METHOD AND DEVICE FOR TRANSMITTING DOWNLINK DATA
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United States of America Patent
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Oct 12, 2015
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Oct 23, 2014
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Abstract
The embodiments of the present invention relate to the technical field of wireless communications, and particularly to a method and device for transmitting downlink data, so as to solve the problems of bringing about great signaling burden and waiting delay in the case where data transmission solution is performed with regard to burst small data packet transmission existing in the prior art. In the embodiments of the present invention, after receiving a first type data packet from an SGW, a base station sends a paging message carrying a terminal identifier in the first type data packet; and after a terminal performs random access, a second type data packet obtained by de-encapsulating the first type data packet is sent to the terminal. The embodiments of the present invention can avoid control plane time delay and air interface signalling load brought by switching from an idle state to a connection state after data arrives, and greatly reduce the overhead of connection maintenance brought due to no data transmitting for a long time after a terminal enters a connection state. Thus, the performance of an existing cellular system for transmitting downlink burst small data is improved.
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