57 results about "Protocol entity" patented technology

The invention relates to a protocol fuzz testing method and system based on a long-life-cycle enumeration variable state. The method comprises the following steps: S1, a static enumeration declaration statement instrumentation analysis stage; s2, a short life cycle enumeration variable dynamic analysis stage; s3, a static assignment statement instrumentation analysis stage; and S4, a fuzzy test stage. The system comprises a static analysis module, a dynamic analysis module, a network IO module and a variation feedback module. According to the method, the source code of the protocol entity program to be tested is statically analyzed to capture distribution and use of enumeration type variables in the source code. State transition is represented by monitoring changes of enumeration variable value domains, and a corresponding state tree structure is constructed, so that stateful grey box fuzz testing is carried out on any protocol entity program to be tested under the condition that extra manual analysis is not needed.

Systems, methods, apparatuses, and computer program products for network coding are provided. One method may include receiving, at a second packet data convergence protocol (PDCP) entity, one or more original packet data convergence protocol (PDCP) protocol data units (PDUs) from a first PDCP entity for a radio bearer. The method may also include coding, at the second packet data convergence protocol (PDCP) entity, the original packet data convergence protocol (PDCP) protocol data units (PDUs) to produce one or more network coded packet data convergence protocol (PDCP) protocol data units (PDUs).

The invention relates to a protocol fuzz testing method and system based on multi-dimensional feedback information, and the method comprises the steps: carrying out the preprocessing of a target protocol entity program, and carrying out the testing preparation; performing a fuzzy test; the fuzzy testing process comprises a selection field variation stage and a variation field cost probability calculation stage for multi-dimensional feedback information processing; obtaining test result information, and feeding back the result information. The system comprises a test preparation module, a fuzzy test module and a result information feedback module. Multi-dimensional feedback information processing is carried out through the selection field variation stage and the variation field cost probability calculation stage, code space coverage of protocol fuzz testing is remarkably improved, more potential vulnerabilities are revealed, testing efficiency is greatly improved, under limited resources, testing is concentrated on a path which is most likely to cause collapse, and the testing efficiency is greatly improved. Therefore, the detection quality and speed are improved.

A user equipment (UE) is configured for wireless communication. The UE is configured to receive a first data unit set in a first protocol entity. The first protocol entity is configured as a non-signaling radio bearer. The UE is configured to start a timer in response to receiving a first data unit. The first data unit is a data unit in the first data unit set. The UE is configured to generate a second data unit set based on the first data unit in the first data unit set. The UE is configured to send, in response to determining that the timer is expired, an indication to a second protocol entity. The indication is an indication to discard the second data unit set. A protocol layer in which the first protocol entity is located is above a protocol layer in which the second protocol entity is located.

The invention relates to a stateful protocol fuzzy test method and system based on response information. The method comprises the following steps: S1, a preprocessing stage; S2, a fuzzy test stage; s3, a state selection stage; and S4, a seed scheduling stage. The system comprises a test preparation module, a fuzzy test module, a state selection module and a seed scheduling module. According to the method, the source code of the protocol entity program to be tested is statically analyzed to capture distribution and use of enumeration type variables in the source code. According to the method, the response result information of the tested program is analyzed, the response header field is extracted, on the basis that the response code represents the state, the state is further subdivided, the states represented by a plurality of same state codes in the same seed are effectively distinguished, and the detection accuracy is improved. And the seed value and the variation position are adjusted by using the response header field information reaching the target state and the coverage rate information, so that the code coverage rate of the stateful protocol fuzz test is remarkably improved, more vulnerabilities are found, and the fuzz test efficiency is greatly improved.

The invention provides a communication method, device and system, and belongs to the technical field of communication. The method comprises: a first network device sending first information to the terminal device, the first information comprising first configuration information and first indication information, the first information being used for indicating to add a second network device, the first indication information being used for indicating that a first radio bearer is also associated with a first functional unit, the first function unit is used for processing data corresponding to the first network device, and the second function unit is used for processing data corresponding to the second network device. In the auxiliary station adding process of the terminal equipment, the original function unit can be kept not released, and a new function unit can be configured. Both the original function unit and the new function unit can perform data transmission, so that the data transmission of the radio bearer is maintained, and the rate reduction in the process of reestablishing the protocol entity by the terminal equipment is avoided.

The invention discloses a data transmission method and device, equipment and a storage medium. The method comprises the following steps: a network interconnection protocol (IP) entity of the terminal generates a first message; the first message carries addresses of a plurality of relay servers used for receiving data carried by the first message; the IP entity of the terminal sends the first message to a service data adaptation protocol (SDAP) entity of the terminal; the SDAP entity of the terminal generates an SDAP protocol data unit (PDU) based on the first message; and sending the SDAP PDU to a network device, so that the network device forwards data corresponding to the first message to the plurality of relay servers by using the addresses of the plurality of relay servers.

A method for a user equipment (UE) to perform a dual active protocol stack (DAPS) handover in a wireless communication system, comprising: receiving a radio resource control (RRC) reconfiguration message including DAPS configuration information from a source base station, the DAPS configuration information indicating at least one bearer for the DAPS handover; reconfiguring a packet data convergence protocol (PDCP) entity corresponding to at least one bearer for the DAPS handover for the DAPS handover; and establishing a protocol entity for a target cell corresponding to at least one bearer for the DAPS handover.

Various solutions to support aggregation of user equipments (UEs) with non-3GPP connections in mobile communications are described. The remote UE may connect with the relay UE using a non-3GPP connection. A remote UE may receive a radio resource control (RRC) message from a network node of a wireless network. The RRC message includes a configuration of a non-3GPP connectivity (N3C) indirect path between the remote UE and the network node through the relay UE. The remote UE performs one or more first data transmission or reception on the N3C indirect path according to the configuration. The first data transmission or reception on the N3C indirect path is made over a connection of the non-3GPP connection between a first protocol entity in the remote UE and a second protocol entity in the relay UE.

The application introduces coverage feedback to guide the protocol fuzzing process on the basis of the protocol fuzzing technology based on syntax generation, aims to provide a method to solve the problem of blind variation when generating new test cases by the existing protocol fuzzing technology based on generation. Mainly includes the following stages: test preparation stage. The protocol entity program to be tested is deployed locally, and the data model set of the protocol to be tested is defined as the input of the fuzzing test stage. Fuzzing test stage. The relationship learning stage and the combination variation stage are included. The relationship learning stage: learning the correlation between the main variation field and other variable fields in the same data model. The combination variation stage: combination variation of the main variation field under the guidance of the relationship table. Result information feedback stage. The number of times of triggering the protocol entity program to crash and the coverage information are fed back in real time during the fuzzing test process. The application has the advantages of high test efficiency and high coverage.

Disclosed are a method for establishing a signaling bearer, a method for transmitting a signaling, a base station, and a storage medium, the method for establishing a signaling bearer comprising: a base station establishing a first bearer on a user plane protocol entity; wherein the first bearer is used for transmitting NAS signaling related to session management between the base station and a first network function.

A method for fast handover recovery of a receiving data link layer protocol entity, such as a receiving packet data convergence protocol (PDCP) entity, is provided. A method performed by a receiving data link layer protocol entity includes the step of delivering a plurality of data packets to a receiving high layer transport protocol entity. Moreover, the method comprises the step of re-delivering a selected number of last delivered data packets of the plurality of data packets to the receiving higher layer transport protocol entity a number of times during a handover process.

The invention relates to a stateful protocol fuzzy test method based on an uncovered edge. The method comprises the following steps: S1, program preprocessing; s2, performing fuzzy testing on the seeds; s3, state selection; and S4, seed scheduling. The system comprises a test preparation module, a fuzzy test module, a state selection module and a seed scheduling module. According to the method, the source code of the protocol entity program to be tested is statically analyzed to capture distribution and use of enumeration type variables in the source code. According to the method, potential benefits of a seed in different fuzzy states are evaluated by analyzing code block information which is not explored by a fuzzifier on a program control flow chart, and state information triggered by the seed is analyzed, so that the fuzzifier selects a state and a seed which are easier to cover a new program branch; and the overall vulnerability detection efficiency of the fuzzy test system is maximized.

This disclosure proposes a communication method, communication device, communication system, and storage medium. The method includes: sending a PDCP protocol data unit (PDU) using a first packet data fusion protocol (PDCP) entity of the first device. The PDCP PDU is used to indicate at least one of the following: the relevant configuration of a first function of the first PDCP entity, and the relevant configuration of a first field in the PDCP packet header corresponding to the first PDCP entity. The method of this disclosure ensures communication performance and communication efficiency.

Techniques provided herein select an operating mode from a plurality of operating modes. Various implementations establish a radio bearer with at least one network entity over a network using a first Radio Link Control (RLC) protocol entity and a second RLC protocol entity. Various implementations determine whether packet duplication is enabled for the radio bearer by processing Packet Data Convergence Protocol (PDCP) configuration settings. In response to determining that packet duplication is enabled, various implementations duplicate uplink data packets over the network by submitting the uplink data packets to both the first RLC protocol entity and the second RLC entity. In response to determining that packet duplication is disabled and split bearer is enabled, various implementations select one of the first RLC protocol entity and the second RLC protocol entity for uplink data packet transmission.

The present disclosure discloses a method and apparatus for determining a hyperframe number (HFN) for a Packet Data Convergence Protocol (PDCP) entity, applicable to the field of communications technology. The method, configured to be executed by a terminal device, includes: receiving indication information sent by a network device, wherein the indication information includes hyperframe number (HFN) information; and determining the HFN value of the Packet Data Convergence Protocol (PDCP) entity based on the HFN information. This allows the terminal device and the network device to maintain a consistent understanding of the HFN value, avoiding data decryption failures or integrity verification failures and improving data transmission reliability.

The embodiment of the present application provides a transmission method and device, which is applied to a terminal device, and the terminal device is connected to a main base station and a first secondary base station respectively, including: receiving a main and secondary cell update instruction sent by the main base station, and the main and secondary cell update instruction includes an identifier of a second secondary base station; according to the identifier of the second secondary base station, establishing a first protocol entity that associates a data radio bearer DRB with the second secondary base station; receiving first downlink data sent by the second secondary base station according to the first protocol entity, and receiving second downlink data sent by the first secondary base station according to the second protocol entity, wherein the second protocol entity is a protocol entity that associates DRB with the first secondary base station; merging the first downlink data and the second downlink data to obtain a packet data convergence protocol PDCP data packet corresponding to the DRB. The embodiment of the present application can realize DAPS switching in a dual connection scenario and improve the performance of data transmission.

An apparatus comprises: at least one processor; and at least one memory comprising computer program code, the at least one memory and the computer program code being configured to, together with the at least one processor, cause the apparatus to at least: determine that a packet data unit from a higher protocol layer entity is associated with a risk of a time-to-live violation; and select between one or more first lower data protocol entities and one or more second lower protocol layer entities to process a protocol packet data unit.

The present disclosure describes methods, system, and devices for receiving multicast and broadcast service (MBS) data by a group of second ends from a first end. One method includes receiving, by a second packet data convergence protocol (PDCP) entity at a second end, the MBS data from a first PDCP entity at the first end. Another method includes receiving, by a second acknowledge mode (AM) point-to-multipoint (PTM) radio link control (RLC) entity at a second end, the MBS data from a first AM PTM RLC entity at the first end. Another method includes receiving, by a second end, a piece of information sent from the first end, wherein the piece of information comprises at least one of the following: a first service identity indicating a MBS service or session in RAN, an indication on whether hybrid automatic repeat request (HARQ) feedback is enabled or disabled.

The application discloses a kind of extensible stateful protocol entity program logic vulnerability detection method and system.Test preparation stage: locally deploying the entity program to be tested, a script file describing the traffic message of the stateful protocol to be tested and its corresponding message type is used as input;State machine learning stage: select input symbol from script file and map to corresponding message message, then fuzz it to generate test case;And judge whether the test case still belongs to the symbol, yes, send to the program to be tested for execution, otherwise modify;Collect the response message after the execution of the program to be tested, and map to the corresponding output symbol, use model learning to build a minimum deterministic Mealy state machine corresponding to the protocol entity program to be tested;Result arrangement and analysis stage, the result state machine obtained by learning is pruned and processed.The application is suitable for the detection of logic vulnerability of stateful protocol entity program, and has strong scalability, high vulnerability detection efficiency.

This invention discloses a minimal recursive delegated communication method and system, belonging to the field of computer network communication. The system contains only two protocol primitives, `register` and `push`, and achieves complete dynamic discovery and task delegation functions through delegated interaction between gateway entities and protocol entities. The gateway entity is deconstructed into three protocol entities: server, brain, and agent. It supports topology reversal where the gateway itself is employed by a higher-level gateway as a protocol entity, achieving infinite recursion and indistinguishability of the delegate chain. The method employs a three-layer abstraction system (L0 / L1 / L2) to separate protocol specifications, extension mechanisms, and application semantics, allowing for the emergence of organizational forms such as bureaucracy and market mechanisms through replaceable employment decision rules. This invention demonstrates the minimal completeness of delegated networks and is applicable to scenarios such as AI multi-agent collaboration, IoT device management, and social organization simulation.

The invention discloses an industrial control network protocol security detection method based on fuzzy testing, and belongs to the technical field of detection. According to the method disclosed by the invention, the protocol information is reversely deduced through the captured network flow during protocol entity communication, and the fuzzy test case is automatically constructed, so that industrial control protocol security detection is realized; under the condition that protocol priori knowledge does not need to be mastered, sequence alignment is conducted on original data through sequence comparison and sequence alignment algorithms, protocol information and a state machine model are deduced through similarity calculation, and the problem of obtaining protocol feature information needed by industrial control protocol fuzz test case generation is solved; a random generation strategy and a data variation strategy are combined to automatically and rapidly generate a paste test case, a large number of variation random inputs are sent to a tested target, behavior actions of the tested target are analyzed to achieve safety detection of an industrial control protocol, the problem that an existing fuzzy test method depends on manual single-field random filling to generate test data, and the efficiency is low is solved, and the test efficiency is improved. And the test accuracy is ensured.

The embodiment of the invention provides a packet data convergence protocol entity establishment device and method and a packet data convergence protocol entity indication device and method. The method comprises: mapping a QoS flow to at least one data radio bearer, the QoS flow comprising at least one sub-QoS flow, one sub-QoS flow corresponding to one data radio bearer; and establishing at least one corresponding packet data convergence protocol (PDCP) entity for the at least one data radio bearer, the at least one packet data convergence protocol (PDCP) entity sharing the first information. Therefore, QoS distinguishing can be carried out on PDU.Set with different importance in the QoS flow based on the sub QoS flow, and the consistency of the QoS flow in different PDCP entities can be ensured.

The invention provides a heterogeneous device multi-protocol adaptive access method and device based on an association graph. The method provided by the invention comprises the following steps: acquiring heterogeneous device data and protocol data; constructing a first layer of nodes by a heterogeneous device entity, constructing a second layer of nodes by a protocol entity, and determining map nodes of an upper layer and a lower layer; traversing the first layer of nodes, and determining a connection relationship between the heterogeneous device entity corresponding to each node and the protocol entity corresponding to the second layer of nodes; traversing the second layer of nodes, determining the connection relationship between the protocol entities corresponding to each node, and completing the construction of the association graph; and determining a target protocol matched with the to-be-accessed target heterogeneous device based on the association graph, and accessing the target heterogeneous device based on the target protocol. The method and the device provided by the invention are used for realizing efficient and accurate protocol matching of heterogeneous equipment, solving the problems of low efficiency, poor adaptability and difficulty in knowledge reuse of a traditional method, and improving the automation and intelligence level of multi-protocol equipment access in an industrial field.

Provided are a communication method and communication devices. The communication method comprises: a first protocol layer sending a first data packet to a first protocol entity or a second protocol entity on the basis of a first condition, wherein the first protocol entity and the second protocol entity are located in a second protocol layer, transmission modes of the first protocol entity and the second protocol entity are different, and the first condition is associated with one or more of the following: the type of the first data packet, the remaining transmission time of the first data packet, the amount of data to be transmitted of the first protocol entity, a QoS attribute of the first data packet, information of a data set to which the first data packet belongs, and association relationships between the first data packet and other data packets.

The present invention relates to a stateful protocol fuzz testing method and system based on path and response code conversion, and the method comprises the following steps: S1: entering the test preparation phase, deploying the entity program of the protocol to be tested locally, and defining the state model set of the protocol to be tested as the input of the fuzz testing phase; S2: entering the fuzz testing phase, including the message analysis phase in the fuzz testing phase, and performing detection and analysis on the message; S3: entering the result information feedback phase, including the repair feedback phase in the result information feedback phase, and the repair feedback phase is responsible for processing the variation of the tested message and repairing it; the system comprises a pile compilation module, a byte detection module, a repair feedback module and a network IO execution module. The present invention detects and iteratively learns the structure of the tested message under an acceptable overhead, optimizes the dynamic energy adjustment of the seed variation bytes, thereby improving the overall fuzz testing efficiency.

This invention discloses a method for monitoring the status of high-voltage outgoing line switchgear based on 5G wireless communication. The method is executed by a first protocol entity of a mobile terminal and includes: receiving a data unit; parsing the data unit to obtain a first data sub-unit and a second data sub-unit; determining a second protocol entity instance corresponding to a first channel identifier; determining a first delivery priority of the first data sub-unit and a second delivery priority of the second data sub-unit based on priority adjustment conditions; and delivering the first data sub-unit and the second data sub-unit to the second protocol entity instance based on the first delivery priority and the second delivery priority. This invention can achieve priority delivery of alarm-type sub-data in scenarios with the same channel identifier and the same second protocol entity instance, reducing the latency of abnormal information processing and improving the real-time performance and reliability of high-voltage outgoing line switchgear status monitoring.

An embodiment of the present application provides a method and apparatus for fuzz testing of unknown protocols. The method includes: obtaining traffic packets of an unknown protocol and a protocol entity corresponding to the unknown protocol; obtaining keywords in the traffic packets; obtaining multiple protocol states and their corresponding multiple status packets according to the keywords; obtaining a protocol state transition diagram according to the multiple protocol states; and performing fuzz testing on the protocol entity according to the protocol state transition diagram to obtain a test result. Implementing the embodiments of the present application can improve the test accuracy rate and be applicable in various network communication systems with high applicability.

This invention relates to a protocol fuzzing method and system based on the states of long-lifecycle enumerated variables. The method includes the following steps: S1: Static enumeration declaration statement instrumentation analysis stage; S2: Short-lifecycle enumeration variable dynamic analysis stage; S3: Static assignment statement instrumentation analysis stage; S4: Fuzzing stage. The system includes a static analysis module, a dynamic analysis module, a network I / O module, and a mutation feedback module. This invention captures the allocation and use of enumeration type variables in the source code of the protocol entity program under test through static analysis. State transitions are characterized by monitoring changes in the value range of these enumeration variables, and a corresponding state tree structure is constructed, thereby enabling stateful gray-box fuzzing of any protocol entity program under test without additional manual analysis.

This application provides a data transmission method and a communication apparatus, and relates to the communication field. In the method, a transmitting end may sequentially deliver k consecutive PDU sets to m protocol entities in a first sequence, and sequentially send the k PDU sets. When k>m, k−m consecutive PDU sets starting from the (m+1)th PDU set in the k PDU sets are sequentially delivered to the m protocol entities in the first sequence, priorities of the m protocol entities are different from each other, and m>1.