Patent ID: 8817631

Claim:
A method for contention-based uplink transmission in a communication system, comprising: receiving, by a main control node in the communication system, data transmitted via a uplink contention transmission resource, and decoding the received data, wherein the uplink contention transmission resource is a uplink transmission resource which is allocated by the main control node to a plurality of terminal nodes in the communication system and used for uplink transmission by the plurality of terminal nodes in a contention-based manner; returning, by the main control node to terminal nodes transmitting data via the uplink contention transmission resource, receipt status information which reflects whether the data transmitted by the terminal nodes has been successfully decoded, wherein returning to the terminal nodes the receipt status information comprises: determining whether to allocate to the first terminal node a first uplink transmission resource after successfully decoding the data transmitted by the first terminal node; if determining to allocate to the first terminal node the first uplink transmission resource, encapsulating information of the first uplink transmission resource in a second schedule signaling, and transmitting the second schedule signaling via the physical downlink control channel scrambled by the identifier of the first terminal node; and if determining not to allocate the first uplink transmission resource, transmitting a first schedule signaling encapsulated with first information indicating a first downlink transmission resource via a physical downlink control channel scrambled by an identifier of the uplink contention transmission resource, and transmitting second information comprising the receipt status information via the first downlink transmission resource.