Data packet numbering in mobile packet switched data transmission
First Claim
1. A method for transmission of data packets in a packet-switched telecommunications system, the telecommunications protocol of which comprises a convergence protocol layer for converting user data packets into convergence protocol packets, and a link layer for transmitting convergence protocol packets as data units and for acknowledging the transmission, the method comprising the steps of:
- defining a transmit data packet number, for the convergence protocol packets to be sent, by a counter in a transmitter;
transferring the convergence protocol packets to be sent to the link layer for transmission;
defining a receive data packet number, for received convergence protocol packets, by a counter in a receiver;
acknowledging the received convergence protocol packets;
adding the transmit data packet number defined by the transmitter'"'"'s counter to the convergence protocol packet to be sent in response to performance of a predetermined process of the telecommunications system; and
updating the value of the receiver'"'"'s counter to correspond to said transmit data packet number.
3 Assignments
0 Petitions
Accused Products
Abstract
A method of numbering data packets in a packet-switched telecommunications system which utilizes acknowledged transmission and the telecommunications protocol of which comprises a convergence protocol layer for converting user data packets into convergence protocol packets, and a link layer for transmitting convergence protocol packets as data units and for acknowledging the transmission. A data packet number is defined for the convergence protocol packets to be sent by a counter and the convergence protocol packets to be sent are transmitted to the link layer for transmission without the data packet number. A data packet number is also defined for received convergence protocol packets by means of the counter and an acknowledgement of received convergence protocol packets is transmitted to the transmitter.
35 Citations
31 Claims
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1. A method for transmission of data packets in a packet-switched telecommunications system, the telecommunications protocol of which comprises a convergence protocol layer for converting user data packets into convergence protocol packets, and a link layer for transmitting convergence protocol packets as data units and for acknowledging the transmission, the method comprising the steps of:
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defining a transmit data packet number, for the convergence protocol packets to be sent, by a counter in a transmitter; transferring the convergence protocol packets to be sent to the link layer for transmission; defining a receive data packet number, for received convergence protocol packets, by a counter in a receiver; acknowledging the received convergence protocol packets; adding the transmit data packet number defined by the transmitter'"'"'s counter to the convergence protocol packet to be sent in response to performance of a predetermined process of the telecommunications system; and updating the value of the receiver'"'"'s counter to correspond to said transmit data packet number. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A packet-switched telecommunications system which comprises a terminal and a fixed network, which comprises a network element supporting packet-switched data transmission, data packets being arranged to be sent between the terminal and the network element in the telecommunications system and the telecommunications protocol of the telecommunications system comprising a convergence protocol layer for converting user data packets into convergence protocol packets, and a link layer for transmitting convergence protocol packets as data units and for acknowledging the transmission, whereby in the transmission of data packets between the terminal and the network element the system is arranged to:
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define, by means of a counter in a transmitter, a transmit data packet number for the convergence protocol packets to be sent, transfer the convergence protocol packets to be sent to the link layer for transmission, define, by means of a counter in a receiver, a receive data packet number for received convergence protocol packets, acknowledge the received convergence protocol packets, add the transmit data packet number defined by the transmitter'"'"'s counter to the convergence protocol packet to be sent in response to performance of a predetermined process of the telecommunications system, and update the value of the receiver'"'"'s counter to correspond to said transmit data packet number of the convergence protocol packet. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. A network element for a packet-switched telecommunication system, said network element being arranged to transmit data packets to a terminal supporting a packet-switched data transmission, said network element comprising:
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a counter for defining a transmit data packet number for the convergence protocol packets to be transmitted between the network element and the terminal; means for transferring the convergence protocol packets to be transmitted to the link layer to be transmitted; means for receiving acknowledgements of the received convergence protocol packets from said terminal; and means, responsive to performance of a predetermined process of the telecommunications system, for adding the transmit data packet number, defined by the counter, to the convergence protocol packet, to be sent to the terminal. - View Dependent Claims (17, 18, 19, 20, 21, 22, 30)
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23. A terminal for a packet-switched telecommunication system, said terminal being arranged to transmit data packets to a network element supporting a packet-switched data transmission, said terminal comprising:
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a counter for defining a transmit data packet number for the convergence protocol packets to be transmitted between the terminal and the network element; means for transferring the convergence protocol packets to be transmitted to the link layer to be transmitted; means for receiving acknowledgements of the received convergence protocol packets form said network element; and means, responsive to performance of a predetermined process of the telecommunications system, for adding the transmit data packet number defined by the counter, to the convergence protocol packet to be sent to the network element. - View Dependent Claims (24, 25, 26, 27, 28, 29, 31)
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Specification