preset information; And according to the wake-up or sleep conditions in the agreed preset information, enter the data transmission state or sleep state.

2. The method for accessing a special terminal according to claim 1, wherein: The dedicated tag is a unique terminal identifier set by the mobility management entity MME for the special terminal, and is used to identify each special terminal in the local area network.

3. The method for accessing a special terminal according to claim 1, wherein: The predetermined preset information includes but is not limited to service time, allocated frequency band resources, link quality confirmation conditions, and wake-up and sleep conditions.

4. The method for accessing a special terminal according to claim 1, wherein: The base station identifies the user identity based on the exclusive tag. If the preset identification of the special terminal is met, the base station directly returns the corresponding resource configuration information in the access response message; and deploys the corresponding air interface resources in advance based on the exclusive tag information.

5. The method for accessing a special terminal according to claim 1, wherein: The base station identifies the user identity according to the exclusive tag, and if the user identity does not meet the preset identification of the special terminal, the base station responds to the conventional access information.

6. The method for accessing a special terminal according to claim 1, wherein: The states of the special terminal include a dormant state, an awake state, and a data transmission state.

7. The method for accessing a special terminal according to claim 6, wherein: If the special terminal does not meet the automatic wake-up conditions or is not actively awakened by the corresponding base station or the communication process with the base station is completed, the special terminal status is updated and it automatically enters the sleep state, waiting for the next automatic wake-up or active wake-up by the network side device.

8. The method for accessing a special terminal according to claim 6, wherein: The special terminal receives the agreed preset information returned by the base station, which carries the automatic wake-up time or wake-up cycle information; the special terminal determines whether it meets the automatic wake-up conditions, and if so, it automatically wakes up.

9. The method for accessing a special terminal according to claim 6, wherein: The base station can wake up the special terminal. After each communication between the special terminal and the base station is completed, the base station will return new agreed preset information and set a new wake-up time for the special terminal.

10. The method for accessing a special terminal according to claim 6, wherein: After waking up, the special terminal initiates a random access process to the base station according to the agreed preset information; the base station deploys the corresponding air interface resources in advance according to the unique tag of the special terminal and starts the data transmission process; After the communication is completed, the special terminal status is updated to put it into sleep state.

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