182 results about "Protocol entity" patented technology

The present invention permits the transmission of variable size PDUs using a Hierarchical Sequence Numbering Space approach that supports ARQ protocols in a variable transmission rate environment. Some of the key attributes of this scheme are: (1) Support for arbitrarily variable PDU sizes; (2) Variable length sequence numbers in protocol headers; (3) Variable depth sequence numbers in protocol headers; (4) Dynamic sequence number context to minimize the size of sequence numbers transmitted in PDUs; (5) Protocol control schemes to coordinate and communicate sequence number space information between peer protocol entities; and (6) Data structures and approaches for the efficient implementation of Hierarchical Sequence Number Space schemes.

A method, system and transmitting side protocol entity is disclosed for sending packet data units for unacknowledged mode services in a mobile communication network. A retransmission parameter is set to a desired value in order to prevent retransmission of packet data units in a handover situation. The transmitting side acknowledged mode radio link control entity purges from the retransmission buffer based on status reports from a user equipment The packet data units that have been acknowledged by user equipment. A status report includes the sequence number of the highest packet data unit expected by the user equipment, and therefore the status report indicates the sequence number of the radio link control packet data units that have been received at the user equipment (either correctly or incorrectly). All the remaining packet data units in the retransmission buffer are scheduled for transmission and transmitted to the new node.

A method and apparatus for establishing a radio bearer of a point-to-multipoint multimedia service by utilizing a reference configuration of radio bearer parameters for quickly establising a radio bearer when a mobile terminal moves between cells. By configuring radio bearer parameters for a specific point-to-multipoint service by utilizing a reference configuration such that the same, or equal value, protocol and channel parameters are set for each cell, different cells in a communication system in which a specific point-to-point service is provided are able to configure the radio protocol entities, channels, and radio bearer at the same time by utilizing the same parameter values, thereby minimizing delay in establishing a radio bearer and minimizing data loss occurring during handover, conserving network resources, and enhancing reception performance via soft combining.

The present invention relates to a base station arrangement (20) in a communications system supporting high speed packet data communication, comprising a base station protocol entity for a protocol handling high speed control signalling and physical resource allocation for high speed data communication, quality handling means (27) adapted to receive and handle channel condition related information from mobile user stations, encoding means for encoding data packets to be transmitted to mobile user station, and transmission control means comprising a scheduling means (28) communicating with a hybrid automatic retransmission system (HARQ) (221, . . . , 22n) and being adapted to control transmission of data packets using said channel condition related information and data packet buffering means (231, . . . , 23n). The base station protocol entity further comprises a control plane entity supporting an extended control plane for control plane signalling messages comprising specific control messages handling means (26), adapted to provide a specific probing or information control message and to send said message to a mobile user station.

Modifications to the spanning tree algorithm allow bad news to propagate quickly by providing that protocol entities on bridges process inferior information sent by the designated bridge for each LAN. In addition, bridges use per port hello timers to stimulate information propagation, setting it to suit local link characteristics. No changes to the format of bridge protocol data units (BPDUs) as specified in the IEEE Standard 802.1D are required, and the algorithm for computing the topology of the network remains unchanged. Techniques have been adopted for expiring information and recomputing the spanning tree upon detection of link failure, upon receipt of a message having a message age greater than its accompanying maximum age, or if the port hello time algorithm detects a loss of link. Rules for propagating information are provided allowing rapid propagation of changes. Finally, techniques for burning out information in a configuration message are adopted.

A security protocol entity (20) is provided that includes a mechanism for enabling a first party (11) to communicate securely with a second party (60) through an access-controlling intermediate party (13) by nesting within a first security session (64) established with the intermediate party (13) a second security session (65) with the second party (60). The protocol data units, PDUs, associated with the second security session (65) are encapsulated in PDUs associated with the first security session (64) when sent out by the first party, the intermediate party extracting the encapsulated PDUs for sending on to the second party (possibly with a change to the destination address included in the PDU to be sent on). Each PDU includes a message type field explicitly indicating to the intermediate party (13) if a received PDU encapsulates another PDU intended to be sent on. The establishment of a security session between two parties is made dependent on each party proving by attribute certificates that it has certain attributes required of it by the other party. Where the intermediate party (13) fronts for the second party (60) and the first party (11) initially contacts the intermediate party in the belief that it is the second party, then the latter will indicate its relay status to the first party which can then request the intermediate party (13) to permit a tunnel to be established through it to the second party (60). The first party may place different attribute requirements on the intermediate party in its tunnel role to those initially expected of it when the first party thought it was the second party.

Aspects of a system for physical layer aggregation may include one or more switch ICs and / or physical (PHY) layer ICs that enable reception of data packets via a medium access control (MAC) layer protocol entity. Each of the received data packets may be fragmented into a plurality of fragment payloads. Each of the plurality of fragment payloads may be sent to a PHY layer protocol entity instance a physical layer protocol entity instance selected from a plurality of physical layer protocol entity instances.

The present invention discloses a method for acquiring a Packet Data Convergence Protocol (PDCP) status report and a packet data convergence protocol entity. The method comprises the steps of: a PDCP entity transmitting to an opposite PDCP entity a PDCP Protocol Data Unit (PDU) used to request the transmission of a PDCP status report; and the PDCP entity receiving the PDCP status report which is transmitted from the opposite PDCP entity according to the PDCP PDU. By the present invention, the quality of service and the performance of the wireless communication system are improved.

Aspects of the subject matter described herein relate to silently recording communications. In aspects, data associated with a request to establish a communication is modified to cause the communication to be established via a path that includes a recording agent. Modification may include, for example, adding, changing, and / or deleting data within the data. The data as modified is then passed to a protocol entity that uses the data to establish a communication session. Because of the way in which the data has been modified, the protocol entity selects a path that includes the recording agent. The recording agent is then able to silently record the communication.

A method of improving reset of an evolved media access control (MAC-ehs) protocol entity for a user equipment of a wireless communications system is disclosed. The MAC-ehs entity includes a plurality of reordering queues and a plurality of reassembly entities. The method includes receiving a reset request for resetting the MAC-ehs entity, delivering all reordering packet data units (PDUs) stored in the plurality of reordering queues to the corresponding reassembly entities for performing a reassembly process to deliver complete upper layer PDUs to an upper layer entity, and discarding all PDU segments still existing in the plurality of reassembly entities.

Techniques for aggregating heterogeneous carriers in a wireless communication system are disclosed. A mobile device may receive a configuration for aggregating a plurality of component carriers including one or more cellular carriers and a wireless local area network (WLAN) carrier. The one or more cellular carriers may include LTE carriers, and aggregation may be performed at a sub-IP protocol layer of operation. In one aspect, protocol entities may be modified to perform quality of service determinations, carrier selection, traffic mapping, or the like, in view of the different capabilities and characteristics of the heterogeneous carriers in the carrier aggregation configuration.

A method, system and transmitting side protocol entity is disclosed for sending packet data units for unacknowledged mode services in a mobile communication network. A retransmission parameter is set to a desired value in order to prevent retransmission of packet data units in a handover situation. The transmitting side acknowledged mode radio link control entity purges from the retransmission buffer based on status reports from a user equipment. The packet data units that have been acknowledged by user equipment. A status report includes the sequence number of the highest packet data unit expected by the user equipment, and therefore the status report indicates the sequence number of the radio link control packet data units that have been received at the user equipment (either correctly or incorrectly). All the remaining packet data units in the retransmission buffer are scheduled for transmission and transmitted to the new node.

The invention discloses a method, transport layer protocol entity, device and system of transmitting data in a communications network. The method comprises opening and configuring a port of a transport layer protocol and determining a context profile for the port. The transport layer protocol entity sends data packets e.g. to the Internet Protocol layer according to the context profile.

The invention relates to the technical field of mobile communication and discloses a resource distribution method and device for a data radio bear (DRB). Particularly, the method includes the steps that firstly, a first control base station (CBS) determines resource configuration information for performing resource distribution on at least one DRB of UE through a first data base station (DBS); then a first resource distribution instruction carrying the determined resource configuration information is sent to the first DBS so that the first DBS can perform resource distribution on the DRB of the UE according to the resource configuration information. In this way, even if the first DBS does not have the function of a control plane, the first DBS can perform resource configuration on at least one protocol entity in the first DBS according to the resource configuration information carried in the received first resource distribution instruction sent by the first CBS, then it can be guaranteed that a data and signaling separation network effectively operates, and according to the QoS request of the DRB, resource configuration is effectively performed on the protocol entity in the DBS.

Aspects of a system for physical layer aggregation may include one or more switch ICs and / or physical (PHY) layer ICs that enable reception of data packets via a medium access control (MAC) layer protocol entity. Each of the received data packets may be fragmented into a plurality of fragment payloads. Each of the plurality of fragment payloads may be sent to a PHY layer protocol entity instance a physical layer protocol entity instance selected from a plurality of physical layer protocol entity instances.

The embodiment of the invention provides a data transmission method for an uplink chain in wireless communication. When MAC-es SDU needs to be cut and processed, an MAC-es SDU is cut by an MAC-es protocol entity of a terminal side; and HARQ is mixed and automatically retransmitted by the MAC-es protocol entity of the terminal side. The embodiment of the invention also provides a data transmission method for an uplink chain in wireless communication, which is as follows: receiving MAC-es PDU transmitted by the MAC-es protocol entity of a network side; detecting MAC-es SDU segment cut in MAC-es PDU by the MAC-es protocol entity of the network side; carrying out reordering, macro diversity and combination on the MAC-es PDU; carrying out segment package on the MAC-es SDU segment; and carrying out demux on the MAC-es SDU. By cutting and segment package, the invention can solve the problems that the MAC-es protocol entity of the terminal side only supports the sizes of several fixed and limited RLC PDU, and has no function of cutting the PLC PDU.

The invention provides a system and a method for executing protocol consistency test to a base station, wherein the system tests the base station in a world interoperable microwave access system based on TTCN-3 to ensure the consistency of a protocol entity realized by the test and the standard regulation regulated by the protocol. The invention adopts a structure constructed by a test background and a foreground proxy to test the base station, including: the test background used for analyzing and executing a coded TTCN-3 test use case and judging the test result, and the foreground proxy used for receiving and sending business data according to the requirements of the test background and sending control information to the base station. The invention realizes the protocol consistency test on the base station without the realization of physical layers such as a radio frequency module, and reduces the cost of the test system and improves the self-reliability of the test system, thereby achieving the purpose of saving cost and increasing the robustness of the test system.

A method for improving a reordering functionality in a wireless communications system comprises configuring a reset timer, utilized for controlling the reset of a reordering functionality of a protocol entity, reassembling all received protocol data units in the protocol entity with previously stored protocol data unit segments, and discarding all protocol data unit segments that cannot be reassembled in the protocol entity.

The invention relates to the fields of automation and data communication, in particular to an industrial Ethernet data communication method supporting real-time and non-real-time automatic application, and can solve the problem to achieve highly real-time communication of an industrial Ethernet in motion control. The method comprises that: when real-time data is generated in the real-time application process of an environmental protection agency (EPA) field device, the data enters a real-time channel, and a real-time data identifier is added at the tail of the whole data frame through the real-time channel; after receiving a real-time data message, the EPA field device begins to scan from the tail of the whole data frame and judges whether the real-time data identifier is identified as the real-time data, if so, the data frame is transmitted into an EPA real-time data channel; and when the EPA field device receives or transmits a non-real-time data message, the non-real-time data is processed by a standard transmission control protocol (TCP) user datagram protocol (UDP) / internet protocol (IP) protocol entity and an EPA communication dispatching management entity.

Provided are a method and apparatus for processing data by a terminal. The method ma include: receiving higher layer signaling including indication information requesting for configuring a terminal tunnel protocol entity for processing data transmitted / received through a WLAN carrier, configuring the terminal tunnel protocol entity on the basis of the indication information; and receiving bearer-specific user data and transmitting the bear-specific user data to a terminal user plane entity corresponding thereto.

The present invention relates to transmission and retransmission of packet data in a communications system, where the communications system uses rate switching or channel switching. It provides an interface for information exchange between radio resource management and one or more transport protocol entities in a cellular mobile radio system, particularly a Universal Mobile Telecommunications System, UMTS, or WCDMA system.

Aspects of a system for optimizing fragment size for aggregation at the physical layer may include one more switch ICs and / or physical (PHY) layer ICs that enable reception of data packets via a medium access control layer protocol entity. Each received data packet may be fragmented into a plurality of fragment payloads, wherein a length of each of the plurality of fragment payloads is selected from a plurality of candidate lengths. Each of the plurality of fragment payloads may be sent via a PHY layer protocol entity instance selected from a plurality of PHY layer protocol entity instances.

The present invention discloses a method for safety control and a system thereof. The method of the invention comprises the following steps: when the connection initialization is executed, receiving the safety-mode control information by terminal; alternating the radio resource control entity of terminal with the convergence protocol entity of packet data; collocating and initiating a security process according to a security algorithm carried in the security mode control information, checking the received security mode control information; and returning the response information to the network side. If the security process after key updating is executed, the method comprises the following steps: receiving the security mode control information; obtaining the security algorithm, caching and stopping processing the data, collocating and initiating the security process; and checking the wholeness of received security mode control information according to the security algorithm, and returning to the security mode for controlling the response information. The invention can realize safe startup of system through security control when the system is started.

For switching between packet duplication operating modes, methods, apparatus, and systems are disclosed. One apparatus includes a processor and a transceiver that communicates with a mobile communication network via a radio bearer. The processor determines whether PDCP packet duplication associated with the PDCP protocol entity is to be activated and, if so, communicates with a mobile communication network according to a packet duplication mode of operation. Otherwise, the processor determines whether a split threshold value of the PDCP protocol entity is set to a predefined value, communicates with the mobile communication network according to a first split bearer mode of operation in response to determining that the split threshold value is set to the predefined value, and communicates with the mobile communication network according to a second split bearer mode of operation in response to determining that the split threshold value is not set to the predefined value.

Provided are a transmission method and device, the method being applied to a terminal device, the terminal device being respectively connected with a primary base station and a first secondary base station, the method comprising: receiving a primary and secondary cell update instruction sent by the primary base station, the primary and secondary cell update instruction comprising an identifier ofa second secondary base station; according to the identifier of the second auxiliary base station, establishing a first protocol entity associated with the data radio bearer DRB and the second auxiliary base station; receiving first downlink data sent by a second auxiliary base station according to a first protocol entity, and receiving second downlink data sent by the first auxiliary base stationaccording to a second protocol entity, the second protocol entity being a protocol entity in which the DRB is associated with the first auxiliary base station; and combining the first downlink data and the second downlink data to obtain a packet data convergence protocol PDCP data packet corresponding to the DRB. According to the embodiment of the invention, DAPS switching in a dual-connection scene can be realized, and the performance of data transmission is improved.

The present invention provides systems and methods for boundary detection of protocol data units in a communication system. A protocol entity such as a header check sequence (HCS) validation circuit is used to compute header check sequences of protocol data units in a packet burst. If a given HCS is valid, then the payload of the respective protocol data unit may be used. However, if the given HCS is invalid, then a parallel sliding window is used to compute other possible HCSs to identify a protocol data unit boundary. Once the boundary is located, then the payload may be used. Even if a protocol data unit is invalid or a header is not found, other protocol data units in a packet burst may be used in accordance with aspects of the invention. Such operation reduces the number of retransmissions required due to invalid HCSs.

The invention provides a protocol state machine automatic inference method based on state fusion. The method comprises the following steps of message format extraction, message classification, session abstraction and original state machine construction and the state fusion based on output messages. An extended prefix tree transducer EPTT is adopted in the protocol state machine automatic inference method to describe the session process of a protocol entity, the output messages of a protocol are focused on, the same states in a state machine are fused, testability interaction is carried out on the protocol entity to verify the feasibility of protocol state fusion, the automation of the inference of the protocol state machine is guaranteed, and the accuracy of an inference result is improved.

This invention discloses a realizing method for high speed up-line packet access property including a side of user devices and a network side with node B and a radio network controller, in which, the network side includes a HARQ entity, a distribution entity of re-sequence array, a re-sequence entity, an analysis entity and a frame protocol entity. This invention dislcoses a realizing method including: putting the HARQ entity, the re-sequence array distribution entity, the re-sequence entity and the analyzing entity in node B and setting up a frame protocol entity for each analyzing eitity.

Transaction Request sent by protocol entity to opposite entity is kept in Request queue, and Transaction Reply received from opposite entity for responding Transaction Request is kept in Response queue. Based on event trigging change of state, Transactions in two queues complete corresponding operation and change of state. Thus, reliable transmission of Transactions is realized by using mechanism of state machine. The invention overcomes disadvantages of realizing reliable transmission of Transactions: complicated mechanism and difficult to control testing.

The invention relates to arranging data flow control in a data transfer system comprising a sender and at least two protocol entities serving the transmission of data from the sender. The originating protocol entity of a suspension request primitive is checked. Suspension is set as the data transmission status for the protocol entity that has originated a suspension request primitive. The originating protocol entity of a resume request primitive is checked before sending it to the sender. Also the status information is checked. Transmission of the resume request primitive to the sender is prevented if suspension is set for any other protocol entity than the originating protocol entity of the resume request primitive.