Wireless communications system and method
First Claim
1. A wireless communications system, comprising:
- a base station;
a plurality of relay devices; and
a terminal device configured to;
transmit one or more access request messages of a first type to request uplink resources from the base station, andtransmit an access request message of a second type if no response to the transmitted access request messages of the first type is received from the base station, whereinthe base station is responsive to an access request message of the first type received from the terminal device to transmit an allocation of uplink resources to the terminal device,the plurality of relay devices are each responsive to an access request message of the second type received from the terminal device to transmit a relayed access request message to the base station to request the base station to allocate uplink resources to the terminal device,the relayed access request messages include information that triggers the base station to designate a first relay device of the plurality of relay devices to serve the terminal device and to reject any undesignated relay devices of the plurality of relay devices by transmitting a negative acknowledgement message including a NACK indication to the undesignated relay devices; and
the base station is responsive to the relayed access request message from the first relay device to transmit an allocation of uplink resources directly to the terminal device.
3 Assignments
0 Petitions
Accused Products
Abstract
A wireless communications system includes a base station, a relay device, and a terminal device. The terminal device can transmit one or more first type access request messages to request uplink resources from the base station, and if no response to the first type access request messages is received from the base station, can transmit a second type access request message. The base station is responsive to a first type access request message received from the terminal device to transmit an allocation of uplink resources to the terminal device. The relay device is responsive to a second type access request message received from the terminal device to transmit a relayed access request message to request the base station to allocate uplink resources to the terminal device. The base station is responsive to the relayed access request message to transmit an allocation of uplink resources to the terminal device.
22 Citations
18 Claims
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1. A wireless communications system, comprising:
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a base station; a plurality of relay devices; and a terminal device configured to; transmit one or more access request messages of a first type to request uplink resources from the base station, and transmit an access request message of a second type if no response to the transmitted access request messages of the first type is received from the base station, wherein the base station is responsive to an access request message of the first type received from the terminal device to transmit an allocation of uplink resources to the terminal device, the plurality of relay devices are each responsive to an access request message of the second type received from the terminal device to transmit a relayed access request message to the base station to request the base station to allocate uplink resources to the terminal device, the relayed access request messages include information that triggers the base station to designate a first relay device of the plurality of relay devices to serve the terminal device and to reject any undesignated relay devices of the plurality of relay devices by transmitting a negative acknowledgement message including a NACK indication to the undesignated relay devices; and the base station is responsive to the relayed access request message from the first relay device to transmit an allocation of uplink resources directly to the terminal device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A method of wirelessly communicating data from a terminal device to a base station via a first relay device of a plurality of relay devices, the method comprising:
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transmitting one or more access request messages of a first type from the terminal device to request uplink resources from the base station; transmitting an access request message of a second type from the terminal device, via the plurality of relay devices, to the base station if no response to the transmitted access request messages of the first type is received at the terminal device from the base station; transmitting from the base station an allocation of uplink resources to the terminal device when an access request message of the first type is received at the base station from the terminal device; transmitting from each of the plurality of relay devices a relayed access request message to the base station to request the base station to allocate uplink resources to the terminal device when an access request message of the second type is received at each of the plurality of relay devices from the terminal device; and transmitting from the base station an allocation of uplink resources directly to the terminal device in response to an access request message relayed to the base station from a first relay device of the plurality of relay devices, wherein the access request messaged relayed from the plurality of relay devices include information that triggers the base station to designate the first relay device to serve the terminal device and to reject any undesignated relay devices by transmitting a negative acknowledgement message including a NACK indication to the undesignated relay devices.
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Specification