TH67969A - Methods and systems for transmitting data frames. - Google Patents

Abstract

DC60 (02/11/47) The present invention reveals a method for transmitting data frames in which, after establishing a transmission bus to link the first transmitter and first receiver and creating a cell for transfer on the transmission bus, the transmitter converts the data frame to be sent into the cell and transmits that cell to the transmission bus, and the receiver receives the cell transmitted from the transmission bus while transmitting the data frame which is currently corresponding to the cell according to the information supported in the cell. The present invention further reveals a system for transmitting data frames. The present invention improves the transmission of single and multiple data frames between the network and user sides, especially when the network side needs to transfer a large number of group data frames. By means of converting multiple data frames into cells and transmitting the cells over the transmission bus, the constriction in the group data frame transmission process is resolved, network resources are saved, and network transmission performance is improved, and therefore, at the same time, when the communication device supports the same number of users, the cost of the communication device is reduced. The present invention reveals a method for transmitting data frames in which, after establishing a transmission bus to link the first transmitter and first receiver and creating a cell for transfer on the transmission bus, the transmitter converts the data frame to be sent into the cell and transmits that cell. The transmitting bus sends the data frame to the receiver, and the receiver receives the cell transmitted from the transmitting bus. During transmission, the data frame aligns with the cell based on the information supported in the cell. The present invention further reveals a system for transmitting data frames. The present invention improves the transmission of single and multiple data frames between the network and user sides, particularly when the network side needs to transfer large numbers of group data frames. By means of converting multiple data frames into cells and transmitting cells over the transmitting bus, the constriction in the group data frame transmission process is resolved, network resources are saved, and network transmission performance is improved. Therefore, at the same time, when the communication device supports the same number of users, the cost of the communication device is reduced.

Claims (9)

1. The method for improving multi-feature services in a Digital Multi-Feature Tenant Access Line (DSLAM) consists of: reception by the protocol processing board; a request for participation in a predefined multi-feature persistent virtual circuit (PVC) sent by the user; transmission by the protocol processing board; an authentication request to the main control board; authentication by the main control board; user rights; and if authentication is successful, the next step is taken; otherwise, an alarm indication is sent. The main control board determines whether the PVC multi-feature requested by the user persists. The main control board creates the PVC multi-feature. If the PVC multi-feature does not persist, the main control board controls the user to join the PVC multi-feature in the DSLAM. If the PVC multi-feature persists, the PVC multi-feature is created for each video stream and the playback signal of the PVC multi-feature to the user joining the PVC multi-feature via a shared high-speed bus cell. 2. Method under Claim 1 where the main control circuit board establishes connections between the user and multiple PVCs that the user requests to join while creating multiple PVCs that the user requests to join. 3. The method under Claim 1, whereby the protocol processing board's procedure for receiving a predefined multi-feature PVC request group submitted by the user, includes: receiving by the protocol processing board the multi-feature PVC request group for the Internet Group Management Protocol (IGMP) submitted by the user; identification by the protocol processing board and capture of the IGMP multi-feature PVC request group; and transmission of the IGMP multi-feature PVC request group to the main control board for protocol authentication. 4. The method under Claim 1, where the procedure for transmission by the Protocol Processor Circuit Board of the request for authentication to the Main Control Circuit Board, is further comprising the recording by the Protocol Processor Circuit Board in the user table of the virtual user (VC) and various PVC identifiers for which the user requests participation, and the transmission of upper-level messages to the Main Control Circuit Board via the message channel requesting user authentication. 5. Any one of the claims 1 through 4, where the method is further assembled with the determination by the main control board whether the user has exited the PVC, if determined that the user has exited the PVC, the main control board delivers a message to remove the user from the PVC that the user exited, and the PVC that the user exited is removed when the user is the last user of the PVC that the user exited. 6. The method under claim 5, where the procedure for determining by the main control board whether a user has exited the multi-PVC, involves the following: The protocol processing board sends a generic IGMP query request to the multi-PVC where the user's time is predetermined elsewhere at each location to determine whether the user responds within the predetermined time. If the user does not respond, it is considered that the user has exited the multi-PVC where the user's location is determined, and information about the exited user is sent to the main control board. Alternatively, the protocol processing board determines that the user has exited the multi-PVC where the user's location is determined based on the IGMP V2 request sent by the user upon exiting, and information about the exited user is sent to the main control board. 7. The method under claim 6, where information about the user is outgoing, is the user's internal VC identifier. 8. A complete system for improving multi-service characteristics in a digital multi-service tenant access (DSLAM) device, comprising a main control board, protocol processing board, and asymmetric digital tenant line (ADSL) interface board, where the main control board, protocol processing board, and ADSL interface board are interconnected to each other via a shared high-speed bus cell, and its connection structure consists of one end of a virtual connection (VC) which is terminated at the broadband access server (BAS) of the upper-floor network, the other end is terminated at the protocol processing board, and its intermediate part passes through the asynchronous transfer mode (ATM) network, the uplink interface (DSLAM), and the shared high-speed bus cell, and multiple user VCs are maintained. One end of each user VC is terminated at the remote terminal unit (RTU), the other end is terminated at the protocol processing board, and its intermediate part passes through the ADSL interface board and the shared high-speed bus cell. 9. The completed device fulfills claim 8, whereby the main control board (MCB) certifies multi-feature user rights, manages multi-feature user channels, manages multi-feature users, data framing, and provides an uplink interface. The protocol processing board (PCB) performs protocol conversion between ATM and Ethernet, distribution of multi-feature and single-feature data, capture and processing of IGMP requested data groups, IGMP querying and IGMP snooping, and optimization for improving the ADSL interface board and user ADSL access, and the convergence of multi-feature and single-feature VCs.