WO2022116809A1 - Random access method, apparatus and system - Google Patents

Abstract

Provided are a random access method, apparatus and system. The method comprises: a terminal device generating a random access identifier, wherein the random access identifier is used for identifying the terminal device during a random access process; the terminal device sending a first request message to an access node, wherein the first request message comprises the random access identifier, and the first request message is used for requesting access to a wireless network; and the terminal device receiving a first response message from the access node, wherein the first response message comprises the random access identifier, the length of the random access identifier is less than the length of a temporary mobile user identifier, and the length of the temporary mobile user identifier is greater than or equal to 64 bits. After the length of a temporary mobile user identifier is extended, a terminal device generates a random access identifier that meets a length requirement, such that the terminal device can still normally access a wireless network during a random access process, thereby ensuring the success rate of random access.

Description

Method, device and system for random access

This application claims the priority of the Chinese patent application with the application number 202011404557.3 and the invention title "Method, Apparatus and System for Random Access" filed with the State Intellectual Property Office of China on December 4, 2020, the entire contents of which are incorporated by reference in this application.

technical field

The present application relates to the field of communications, and more particularly, to a method, apparatus and system for random access.

Background technique

In the random access process, the terminal device sends an initial uplink transmission message to the access node, and if the terminal device is allowed to access, the access node sends a contention resolution message to the terminal device. Wherein, both the above-mentioned initial uplink transmission message and the contention resolution message may carry the wireless access user identity, and the wireless access user identity may be used to identify the terminal equipment in the random access process. The terminal device learns whether it has successfully accessed by judging whether the wireless access user identity carried in the contention resolution message is consistent with the wireless access user identity carried in the initial uplink transmission message by itself.

At present, the composition structure of the wireless access user identity includes a temporary mobile user identity, and the temporary mobile user identity is a part of the fields in the globally unique temporary mobile user identity. The temporary mobile user identity is used to identify or find the context of the terminal device stored on the network device. In addition, a randomization field is left in the temporary mobile user identity, so that the globally unique temporary user identity of the terminal device can change frequently.

With the continuous development of mobile communication technology, the current global unique temporary user identity allocation management mechanism has been unable to meet the increasing demands of users. In order to support more users, the globally unique temporary user ID can be extended by extending the temporary mobile user ID. However, the extension of the temporary mobile user identity leads to the change of the wireless access user identity, which may lead to the access failure of the terminal equipment in the random access process, and reduce the random access success rate.

SUMMARY OF THE INVENTION

The present application provides a method, device and system for random access, which can still achieve successful access of terminal equipment in the random access process and ensure the success rate of random access even when the length of the temporary mobile user identity is extended.

In a first aspect, a random access method is provided, the method comprising: generating a random access identifier by a terminal device, where the random access identifier is used to identify the terminal device in a random access process; The node sends a first request message, the first request message includes the random access identifier, and the first request message is used to request access to the wireless network in the random access process; the terminal device receives the first request from the access node. A response message, the first response message includes the random access identifier; wherein, the length of the random access identifier is less than the length of the temporary mobile user identifier of the terminal device, and the length of the temporary mobile user identifier is greater than or equal to 64 bits .

In the technical solution of this embodiment, during the random access process, considering that the temporary mobile user identity exceeds the limit of the length of the message exchanged between the terminal device and the access node, the random access identifier sent and received by the terminal device is The extended temporary mobile user identity is not directly included in the composition structure, but the random access identity is generated by the terminal device itself.

According to the solution of this embodiment of the present application, when the length of the temporary mobile user identity is greater than the length of the random access identity, the terminal device generates a random access identity that meets the length requirement, so that the terminal device can access the random access process normally. wireless network.

With reference to the first aspect, in some implementations of the first aspect, the terminal device sends a radio resource control RRC connection establishment complete message to the access node; wherein, the RRC connection establishment complete message includes the service temporary of the terminal device. A mobile user identity, the serving temporary mobile user identity includes the temporary mobile user identity and the identity of the first access management node.

It should be understood that the above-mentioned RRC connection establishment complete message has no length limit, and the service temporary mobile user identity after the length extension can be directly sent.

In the technical solution of this embodiment, after the temporary mobile user ID is extended to 64 bits or longer, the network device can allocate non-conflicting globally unique temporary user IDs to more users, and can ensure that the globally unique temporary user IDs Sufficient randomization field space, higher security.

With reference to the first aspect, in some implementation manners of the first aspect, the generating, by the terminal device, the random access identifier includes: the terminal device generating the random access identifier according to the temporary mobile user identifier; or, the terminal device generating the random access identifier according to the first A globally unique temporary user identifier generates the random access identifier through a specific algorithm, and the composition structure of the first globally unique temporary user identifier includes the temporary mobile user identifier; or, the terminal device generates a random number as the random access identifier .

With reference to the first aspect, in some implementations of the first aspect, optionally, the terminal device generates the random access identifier according to the temporary mobile user identifier, including:

In some possible implementations, the random access identifier is generated according to the temporary mobile user identifier and a specific algorithm.

In some possible implementations, the random access identifier is generated according to the identifier of the first access management node, the temporary mobile user identifier and a specific algorithm.

In some possible implementations, the random access identifier is generated according to the identifier related to the first access management node, the temporary mobile user identifier and a specific algorithm.

In some possible implementations, the random access identifier is generated according to the temporary mobile user identifier, other fields in the service temporary mobile user identifier, and a specific algorithm.

In some possible implementations, the random access identifier is generated according to some fields in the identifier of the first access management node, the temporary mobile user identifier and a specific algorithm.

With reference to the first aspect, in some implementations of the first aspect, the method further includes: the terminal device sends a registration request message to the access node, where the registration request message includes a first globally unique temporary user identifier, the first A globally unique temporary user identity is allocated by the first access management node.

With reference to the first aspect, in some implementations of the first aspect, after the terminal device sends a registration request message to the access node, the method further includes: receiving a registration acceptance message from the access node, the registration acceptance The message includes a second globally unique temporary user identifier, and the second globally unique temporary user identifier is allocated by the first access management node or the second access management node; wherein the second globally unique temporary user identifier is associated with the first globally unique temporary user identifier. The globally unique temporary user identifier is different, and the first access management node is different from the second access management node.

In a second aspect, a random access method is provided, the method comprising: an access node receiving a first request message from a terminal device, where the first request message is used to request access to a wireless network in a random access process, The first request message includes a random access identifier, and the random access identifier is used to identify the terminal device during the random access process; the access node sends a first response message to the terminal device, and the first response message contains Including the random access identifier; wherein, the length of the random access identifier is less than the length of the temporary mobile user identifier of the terminal device, and the length of the temporary mobile user identifier is greater than or equal to 64 bits.

In the technical solution of this embodiment, during the random access process, considering that the temporary mobile user identity exceeds the limit of the length of the message exchanged between the terminal device and the access node, the random access identifier sent and received by the terminal device is The extended temporary mobile user identity is not directly included in the composition structure, but the random access identity is generated by the terminal device itself.

With reference to the second aspect, in some implementations of the second aspect, the method further includes: the access node receiving a radio resource control RRC connection establishment complete message from the terminal device, where the RRC connection establishment complete message includes a service temporary mobile user identity, the serving temporary mobile user identity includes the temporary mobile user identity and the identity of the first access management node, the serving temporary mobile user identity is allocated by the first access management node; the access node according to the service Temporarily move the user identity, and select the second access management node for the terminal device.

In the technical solution of this embodiment, after the temporary mobile user ID is extended to 64 bits or longer, the network device can allocate non-conflicting globally unique temporary user IDs to more users, and can ensure that the globally unique temporary user IDs Sufficient randomization field space, higher security.

With reference to the second aspect, in some implementations of the second aspect, after the access node receives the RRC connection establishment complete message from the terminal device, the access node selects a second access management node for the terminal device, It also includes: the access node generates a first identifier according to the service temporary mobile user identifier; when the first identifier is the same as the random access identifier, the access node selects a second access management node for the terminal device.

With reference to the second aspect, in some implementations of the second aspect, the access node generates the first identifier according to the serving temporary mobile user identifier, including:

In some possible implementations, the first identification is generated according to the temporary mobile user identification and a specific algorithm.

In some possible implementations, the first identifier is generated according to the identifier of the first access management node, the temporary mobile user identifier and a specific algorithm.

It should be understood that the manner in which the access node generates the first identifier is exactly the same as the manner in which the terminal device generates the random access identifier, so that the access node can verify the identity of the terminal device. When the terminal device generates a random access identifier according to a field other than the service temporary mobile user identifier, or uses a random number to generate the random access identifier, the access node cannot verify the identity of the terminal device in this solution.

According to the solutions of the embodiments of the present application, the access node verifies the identity of the terminal device after the random access process, which further improves the accuracy and security of the random access process.

With reference to the second aspect, in some implementations of the second aspect, the method further includes: the access node receiving a registration request message from the terminal device; sending the registration request message to the second access management node, the The registration request message includes a first globally unique temporary user identifier, and the first globally unique temporary user identifier is allocated to the terminal device by the first access management node.

With reference to the second aspect, in some implementations of the second aspect, the method further includes: the access node receiving a registration acceptance message from the second access management node; the access node sending the registration to the terminal device An acceptance message; wherein, the registration acceptance message includes a second globally unique temporary user identifier, and the second globally unique temporary user identifier is allocated by the second access management node for the terminal device; wherein, the second globally unique temporary user identifier The temporary user identification is different from the first globally unique temporary user identification.

A third aspect provides an apparatus for random access, the apparatus comprising: a processing module configured to generate a random access identifier, where the random access identifier is used to identify the terminal device in a random access process; a transceiver module, is used to send a first request message to the access node, where the first request message includes the random access identifier, and the first request message is used to request access to the wireless network during the random access process; the transceiver module is also used for After receiving the first response message from the access node, the first response message includes the random access identifier, wherein the length of the random access identifier is less than the length of the temporary mobile user identifier, and the length of the temporary mobile user identifier Greater than or equal to 64 bits.

In the technical solution of this embodiment, during the random access process, considering that the temporary mobile user identity exceeds the limit of the length of the message exchanged between the terminal device and the access node, the random access identifier sent and received by the terminal device is The extended temporary mobile user identity is not directly included in the composition structure, but the random access identity is generated by the terminal device itself.

According to the solution of this embodiment of the present application, when the length of the temporary mobile user identity is greater than the length of the random access identity, the terminal device generates a random access identity that meets the length requirement, so that the terminal device can access the random access process normally. wireless network.

With reference to the third aspect, in some implementations of the third aspect, the transceiver module is further configured to send a radio resource control RRC connection establishment complete message to the access node; wherein the RRC connection establishment complete message includes the terminal The service temporary mobile user identity of the device includes the temporary mobile user identity and the identity of the first access management node.

In the technical solution of this embodiment, after the temporary mobile user ID is extended to 64 bits or longer, the network device can allocate non-conflicting globally unique temporary user IDs to more users, and can ensure that the globally unique temporary user IDs Sufficient randomization field space, higher security.

With reference to the third aspect, in some implementations of the third aspect, the processing module is specifically configured to: generate the random access identifier according to the temporary mobile user identifier; or, generate through a specific algorithm according to the first globally unique temporary user identifier For the random access identifier, the composition structure of the first globally unique temporary user identifier includes the temporary mobile user identifier; or, a random number is generated as the random access identifier.

With reference to the third aspect, in some implementations of the third aspect, the processing module is further used for:

In some possible implementations, the random access identifier is generated according to the temporary mobile user identifier and a specific algorithm.

In some possible implementations, the random access identifier is generated according to the identifier of the first access management node, the temporary mobile user identifier and a specific algorithm.

In some possible implementations, the random access identifier is generated according to the identifier related to the first access management node, the temporary mobile user identifier and a specific algorithm.

In some possible implementations, the random access identifier is generated according to the temporary mobile user identifier, other fields in the service temporary mobile user identifier, and a specific algorithm.

In some possible implementations, the random access identifier is generated according to some fields in the identifier of the first access management node, the temporary mobile user identifier and a specific algorithm.

With reference to the third aspect, in some implementations of the third aspect, the transceiver module is further configured to: send a registration request message to the access node, where the registration request message includes a first globally unique temporary user identifier, the first The globally unique temporary user identity is allocated by the first access management node.

With reference to the third aspect, in some implementations of the third aspect, the transceiver module is further configured to: receive a registration acceptance message from the access node, where the registration acceptance message includes a second globally unique temporary user identifier, the Two globally unique temporary user identifiers are allocated by the first access management node or the second access management node; wherein, the second globally unique temporary user identifier is different from the first globally unique temporary user identifier, and the first access management The node is different from the second access management node.

In a fourth aspect, a random access apparatus is provided, the apparatus includes: a transceiver module, configured to receive a first request message from a terminal device, where the first request message is used to request wireless access in a random access process network, the first request message includes a random access identifier, and the random access identifier is used to identify the terminal device during the random access process; the transceiver module is further configured to send a first response message to the terminal device, the The first response message includes the random access identifier, the length of the random access identifier is less than the length of the temporary mobile user identifier of the terminal device, and the length of the temporary mobile user identifier is greater than or equal to 64 bits.

In the technical solution of this embodiment, during the random access process, considering that the temporary mobile user identity exceeds the limit of the length of the message exchanged between the terminal device and the access node, the random access identifier sent and received by the terminal device is The extended temporary mobile user identity is not directly included in the composition structure, but the random access identity is generated by the terminal device itself.

With reference to the fourth aspect, in some implementations of the fourth aspect, the transceiver module is further configured to receive a radio resource control RRC connection establishment complete message from the terminal device, where the RRC connection establishment complete message includes serving the temporary mobile user identification, the service temporary mobile user identification includes the temporary mobile user identification and the identification of the first access management node, the service temporary mobile user identification is allocated by the first access management node; processing module, according to the service temporary mobile user identification, and select a second access management node for the terminal device.

With reference to the fourth aspect, in some implementations of the fourth aspect, the processing module is further configured to: generate a first identifier according to the service temporary mobile user identifier; when the first identifier is the same as the random access identifier, the The access node selects a second access management node for the terminal device.

With reference to the fourth aspect, in some implementations of the fourth aspect, the processing module is further used for:

In some possible implementations, the first identification is generated according to the temporary mobile user identification and a specific algorithm.

In some possible implementations, the first identifier is generated according to the identifier of the first access management node, the temporary mobile user identifier and a specific algorithm.

With reference to the fourth aspect, in some implementations of the fourth aspect, the transceiver module is further configured to receive a registration request message from the terminal device; the transceiver module is further configured to send the registration request to the second access management node message, the registration request message includes a first globally unique temporary user identifier, and the first globally unique temporary user identifier is allocated for the terminal device by the first access management node.

With reference to the fourth aspect, in some implementations of the fourth aspect, the transceiver module is further configured to: receive a registration acceptance message from the second access management node, and send the registration acceptance message to the terminal device; wherein the The registration acceptance message includes a second globally unique temporary user identifier, and the second globally unique temporary user identifier is allocated for the terminal device by the second access management node; wherein, the second globally unique temporary user identifier is associated with the first globally unique temporary user identifier. A globally unique temporary user ID is different.

In a fifth aspect, a communication device is provided, the device comprising: a processor and a memory; the memory for storing a computer program; the processor for executing the computer program stored in the memory, so that the communication device executes The communication method in the first aspect and any one of the first to third possible implementations of the first aspect, or implementing the second aspect and any one of the first to third possible implementations of the second aspect method of communication.

In a sixth aspect, a computer-readable storage medium is provided, and a computer program is stored on the computer-readable storage medium, and when the computer program runs on a computer, the computer is made to execute the first aspect and the first aspect of the first aspect. A communication method in any one of the possible implementation manners from one to the third, or performing the communication method in any one of the first to third possible implementation manners of the second aspect and the second aspect.

In a seventh aspect, a chip system is provided, the chip system includes: a processor for calling and running a computer program from a memory, so that a communication device installed with the chip system executes the first aspect and the first aspect of the first aspect. A communication method in any one of the possible implementation manners from one to the third, or performing the communication method in any one of the first to third possible implementation manners of the second aspect and the second aspect.

According to the solution of the embodiment of the present application, when the length of the temporary mobile user identity is greater than the length of the random access identity, the terminal device generates a random access identity that meets the length requirement, so that the terminal device can successfully access the wireless network during the random access process. network. Moreover, after the temporary mobile user identity is extended to 64 bits or longer, the network device can allocate non-conflicting global unique temporary user identities to more users, and can ensure sufficient randomization field space in the global unique temporary user identity , higher security.

Description of drawings

FIG. 1 is a schematic diagram of a logical architecture of a mobile communication network.

Figure 2 shows a schematic block diagram of a GUTI in a 4G network.

Figure 3 shows a schematic block diagram of a 5G-GUTI in a 5G network.

FIG. 4 shows a schematic interaction diagram of a contention-based random access procedure.

FIG. 5 is a schematic interaction diagram of an example of the random access method of the present application.

FIG. 6 is a schematic interaction diagram of another example of the random access method of the present application.

FIG. 7 is a schematic block diagram of an example of a terminal device of the present application.

FIG. 8 is a schematic block diagram of an example of an access node of the present application.

FIG. 9 is a schematic block diagram of an example of a communication device of the present application.

FIG. 10 is a schematic block diagram of still another example of the communication device of the present application.

Detailed ways

The technical solutions in the present application will be described below with reference to the accompanying drawings.

As used in this application, the terms "component," "module," "system," etc. are used to refer to a computer-related entity, hardware, firmware, a combination of hardware and software, software, or software in execution. For example, a component may be, but is not limited to, a process running on a processor, a processor, an object, an executable, a thread of execution, a program, and/or a computer. By way of illustration, both an application running on a computing device and the computing device may be components. One or more components may reside within a process and/or thread of execution, and a component may be localized on one computer and/or distributed between 2 or more computers. In addition, these components can execute from various computer readable media having various data structures stored thereon. A component may, for example, be based on a signal having one or more data packets (eg, data from two components interacting with another component between a local system, a distributed system, and/or a network, such as the Internet interacting with other systems via signals) Communicate through local and/or remote processes.

The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: global system of mobile communication (GSM) system, code division multiple access (CDMA) system, wideband code division multiple access (wideband code division multiple access, WCDMA) system, general packet radio service (general packet radio service, GPRS), long term evolution (long term evolution, LTE) system, LTE frequency division duplex (frequency division duplex, FDD) system, LTE Time division duplex (TDD), universal mobile telecommunication system (UMTS), worldwide interoperability for microwave access (WiMAX) communication system, fifth generation system or new wireless (new radio, NR), and future communication systems.

With the development of communication technology, mobile communication systems will not only support traditional communication, but also support, for example, device to device (D2D) communication, machine to machine (M2M) communication, machine type communication ( machine type communication, MTC), vehicle to everything (V2X) communication, for example, vehicle to vehicle (V2V) communication, vehicle to infrastructure (V2I) communication, vehicle to pedestrian (vehicle to pedestrian) to pedestrian, V2P) communication, vehicle to network (vehicle to network, V2N) communication.

FIG. 1 is a schematic diagram of a logical architecture of a mobile communication network. Each network element that may be involved in the logical architecture of the network will be described below.

1. Terminal equipment: It can include various handheld devices with wireless communication functions, vehicle-mounted devices, wearable devices, computing devices or other processing devices connected to wireless modems, as well as various forms of terminals, mobile stations (mobile stations, MS ), terminal (terminal), user equipment (UE), soft terminal, etc. For example, water meters, electricity meters, sensors, etc.

2. Access node: It is used to provide network access function for authorized terminal equipment in a specific area, and can use transmission tunnels of different qualities according to the level of terminal equipment and service requirements.

The access node can be a (radio access network, (R)AN) network element, which is used to manage wireless resources, provide access services for terminal equipment, and then complete control signals and terminal equipment data in terminal equipment and terminal equipment. For forwarding between core networks, the (R)AN network element can also be understood as a base station in a traditional network.

It should be noted that the above-mentioned "network element" may also be referred to as an entity, a device, an apparatus, or a module, etc., which is not particularly limited in this application. In addition, in this application, in order to facilitate understanding and description, the description of "network element" is omitted in some descriptions. For example, the (R)AN network element is abbreviated as (R)AN, in this case, the "(R)AN ")AN network element" should be understood as (R)AN network element or (R)AN entity, and below, the description of the same or similar situations is omitted.

The access node may also include a centralized unit (CU) node, or a distributed unit (DU) node, or a RAN device including a CU node and a DU node, or a control plane CU node (CU-CP node) and user plane CU nodes (CU-UP nodes) and DU nodes.

3. Access management node: mainly used for mobility management and access management. Specifically, it can be used to implement functions other than session management in the functions of a mobility management entity (mobility management entity, MME), for example, functions such as legal interception and access authorization/authentication.

In a 5G communication system, the access management network element may be an access and mobility management function (AMF) network element. In the future communication system, the access management network element may still be an AMF network element, or may have other names, which are not limited in this application.

4. Data management function network element: used to process terminal equipment identification, access authentication, registration and mobility management.

In a 5G communication system, the data management network element may be a unified data management (unified data management, UDM) network element. In the future communication system, the unified data management may still be a UDM network element, or may have other names, which are not limited in this application.

Before introducing the embodiments of the present application, first briefly introduce several identifier names related to the embodiments of the present application, which may be corresponding identifiers in the 4G or 5G system mentioned in the present application. It should be noted that in future communication systems, these identifiers may use existing identifier names, or may be other identifier names, which are not limited in this application.

1. Globally Unique Temporary User ID

In a wireless network, the permanent identification of the terminal equipment can be used to uniquely identify the terminal equipment, such as the International Mobile Subscriber Identity (IMSI). However, there is a security risk when the wireless network directly transmits the permanent identity, and for this reason, the network device will assign a globally unique temporary user identity to the terminal device. The above-mentioned globally unique temporary user identifier is used to temporarily and uniquely identify the terminal device.

In order to further improve security, the network device will also frequently update the globally unique temporary user identifier of the terminal device. For example, the globally unique temporary user identity may be the globally unique temporary user identity (GUTI) in the fourth generation (4th generation, 4G) system, or the globally unique temporary user identity (GUTI) in the fifth generation (5th generation, 5G) system. 5G Globally Unique Temporary UE Identity (5G-GUTI). FIG. 2 is a schematic diagram of a global unique temporary user identity in a 4G system, and FIG. 3 is a schematic diagram of a global unique temporary user identity in a 5G system.

2. Temporary mobile user ID

In order to enable the network device to quickly find the locally stored context of the terminal device according to the globally unique temporary user identity, when allocating the globally unique temporary user identity to the terminal device, the temporary mobile user identity of the terminal device will be used as the Some fields.

In addition, a randomization field is reserved in the temporary mobile user identity, so that the globally unique temporary user identity of the terminal device can change frequently.

Specifically, the temporary mobile subscriber identity may be M-TMSI (MME-temporary mobile subscriber identity) in the 4G system, or 5G-TMSI (5G-temporary mobile subscriber identity) in the 5G system. For example, the temporary mobile subscriber identity may be the M-TMSI in FIG. 2 or the 5G-TMSI in FIG. 3 .

The network device may be an AMF in a 5G system, an MME in a 4G system, or other network-side devices that store the context of the terminal device, which is not limited.

3. Service Temporary Mobile User ID

In order to enable other devices in the wireless network to address the above-mentioned network device serving the terminal device, when the network device allocates the globally unique temporary user identifier, the network device identifier used to identify the network device will be used as the globally unique temporary user identifier. some fields in . The serving temporary mobile user identity is composed of the above-mentioned temporary mobile user identity and the network device identity. The serving temporary mobile subscriber identity may be S-TMSI (serving-temporary mobile subscriber identity) in the 4G system or 5G-S-TMSI (5G-S serving-temporary mobile subscriber identity) in the 5G system. The serving temporary mobile subscriber identity may be the S-TMSI in FIG. 2 or the 5G-S-TMSI in FIG. 3 .

In other words, other devices in the wireless network can first address the above-mentioned network device serving the terminal device according to the network ID in the serving temporary mobile user ID, and then find out according to the temporary mobile user ID in the serving temporary mobile user ID The context of the terminal device in the network device.

4. Random access identification

The random access identifier is used to identify the terminal equipment in the random access process. Specifically, the terminal device sends the random access identifier to the network device, and after the network device determines that the terminal device is allowed to access the wireless network, it sends the random access identifier to the terminal device. It is consistent to know that the random access is successful. In the existing 4G network, the random access identifier can be the wireless access user identifier as shown in Figure 2, with a length of 40 bits, including M-TMSI and MME Code; in the 5G network, the random access identifier and Figure 3 The composition and structure of the wireless access user identity in the WLAN are the same, with a length of 39 bits, including 5G-TMSI and some fields related to the AMF identity.

The random access process is described below.

The random access process refers to the process from when the user sends the random access preamble sequence and attempts to access the network to the establishment of a basic signaling connection with the network. The random access process is the most basic requirement for any cellular communication system. One of them is used to enable the terminal to establish data communication with the network side. The random access process is divided into: a contention-based random access process and a non-contention-based random access process. Figure 4 shows the four steps of the contention-based random access process, including:

S401, the terminal device sends a random access preamble sequence (preamble) to the access node;

S402, the access node broadcasts a random access response, and the terminal device obtains the information sent by the access node by reading the system broadcast message;

S403, the terminal device sends an initial uplink transmission message to the access node.

After receiving the random access response, the terminal transmits a message on the allocated uplink resources. There may be multiple terminal devices that read the system broadcast message of the access node and select the same resource to access at the same time. Therefore, in the message of this step, the terminal device carries the identification of the terminal device, that is, the existing wireless access user identification. . For example, the 40-bit S-TMSI shown in FIG. 2; or the wireless access user identity shown in FIG. 3, the length is 39 bits. As can be seen from the figure, the composition structure of the wireless access user identity includes the temporary mobile user identity.

S404, the access node sends a contention resolution message to the terminal device.

Exemplarily, if the terminal device wins the conflict resolution, the access node returns the wireless access user identity of the winning terminal device to the terminal device. The terminal device learns that its access is successful according to the consistency between the received wireless access user ID and the one sent by itself. Subsequently, the terminal device may send a registration request message to the network side to perform network registration.

It should be noted that the above-mentioned wireless access user identifier has a limited length, for example, it cannot exceed 40 bits in a 4G system, and cannot exceed 39 bits in a 5G system. The composition structure of the above wireless access user identity includes a temporary mobile user identity.

At present, the length of the temporary mobile user identity is 32 bits, and in order to support millions or even tens of millions of users, and to ensure that the allocated temporary identity does not conflict, the length of the temporary mobile user identity can be extended to 64 bits or longer. After the temporary mobile user identity is extended, if the existing wireless access user identity composition structure is still used, the length of the wireless access user identity exceeds the above-mentioned length limit, resulting in failure of the terminal device to access.

For example, when the length of the extended temporary mobile user identity is greater than or equal to 64 bits, in step 3 of the random access process, if the wireless access user identity still uses the existing structure, its length will exceed The length limit of the "Initial Uplink Transmission Message" sent by the terminal equipment causes random access failure.

FIG. 5 shows an example of a schematic interaction diagram of a random access method 500 of the present application, where the method 500 is performed by a terminal device and an access node, as described below.

S501, the terminal device generates a random access identifier.

Wherein, the random access identifier is used to identify the terminal equipment in the random access process.

Optionally, the length of the random access identifier meets the length requirement, that is, it is less than or equal to the first preset length, so as to satisfy the normal transmission of the first request message between the terminal device and the access node. For example, the first preset length is the restricted length of the above-mentioned wireless access user identification, that is, the length of the random access identification may be less than or equal to the above-mentioned restricted length of the wireless access user identification, such as 40 bits in the 4G system, in the 39 bits in a 5G system. That is, the length requirement of the "random access identifier" here is 40 bits under the existing 4G communication system, and 39 bits under the existing 5G communication system. It is consistent in the system, and may also be inconsistent with the existing system, which is not limited in this application.

Optionally, in the extended temporary mobile user identity scenario, it is assumed that the length of the extended temporary mobile user identity is greater than or equal to 64 bits, and the length of the random access identity is less than the length of the extended temporary mobile user identity.

As an example, this step is between the second interaction information and the third interaction information in the random access process, that is, the terminal device receives the random access response message from the access node (corresponding to S402 in FIG. 4 ). ) and the terminal device sends an initial uplink transmission message to the access node (corresponding to S403 in FIG. 4 ).

In the present application, the terminal device automatically generates a random access identifier that meets the message length requirement and can identify the terminal device. Wherein, "capable of identifying terminal equipment" does not necessarily require that the composition structure of the random access identifier includes the field of the temporary mobile user identifier. For example, the terminal device may generate a random access identifier that meets the length requirements based on the temporary mobile user identifier, or A random number that meets the length requirement is generated as the random access identifier, as described below.

Manner 1: The terminal device generates a random access identifier according to the temporary mobile user identifier.

In an optional implementation, the terminal device generates the random access identifier according to the temporary mobile user identifier and a specific algorithm. For example, in a 4G network, the M-TMSI in FIG. 2 can be used to generate a random access identifier through a specific algorithm; in a 5G network, the random access identifier can be generated from the 5G-TMSI in FIG. 3 through a specific algorithm.

In another optional implementation, the random access identifier is generated according to the identifier of the first access management node, the temporary mobile user identifier and a specific algorithm. For example, in a 4G network, the M-TMSI and MME Code in Fig. 2, that is, S-TMSI, can be used to generate a random access identifier through a specific algorithm, or the M-TMSI, MME Code and MME Group ID can be used together through a specific algorithm. Generate a random access identifier. In the 5G network, 5G-TMSI and AMF Pointer can be used to generate random access identifiers through specific algorithms, or 5G-TMSI, AMF Pointer and AMF Set ID, namely 5G-S-TMSI, can be generated through specific algorithms to generate random access identifiers , or generate a random access identifier from 5G-S-TMSI and AMF Region ID through a specific algorithm.

In another optional implementation, the terminal device generates a random access identifier according to a partial field of the identifier of the first access management node, the temporary mobile user identifier and a specific algorithm. For example, the wireless access user identity in FIG. 3 can be used to generate a random access identity through a specific algorithm, or one bit in the AMF Set ID can be used together with AMF Pointer and 5G-TMSI to generate a random access identity through a specific algorithm. .

In a second manner, the terminal device generates a random access identifier according to the first globally unique temporary user identifier and a specific algorithm.

As an example, a 40-bit random access identifier is generated from the entire GUTI in the 4G network through a specific algorithm; or a 39-bit random access identifier is generated from the entire 5G-GUTI in the 5G network through a specific algorithm.

It should be pointed out that the "specific algorithm" mentioned above may be a hash digest algorithm, which is not limited.

Manner 3: The terminal device generates a random number as the random access identifier.

Wherein, the length of the random number only needs to meet the above-mentioned length requirements, that is, it is less than or equal to the first preset length.

S502, the terminal device sends a first request message to the access node, where the first request message includes the above random access identifier.

The first request message may be used to request access to the wireless network in the random access process, and may specifically be a random access request message or an uplink initial transmission message, which is not limited.

Exemplarily, the terminal device sends a radio resource control RRC connection establishment request message to the access node, where the message includes a first request message, and the first request message includes the random access identifier generated by the terminal device in step S501.

S503, the access node sends a first response message to the terminal device, where the first response message includes a random access identifier.

It should be understood that the access node will send the random access identifier of the terminal device that wins the random access competition to the terminal device in the first response message. If the received random access identifier is its own random access identifier, Then the terminal device learns that its access is successful.

Exemplarily, the access node sends an RRC connection establishment response message to the terminal device, where the RRC connection establishment response message includes the first response message.

Wherein, the first response message is used to respond to the first request message, and may specifically be a contention resolution message in the random access process, which is not limited.

Based on the methods provided by the above embodiments, the terminal device can generate a random access identifier that meets the length requirement, and the random access identifier is used to identify the terminal device during the random access process, so that the terminal device can normally operate during the random access process. access to the wireless network. The method can avoid access failure caused by using the existing wireless mobile subscriber identity to perform random access after the temporary mobile subscriber identity is extended to 64 bits or longer.

Optionally, in an implementation scenario of the above embodiment, after step S503, the above method further includes: the terminal device sends a radio resource control RRC connection establishment complete message to the access node, where the RRC connection establishment complete message includes the service The temporary mobile user identity, the serving temporary mobile user identity includes the temporary mobile user identity and the identity of the first access management node.

It should be understood that after the random access is successful, that is, after the RRC connection establishment is completed, the terminal device will send an RRC connection establishment complete message to the access node, where the message carries the serving temporary mobile user identity.

The serving temporary mobile user identity may be used to identify the context of the terminal device in the first access management node.

Optionally, in the scenario of extending the temporary mobile user identity, the above-mentioned serving temporary mobile user identity includes the extended temporary mobile user identity. Since the RRC connection establishment complete message has no message length limit, the message can directly carry the above-mentioned serving temporary mobile user identity. For example, in a 4G communication system, the terminal device sends an S-TMSI to the access node, and the length of the included M-TMSI is greater than or equal to 64 bits; or in a 5G communication system, the terminal device sends a 5G-S to the access node. - TMSI, the length of the included 5G-TMSI is greater than or equal to 64 bits.

In addition, the RRC connection establishment completion message further includes a non-access stratum (non-access stratum, NAS) message, and the NAS message is a registration request message.

Wherein, the registration request message includes a first globally unique temporary user identifier, and the identifier is allocated by the first access management node. For example, in the 4G communication system, the terminal device sends the first GUTI to the access node; or in the 5G communication system, the terminal device sends the first 5G-GUTI to the access node.

Further, after receiving the RRC connection establishment complete message, the access node may also verify the identity of the terminal device. Specifically, the access node may generate a first identifier according to the service temporary mobile user identifier; if the first identifier is the same as the random access identifier, the identity verification of the terminal device is successful.

In an optional implementation manner, the access node generates the first identifier according to the temporary mobile user identifier and a specific algorithm. For example, if the terminal device generates the random access identity according to the temporary mobile user identity and the specific algorithm in step S501, the access node can use the temporary mobile user identity in the RRC connection establishment complete message according to the composition structure of the temporary mobile user identity. User identification, and the specific algorithm generates the first identification.

In another optional implementation manner, the access node generates the first identifier according to the identifier of the first access management node, the temporary mobile user identifier and a specific algorithm. For example, if the terminal device generates the random access identifier according to the temporary mobile user identifier, the identifier of the first access management node and a specific algorithm in step S501, the access node can temporarily move according to the service in the RRC connection establishment complete message The temporary mobile user identity and the identity of the first access management node in the composition structure of the user identity, and the specific algorithm generates the first identity.

Wherein, the specific algorithm may be a hash digest algorithm, which is not limited.

In particular, if in S501, the terminal device uses the method of generating random numbers, or the identifier before the random access identifier is generated by a specific algorithm has a field that is not included in the serving temporary mobile user identifier, the access node and the The identity of the end device could not be verified.

If the first identifier is consistent with the random access identifier received by the access node in step S502, the terminal device is allowed to trigger the registration process, that is, the second access management node is selected for the terminal device, and then the second access management node is sent to the second access management node. The node sends the service temporary mobile user identity.

Based on the solutions of the above embodiments, the access node verifies the identity of the terminal device after the random access process, which further improves the accuracy and security of the random access process.

Subsequently, the access node forwards a registration request message to the second access management node, where the registration request message includes the first global temporary user identity. The first global temporary user identity is allocated by the first access management node, and the first access management node and the second access management node may be the same or different. Further, after receiving the registration request from the terminal device, the second access management node will allocate a global temporary user identifier to the terminal device, which may be referred to as the second global temporary user identifier in this application. The second access management node carries the second global temporary user identity in a registration acceptance message and sends it to the terminal device.

It should be noted that, regardless of whether the second access management node or the first access management node allocates the second global temporary user identifier to the terminal device, the second global temporary user identifier and the first global temporary user identifier are different.

According to the solutions of the embodiments of the present application, the terminal device generates a random access identifier that meets the length requirement, so that the terminal device can normally access the wireless network during the random access process. Moreover, after the temporary mobile user identity is extended to 64 bits or longer, the network device can allocate non-conflicting global unique temporary user identities to more users, and can ensure sufficient randomization field space in the global unique temporary user identity , higher security.

FIG. 6 shows a schematic interaction diagram of a random access method 600 according to an embodiment of the present application.

S601, a terminal device sends a random access preamble sequence to an access node.

Exemplarily, when the terminal device accesses the wireless network, it triggers a random access process, requests the access node to allocate uplink resources through the random access process, and establishes uplink synchronization with the access node. The terminal equipment can randomly select a preamble sequence as the random access preamble sequence, and send it to the access node on the random access channel.

S602, the access node broadcasts a random access response, and the terminal device receives the random access response.

Exemplarily, after detecting the random preamble sequence sent by the terminal device, the access node may send a random access response through a system broadcast message.

Wherein, the random access response may include the random access preamble sequence received in S601 and the information of the uplink resources allocated for the terminal equipment, etc.

S603, the terminal device generates a random access identifier according to the temporary mobile user identifier.

Specifically, for the terminal device to generate the random access identifier according to the temporary mobile user identifier, reference may be made to the first manner in the embodiment shown in FIG. 5 . For example, according to the temporary mobile user identity and a specific algorithm, generate a random access identity with a matching length.

Optionally, in a 4G network, the terminal device generates a random access identifier with a length of 40 bits by using a specific algorithm for the M-TMSI of 64 bits or longer. Or in a 5G network, the terminal device generates a random access identifier with a length of 39 bits by using a specific algorithm for the 64-bit or longer 5G-TMSI.

The specific algorithm may be a hash digest algorithm, or other algorithms capable of implementing similar functions, which are not limited in this embodiment.

S604, the terminal device sends a first request message to the access node on the allocated uplink resource.

Wherein, the first request message includes the random access identifier in S603.

It should be understood that after step S602, there may be multiple terminal devices that read the system broadcast message of the access node, and select the same resource to access at the same time. Therefore, in this step, the terminal device sends an RRC connection establishment request message on the allocated uplink resources, and the message includes the random access identifier, so that after the terminal device receives the contention resolution message including the same random access identifier in the next step, It can be determined that its random access is successful.

S605: The access node sends a first response message to the terminal device, where the first response message includes a random access identifier.

Exemplarily, after determining that the terminal device is allowed to access the wireless network, the access node sends the first response message to the terminal device.

S606, the terminal device sends an RRC connection establishment complete message to the access node, where the RRC connection establishment complete message includes the serving temporary mobile subscriber identity.

For the serving temporary mobile user identity, reference may be made to the relevant description in the embodiment shown in FIG. 5 , and details are not repeated here.

Exemplarily, the terminal device determines that its own access is successful according to the random access identifier included in the received contention resolution message, and then triggers the registration process.

The terminal device sends an RRC connection establishment complete message to the access node, which includes a serving temporary mobile user identity, and the serving temporary mobile user identity includes a temporary mobile user identity whose length is greater than or equal to 64 bits.

At the same time, the RRC connection establishment complete message may also include a registration request message sent through the NAS layer, the message includes a globally unique temporary user identifier, and the composition structure of the globally unique temporary user identifier includes the temporary user identifier whose length is greater than or equal to 64 bits. Mobile user ID.

S607, the access node generates a first identifier.

The access node generates a random access identifier through the temporary mobile user identifier and a specific algorithm according to the terminal device in step S603, then after the access node receives the RRC connection establishment complete message, it will include the service temporary mobile user identifier according to the received service. and the same specific algorithm in step S603 to generate the first identifier. If the first identifier is consistent with the random access identifier in the initial uplink transmission message received by the access node, it means that the identity of the terminal device has been verified, and the access node allows the terminal device to trigger the registration process.

For example, in a 4G network, the access node generates the first identifier according to the M-TMSI and a specific algorithm; or in a 5G network, the access node generates the first identifier according to the 5G-TMSI and a specific algorithm.

S608, the access node selects a second access management node for the terminal device according to the serving temporary mobile user identifier.

S609, the access node sends a registration request message to the second access management node, where the registration request message includes the first globally unique temporary user identifier.

The second access management node determines the first access management node that previously served the terminal device according to the received global unique temporary user identifier, wherein the first access management node and the second access management node may be the same or different. The second access management node acquires the user context of the terminal device.

Specifically, when the first access management node is the same as the second access management node, the second access management node obtains the locally stored user context of the terminal device according to the temporary mobile user identifier included in the globally unique temporary user identifier. When the first access management node is different from the second access management node, the second access management node sends the received globally unique temporary user identifier to the first access management node, and the first access management node according to the globally unique temporary user identifier. The temporary mobile user identity included in the user identity acquires the locally stored user context of the terminal device, and sends the user context to the second access management node.

S610 to S613, the second access management node registers with the data management function, sends an access management node registration request message to the data management function, and receives an access management node registration response message sent by the data management function; the second access management node The contract data acquisition request is sent to the data management function, and the contract data acquisition response sent by the data management function is received, so as to acquire the contract data of the terminal device.

S614: The second access management node sends a registration acceptance message to the terminal device, where the registration acceptance message includes the second globally unique temporary user identifier.

Wherein, the second globally unique temporary user identifier is a globally unique temporary user identifier allocated by the second access management node to the terminal device.

Specifically, after the registration is completed, the second access management node will assign the second globally unique temporary user identifier to the terminal device, that is, send a registration acceptance message to the terminal device, the message including the second globally unique temporary user identifier. The access management node sends a registration acceptance message to the access node through the NAS layer, and the access node forwards the registration acceptance message to the terminal device.

S615, the terminal device sends a registration completion message to the second access management node.

According to the solution of the embodiment of the present application, after extending the length of the temporary mobile user identity, the terminal device generates a random access identity that meets the length requirement, so that the terminal device can normally access the wireless network during the random access process. Moreover, after the temporary mobile user identity is extended to 64 bits or longer, the network device can allocate non-conflicting global unique temporary user identities to more users, and can ensure sufficient randomization field space in the global unique temporary user identity , higher security. Further, the access node verifies the identity of the terminal device after the random access process, which further improves the accuracy and security of the random access process.

In the above, the methods provided by the embodiments of the present application are described in detail with reference to FIG. 5 to FIG. 6 . Hereinafter, the communication apparatus provided by the embodiments of the present application will be described in detail with reference to FIG. 7 to FIG. 10 .

FIG. 7 is a schematic block diagram of a communication apparatus provided by an embodiment of the present application. As shown in the figure, the communication device 10 may include a transceiver module 11 and a processing module 12 .

In a possible design, the communication apparatus 10 may correspond to the terminal device in the above method embodiment. For example, it may be user equipment, or a chip configured in the user equipment.

Specifically, the communication apparatus 10 may correspond to the method 500 and the terminal device in the method 500 according to the embodiments of the present application, and the communication apparatus 10 may include a method for performing the method 500 in FIG. 5 or the method 600 in FIG. 6 . A module of a method executed by an end device. In addition, each unit in the communication device 10 and the above-mentioned other operations and/or functions are respectively to implement the corresponding flow of the method 500 in FIG. 5 or the method 600 in FIG. 6 .

Wherein, when the communication device 10 is used to execute the method 500 in FIG. 5 , the transceiver module 11 can be used to execute steps S502 and S503 in the method 500, and the processing module 12 can be used to execute the step S501 of the method 500.

When the communication device 10 is used to execute the method 600 in FIG. 6 , the transceiver module 11 can be used to execute steps S601 , S602 , S604 , S605 , S606 , S614 and S615 in the method 600 , and the processing module 12 can be used to execute the method 600 step S603.

Specifically, the processing module 12 is configured to generate a random access identifier, and the random access identifier is used to identify the terminal device during the random access process; the transceiver module 11 is configured to send a first request message to the access node, the first The random access identifier is included in the request message, and the first request message is used to request access to the wireless network in the random access process; it is also used to receive a first response message from the access node, the first response message includes the random access identifier, wherein the length of the random access identifier is less than the length of the temporary mobile user identifier of the terminal device, and the length of the temporary mobile user identifier is greater than or equal to 64 bits.

Optionally, the transceiver module 11 is further configured to send a radio resource control RRC connection establishment complete message to the access node, where the RRC connection establishment complete message includes a serving temporary mobile user identity, and the serving temporary mobile user identity includes the temporary mobile user. identity and the identity of the first access management node.

Optionally, the processing module 12 is specifically configured to generate the random access identifier according to the temporary mobile user identifier; or, generate the random access identifier through a specific algorithm according to the first globally unique temporary user identifier, the first globally unique temporary user identifier. The composition structure of the identity includes the temporary mobile user identity; or, a random number is generated as the random access identity.

The processing module 12 is further configured to generate the random access identifier according to the temporary mobile user identifier and a specific algorithm; or, according to the identifier of the first access management node, the temporary mobile user identifier and a specific algorithm, generate the random access identifier. Random access identifier.

The transceiver module 11 is further configured to send a registration request message to the access node, where the registration request message includes a first globally unique temporary user identifier, and the first globally unique temporary user identifier is allocated by the first access management node. The transceiver module 11 receives a registration acceptance message from the access node, the registration acceptance message includes a second globally unique temporary user identifier, and the second globally unique temporary user identifier is managed by the first access management node or the second access management node. Node allocation; wherein, the second globally unique temporary user identifier is different from the first globally unique temporary user identifier, and the first access management node is different from the second access management node.

FIG. 8 is a schematic block diagram of a communication apparatus provided by an embodiment of the present application. As shown in the figure, the communication device 20 may include a transceiver module 21 and a processing module 22 .

In a possible design, the communication device 20 may correspond to the access node in the above method embodiment. For example, it may be the RAN, or a chip configured in the RAN.

Specifically, the communication apparatus 20 may correspond to the network device in the method 500 and the method 600 according to the embodiments of the present application, and the communication apparatus 20 may include a method for performing the method 500 in FIG. 5 or the method 600 in FIG. 6 . A module of a method performed by a network device. In addition, each unit in the communication device 20 and the above-mentioned other operations and/or functions are respectively to implement the corresponding flow of the method 500 in FIG. 5 or the method 600 in FIG. 6 .

When the communication device 20 is used to execute the method 500 in FIG. 5 , the transceiver module 21 can be used to execute steps S502 and S503 in the method 500 .

Wherein, when the communication device 20 is used to execute the method 600 in FIG. 6 , the transceiver module 21 can be used to execute steps S601 , S602 , S604 , S605 , S606 , S609 , S614 , and S615 in the method 600 , and the processing module 22 can be used to Steps S607 and S608 in the method 600 are performed.

Specifically, the transceiver module 21 is configured to receive a first request message from a terminal device, where the first request message is used to request access to a wireless network in a random access process, and the first request message includes a random access identifier, The random access identifier is used to identify the terminal device in the random access process; it is also used to send a first response message to the terminal device, where the first response message includes the random access identifier, wherein the random access identifier The length of the incoming identifier is less than the length of the temporary mobile user identifier of the terminal device, and the length of the temporary mobile user identifier is greater than or equal to 64 bits.

Optionally, the transceiver module 21 is further configured to receive a radio resource control RRC connection establishment complete message from the terminal device, where the RRC connection establishment complete message includes a serving temporary mobile user identity, and the serving temporary mobile user identity includes the temporary mobile user. identity and the identity of the first access management node. The processing module 22 is configured to select a second access management node for the terminal device according to the temporary mobile user identity of the service.

Specifically, the processing module 22 is further configured to generate a first identifier according to the service temporary mobile user identifier; when the first identifier is the same as the random access identifier, the access node selects a second identifier for the terminal device Access the management node. Optionally, the processing module 22 is specifically further configured to generate the first identification according to the temporary mobile user identification and a specific algorithm; or, according to the identification of the first access management node, the temporary mobile user identification and the specific algorithm, generate the first identification.

In addition, the transceiver module 21 is also used to receive a registration request message from the terminal device;

The transceiver module 21 is further configured to send the registration request message to the second access management node, where the registration request message includes a first globally unique temporary user identifier, and the first globally unique temporary user identifier is managed by the first access management Nodes are assigned to the terminal equipment. The transceiver module 21 is further configured to receive a registration acceptance message from the second access management node, and send the registration acceptance message to the terminal device, where the registration acceptance message includes a second globally unique temporary user identifier, the second globally unique The temporary user identifier is allocated to the terminal device by the second access management node; wherein the second globally unique temporary user identifier is different from the first globally unique temporary user identifier.

FIG. 9 is a schematic diagram of a communication apparatus 30 provided by an embodiment of the present application. As shown in FIG. 9 , the apparatus 30 may be a terminal device, including various handheld devices, vehicle-mounted devices, wearable devices, computing devices or Other processing devices connected to the wireless modem, as well as various forms of terminals, mobile stations, terminals, user equipment, soft terminals, etc., may also be chips or systems on chips, etc. located on the terminal equipment.

The apparatus 30 may include a processor 31 (ie, an example of a processing module) and a memory 32 . The memory 32 is used for storing instructions, and the processor 31 is used for executing the instructions stored in the memory 32, so that the apparatus 30 implements the steps performed by the terminal device in the method corresponding to FIG. 5 or FIG. 6 .

Further, the device 30 may further include an input port 33 (ie, an example of a transceiver module) and an output port 34 (ie, another example of a transceiver module). Further, the processor 31, the memory 32, the input port 33 and the output port 34 can communicate with each other through an internal connection path to transmit control and/or data signals. The memory 32 is used to store a computer program, and the processor 31 can be used to call and run the computer program from the memory 32 to control the input port 33 to receive signals, control the output port 34 to send signals, and complete the process of the terminal device in the above method. step. The memory 32 may be integrated in the processor 31 or may be provided separately from the processor 31 .

Optionally, if the communication device 30 is a communication device, the input port 33 is a receiver, and the output port 34 is a transmitter. The receiver and the transmitter may be the same or different physical entities. When they are the same physical entity, they can be collectively referred to as transceivers.

Optionally, if the communication device 30 is a chip or a circuit, the input port 33 is an input interface, and the output port 34 is an output interface.

As an implementation manner, the functions of the input port 33 and the output port 34 can be considered to be implemented by a transceiver circuit or a dedicated chip for transceiver. The processor 31 can be considered to be implemented by a dedicated processing chip, a processing circuit, a processor or a general-purpose chip.

As another implementation manner, a general-purpose computer may be used to implement the communication device provided by the embodiments of the present application. The program codes that will implement the functions of the processor 31 , the input port 33 and the output port 34 are stored in the memory 32 , and the general-purpose processor implements the functions of the processor 31 , the input port 33 and the output port 34 by executing the codes in the memory 32 .

Wherein, each module or unit in the communication apparatus 30 may be used to perform each action or process performed by a device (eg, terminal device) performing random access in the above method, and detailed description thereof is omitted here to avoid redundant description.

For the concepts related to the technical solutions provided by the embodiments of the present application involved in the apparatus 10, for explanations and detailed descriptions, and other steps, please refer to the descriptions of the foregoing methods or other embodiments, which will not be repeated here.

FIG. 10 is a schematic diagram of a communication apparatus 40 provided by an embodiment of the present application. As shown in FIG. 10 , the apparatus 40 may be an access node, including a network element having an access function for terminal equipment, such as a RAN.

The apparatus 40 may include a processor 41 (ie, an example of a processing module) and a memory 42 . The memory 42 is used for storing instructions, and the processor 41 is used for executing the instructions stored in the memory 42, so that the apparatus 40 implements the steps performed by the access node in the method corresponding to FIG. 5 or FIG. 6 .

Further, the device 40 may further include an input port 43 (ie, an example of a transceiver module) and an output port 44 (ie, another example of a transceiver module). Further, the processor 41, the memory 42, the input port 43 and the output port 44 can communicate with each other through an internal connection path to transmit control and/or data signals. The memory 42 is used to store a computer program, and the processor 41 can be used to call and run the computer program from the memory 42 to control the input port 43 to receive signals, control the output port 44 to send signals, and complete the process of the terminal device in the above method. step. The memory 42 may be integrated in the processor 41 or may be provided separately from the processor 41 .

Optionally, if the communication device 40 is a communication device, the input port 43 is a receiver, and the output port 44 is a transmitter. The receiver and the transmitter may be the same or different physical entities. When they are the same physical entity, they can be collectively referred to as transceivers.

Optionally, if the communication device 40 is a chip or a circuit, the input port 43 is an input interface, and the output port 44 is an output interface.

As an implementation manner, the functions of the input port 43 and the output port 44 can be considered to be realized by a transceiver circuit or a dedicated chip for transceiver. The processor 41 can be considered to be implemented by a dedicated processing chip, a processing circuit, a processor or a general-purpose chip.

As another implementation manner, a general-purpose computer may be used to implement the communication device provided by the embodiments of the present application. The program codes that will implement the functions of the processor 41 , the input port 43 and the output port 44 are stored in the memory 42 , and the general-purpose processor implements the functions of the processor 41 , the input port 43 and the output port 44 by executing the codes in the memory 42 .

The modules or units in the communication apparatus 40 may be used to perform actions or processing procedures performed by the random access device (ie, the access node) in the above method, and detailed descriptions thereof are omitted here to avoid repetition.

For the concepts related to the technical solutions provided by the embodiments of the present application involved in the apparatus 40, for explanations and detailed descriptions and other steps, please refer to the descriptions of the foregoing methods or other embodiments, which will not be repeated here.

It should be understood that, in this embodiment of the present application, the processor may be a central processing unit (CPU, central processing unit), and the processor may also be other general-purpose processors, digital signal processors (DSP, digital signal processors), dedicated integrated Circuit (application specific integrated circuit, ASIC), off-the-shelf programmable gate array (field programmable gate array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

It should also be understood that the memory in the embodiments of the present application may be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory. The non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically programmable read-only memory (EPROM). Erase programmable read-only memory (electrically EPROM, EEPROM) or flash memory. Volatile memory may be random access memory (RAM), which acts as an external cache. By way of example and not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), Synchronous DRAM (SDRAM), Double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous link dynamic random access memory (synchlink DRAM, SLDRAM) and direct Memory bus random access memory (direct rambus RAM, DR RAM).

Embodiments of the present application further provide a computer-readable storage medium, on which computer instructions for implementing the method executed by the terminal device or the method executed by the network device in the foregoing method embodiments are stored.

For example, when the computer program is executed by a computer, the computer can implement the method executed by the terminal device or the method executed by the network device in the above method embodiments.

Embodiments of the present application further provide a computer program product including instructions, which, when executed by a computer, cause the computer to implement the method executed by the terminal device or the method executed by the network device in the above method embodiments.

An embodiment of the present application further provides a communication system, where the communication system includes the network device and the terminal device in the above embodiments, the network device is configured to receive a first request message and send a first response message, and the terminal device is configured to generate a A random access identifier, sending the first request message and receiving the first response message, wherein both the first request message and the first response message include the random access identifier, and the length of the random access identifier is greater than the length of the random access identifier The length of the temporary mobile subscriber identity of the terminal device, where the length of the temporary mobile subscriber identity is greater than or equal to 64 bits.

The above embodiments may be implemented in whole or in part by software, hardware, firmware or any other combination. When implemented in software, the above-described embodiments may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions or computer programs. When the computer instructions or computer programs are loaded or executed on a computer, all or part of the processes or functions described in the embodiments of the present application are generated. The computer may be a general purpose computer, special purpose computer, computer network, or other programmable device. The computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be downloaded from a website site, computer, server, or data center Transmission to another website site, computer, server or data center by wire (eg, infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server, a data center, or the like that contains one or more sets of available media. The usable media may be magnetic media (eg, floppy disks, hard disks, magnetic tapes), optical media (eg, DVDs), or semiconductor media. The semiconductor medium may be a solid state drive.

It should be understood that the term "and/or" in this document is only an association relationship to describe associated objects, indicating that there can be three kinds of relationships, for example, A and/or B, which can mean that A exists alone, and A and B exist at the same time , there are three cases of B alone. In addition, the character "/" in this document generally indicates that the related objects are an "or" relationship.

It should be understood that, in various embodiments of the present application, the size of the sequence numbers of the above-mentioned processes does not mean the sequence of execution, and the execution sequence of each process should be determined by its functions and internal logic, and should not be dealt with in the embodiments of the present application. implementation constitutes any limitation.

Those of ordinary skill in the art can realize that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each particular application, but such implementations should not be considered beyond the scope of this application. Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the above-described systems, devices and units may refer to the corresponding processes in the foregoing method embodiments, which will not be repeated here. In the several embodiments provided in this application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the apparatus embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented. On the other hand, the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution in this embodiment. In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit. The functions, if implemented in the form of software functional units and sold or used as independent products, may be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application can be embodied in the form of a software product in essence, or the part that contributes to the prior art or the part of the technical solution. The computer software product is stored in a storage medium, including Several instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage medium includes: a U disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk and other mediums that can store program codes.

The above are only specific embodiments of the present application, but the protection scope of the present application is not limited to this. should be covered within the scope of protection of this application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims (27)

A method for random access, comprising: The terminal device generates a random access identifier, and the random access identifier is used to identify the terminal device in the random access process; sending, by the terminal device, a first request message to the access node, where the first request message includes the random access identifier, and the first request message is used to request access to the wireless network in the random access process; receiving, by the terminal device, a first response message from the access node, where the first response message includes the random access identifier; Wherein, the length of the random access identifier is less than the length of the temporary mobile user identifier of the terminal device, and the length of the temporary mobile user identifier is greater than or equal to 64 bits. The method according to claim 1, wherein the method further comprises: sending, by the terminal device, a radio resource control RRC connection establishment complete message to the access node; Wherein, the RRC connection establishment complete message includes a serving temporary mobile user identity of the terminal device, and the serving temporary mobile user identity includes the temporary mobile user identity and the identity of the first access management node. The method according to claim 1, wherein generating the random access identifier by the terminal device comprises: The terminal device generates the random access identifier according to the temporary mobile user identifier; or, The terminal device generates the random access identifier through a specific algorithm according to the first globally unique temporary user identifier, and the composition structure of the first globally unique temporary user identifier includes the temporary mobile user identifier; or, The terminal device generates a random number as the random access identifier. The method according to claim 3, wherein the generating, by the terminal device, the random access identifier according to the temporary mobile user identifier comprises: generating the random access identifier according to the temporary mobile user identifier and a specific algorithm; or, The random access identifier is generated according to the identifier of the first access management node, the temporary mobile user identifier and a specific algorithm. The method according to any one of claims 1 to 4, wherein the method further comprises: The terminal device sends a registration request message to the access node, where the registration request message includes a first globally unique temporary user identifier, and the first globally unique temporary user identifier is allocated by the first access management node. The method according to any one of claims 1 to 5, wherein after the terminal device sends a registration request message to the access node, the method further comprises: Receive a registration acceptance message from the access node, where the registration acceptance message includes a second globally unique temporary user identity, and the second globally unique temporary user identity is accessed by the first access management node or the second access node management node allocation; Wherein, the second globally unique temporary user identifier is different from the first globally unique temporary user identifier, and the first access management node is different from the second access management node. A method for random access, comprising: The access node receives a first request message from the terminal device, where the first request message is used to request access to the wireless network in the random access process, the first request message includes a random access identifier, and the random access The entry identifier is used to identify the terminal equipment in the random access process; sending, by the access node, a first response message to the terminal device, where the first response message includes the random access identifier; Wherein, the length of the random access identifier is less than the length of the temporary mobile user identifier of the terminal device, and the length of the temporary mobile user identifier is greater than or equal to 64 bits. The method according to claim 7, wherein the method further comprises: The access node receives a radio resource control RRC connection establishment complete message from the terminal device, the RRC connection establishment complete message includes a serving temporary mobile subscriber identity, and the serving temporary mobile subscriber identity includes the temporary mobile subscriber identity and the identity of the first access management node, the serving temporary mobile user identity is allocated by the first access management node; The access node selects a second access management node for the terminal device according to the serving temporary mobile subscriber identity. The method according to claim 8, wherein after the access node receives the RRC connection establishment complete message from the terminal device, the access node identifies the terminal as the terminal according to the serving temporary mobile user identifier The device selects the second access management node, and further includes: generating, by the access node, a first identity according to the serving temporary mobile subscriber identity; When the first identifier is the same as the random access identifier, the access node selects a second access management node for the terminal device. The method according to claim 9, wherein the generating, by the access node, the first identity according to the serving temporary mobile subscriber identity, comprises: generating the first identifier according to the temporary mobile user identifier and a specific algorithm; or, The first identification is generated according to the identification of the first access management node, the temporary mobile user identification and a specific algorithm. The method according to any one of claims 8 to 10, wherein the method further comprises: receiving, by the access node, a registration request message from the terminal device; The access node sends the registration request message to the service access management node, where the registration request message includes a first globally unique temporary user identifier, and the first globally unique temporary user identifier is created by the first globally unique temporary user identifier. The access management node is allocated for the terminal device. The method according to claim 11, wherein the method further comprises: receiving, by the access node, a registration accept message from the second access management node; sending, by the access node, the registration acceptance message to the terminal device; Wherein, the registration acceptance message includes a second globally unique temporary user identifier, and the second globally unique temporary user identifier is allocated for the terminal device by the second access management node; Wherein, the second globally unique temporary user identifier is different from the first globally unique temporary user identifier. A device for random access, comprising: a processing module, configured to generate a random access identifier, where the random access identifier is used to identify the terminal device in the random access process; a transceiver module, configured to send a first request message to an access node, where the first request message includes the random access identifier, and the first request message is used to request access to a wireless network in a random access process; The transceiver module is further configured to receive a first response message from the access node, where the first response message includes the random access identifier; Wherein, the length of the random access identifier is less than the length of the temporary mobile user identifier, and the length of the temporary mobile user identifier is greater than or equal to 64 bits. The device according to claim 13, wherein the transceiver module is further configured to: sending a radio resource control RRC connection establishment complete message to the access node; Wherein, the RRC connection establishment complete message includes a serving temporary mobile user identity of the terminal device, and the serving temporary mobile user identity includes the temporary mobile user identity and the identity of the first access management node. The device according to claim 13, wherein the processing module is specifically configured to: generating the random access identifier according to the temporary mobile user identifier; or, The random access identifier is generated by a specific algorithm according to the first globally unique temporary user identifier, and the composition structure of the first globally unique temporary user identifier includes the temporary mobile user identifier; or, A random number is generated as the random access identifier. The device according to claim 15, wherein the processing module is further configured to: generating the random access identifier according to the temporary mobile user identifier and a specific algorithm; or, The random access identifier is generated according to the identifier of the first access management node, the temporary mobile user identifier and a specific algorithm. The device according to any one of claims 13 to 16, wherein the transceiver module is further configured to: Send a registration request message to the access node, where the registration request message includes a first globally unique temporary user identifier, and the first globally unique temporary user identifier is allocated by the first access management node. The device according to any one of claims 13 to 17, wherein the transceiver module is further configured to: Receive a registration acceptance message from the access node, where the registration acceptance message includes a second globally unique temporary user identity, and the second globally unique temporary user identity is accessed by the first access management node or the second access node. management node allocation; Wherein, the second globally unique temporary user identifier is different from the first globally unique temporary user identifier, and the first access management node is different from the second access management node. A device for random access, comprising: a transceiver module, configured to receive a first request message from a terminal device, where the first request message is used to request access to a wireless network in a random access process, the first request message includes a random access identifier, the The random access identifier is used to identify the terminal equipment in the random access process; The transceiver module is further configured to send a first response message to the terminal device, where the first response message includes the random access identifier, Wherein, the length of the random access identifier is less than the length of the temporary mobile user identifier of the terminal device, and the length of the temporary mobile user identifier is greater than or equal to 64 bits. The apparatus of claim 19, wherein: The transceiver module is further configured to receive a radio resource control RRC connection establishment complete message from the terminal device, where the RRC connection establishment complete message includes a serving temporary mobile user identity, and the serving temporary mobile user identity includes the temporary mobile user identity. a mobile user identity and an identity of a first access management node, the serving temporary mobile user identity is allocated by the first access management node; and a processing module, configured to select a second access management node for the terminal device according to the service temporary mobile user identity. The device according to claim 19, wherein the processing module is further configured to: generating a first identity according to the service temporary mobile user identity; When the first identifier is the same as the random access identifier, the access node selects a second access management node for the terminal device. The device according to claim 21, wherein the processing module is further configured to: generating the first identifier according to the temporary mobile user identifier and a specific algorithm; or, The first identification is generated according to the identification of the first access management node, the temporary mobile user identification and a specific algorithm. The device according to any one of claims 19 to 22, wherein the transceiver module is further configured to: receiving a registration request message from the terminal device; Send the registration request message to the second access management node, where the registration request message includes a first globally unique temporary user identifier, and the first globally unique temporary user identifier is set by the first access management node as assigned by the terminal device. The device according to claim 23, wherein the transceiver module is further configured to: receiving a registration accept message from the second access management node; sending the registration acceptance message to the terminal device; Wherein, the registration acceptance message includes a second globally unique temporary user identifier, and the second globally unique temporary user identifier is allocated for the terminal device by the second access management node; Wherein, the second globally unique temporary user identifier is different from the first globally unique temporary user identifier. A communication device, comprising: processor and memory; the memory for storing computer programs; the processor for executing the computer program stored in the memory, so that the communication device executes the communication method according to any one of claims 1 to 6, or executes any one of claims 7 to 12 the described communication method. A computer-readable storage medium, characterized in that a computer program is stored on the computer-readable storage medium, and when the computer program runs on a computer, the computer is made to execute any one of claims 1 to 6. The communication method described in item 7, or the communication method according to any one of claims 7 to 12 is performed. A chip system, characterized by comprising: a processor for calling and running a computer program from a memory, so that a communication device installed with the chip system executes the communication according to any one of claims 1 to 6 method, or perform a communication method as claimed in any one of claims 7 to 12.

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