Method for accessing hybrid network, and gateway apparatus, wireless terminal and communication system thereof
First Claim
1. A method for accessing a hybrid network including a wireless wide area network and a wireless distributed network, comprising the steps of:
- regularly transmitting by a base station of the wireless wide area network a synchronization signaling for synchronizing with a downlink common control channel, on a transmission frequency band of the wireless distributed network;
transmitting by a wireless terminal a relay request signal requesting to relay a data packet to be transmitted, after receiving the synchronization signaling;
sensing by a gateway apparatus the downlink common control channel, and starting to access the wireless distributed network to receive the relay request signal from the wireless terminal at a time instant corresponding to the synchronization signaling; and
establishing by the gateway apparatus a connection with the wireless terminal in the wireless distributed network environment, wherein establishing the connection with the wireless terminal comprisestransmitting by the gateway apparatus a reply signal to the wireless terminal after receiving the relay request signal,determining by the wireless terminal a gateway apparatus through which a relay operation is to be made by measuring channel conditions, and transmitting a selection signal containing an address of the gateway apparatus through which the relay operation is to be made, andafter receiving the selection signal, transmitting a permit signal by the gateway apparatus corresponding to the address included in the selection signal, andfurther wherein the wireless terminal compares conditions of channels indicated in the reply signal, and selects the gateway apparatus with the best condition of channel and which needs the lowest transmission power for directly communicating therewith as the gateway apparatus through which the relay operation is to be made.
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Abstract
A method for accessing a hybrid network including a wide area network and a distributed network, a gateway apparatus, a wireless terminal and a gateway communication system are disclosed for reducing the power consumption of the wireless terminal which is an access gateway. The method comprises: sensing by a gateway apparatus a relay request slot on a downlink common control channel of the wide area network; transmitting by a wireless terminal a relay request signal requesting to relay a data packet to be transmitted, in the relay request slot on the downlink common control channel; and if the relay request signal from the wireless terminal is sensed in the relay request slot, establishing by the gateway apparatus a connection with the wireless terminal in a distributed network environment. As such, the gateway apparatus accesses the wireless distributed network only when the surrounding wireless terminals require data relay, without sensing signals on both networks simultaneously, in order to reduce the power consumption.
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Citations
22 Claims
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1. A method for accessing a hybrid network including a wireless wide area network and a wireless distributed network, comprising the steps of:
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regularly transmitting by a base station of the wireless wide area network a synchronization signaling for synchronizing with a downlink common control channel, on a transmission frequency band of the wireless distributed network; transmitting by a wireless terminal a relay request signal requesting to relay a data packet to be transmitted, after receiving the synchronization signaling; sensing by a gateway apparatus the downlink common control channel, and starting to access the wireless distributed network to receive the relay request signal from the wireless terminal at a time instant corresponding to the synchronization signaling; and establishing by the gateway apparatus a connection with the wireless terminal in the wireless distributed network environment, wherein establishing the connection with the wireless terminal comprises transmitting by the gateway apparatus a reply signal to the wireless terminal after receiving the relay request signal, determining by the wireless terminal a gateway apparatus through which a relay operation is to be made by measuring channel conditions, and transmitting a selection signal containing an address of the gateway apparatus through which the relay operation is to be made, and after receiving the selection signal, transmitting a permit signal by the gateway apparatus corresponding to the address included in the selection signal, and further wherein the wireless terminal compares conditions of channels indicated in the reply signal, and selects the gateway apparatus with the best condition of channel and which needs the lowest transmission power for directly communicating therewith as the gateway apparatus through which the relay operation is to be made. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A gateway apparatus for accessing a hybrid network including a wireless wide area network and a wireless distributed network, comprising:
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a wide area network transceiving unit configured to transmit and receive signals in the wireless wide area network; a distributed network transceiving unit configured to transmit and receive signals in the wireless distributed network; a timer unit configured to detect whether current time is an integer multiple of a periodic time for a downlink common control channel of the wireless wide area network, and periodically generate an enabling instruction if the current time is an integer multiple of the periodic time; and a sensing unit configured to sense the downlink common control channel wherein the sensing unit is further configured to sense the channel of the wireless distributed network at the enabling time instant in response to the enabling instruction generated by the timer unit; wherein the distributed network unit is further configured to establish a connection with the wireless terminal in the wireless distributed network environment, wherein the distributed network unit establishes the connection with the wireless terminal by transmitting a reply signal to the wireless terminal after receiving the relay request signal, receiving, from the wireless terminal after determining based on measured channel conditions to use the gateway apparatus for the relay operation, a selection signal containing an address of the gateway apparatus through which the relay operation is to be made, and after receiving the selection signal, the distributed network transceiving unit transmits a permit signal corresponding to the address included in the selection signal, and further wherein the selection signal is received from the wireless terminal after the wireless terminal compares conditions of channels indicated in the reply signal and selects the gateway apparatus based on the gateway apparatus having the best channel condition and which needs the lowest transmission power for directly communicating therewith. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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Specification