Enhancing wimax performance with subscriber stations acting as ad hoc repeaters
First Claim
1. A wireless communication device comprising:
- a processor;
a relay station module coupled to the processor; and
a transceiver unit coupled to the processor and configured to transmit and receive downlink (DL) frames and uplink (UL) frames via an air interface, wherein each of the DL and UL frames includes a data portion having a first sub-portion and a second sub-portion;
wherein the processor is configured to operate the wireless communication device as a subscriber station in a first mode for communication directly with a base station, and as both the subscriber station and as a relay station in a second mode for communication between another subscriber station and the base station; and
wherein during operation in the second mode, the relay station module is configured to schedule the transceiver unit to receive first data for the wireless communication device from the base station during a first slot of the first sub-portion of a given DL frame, and to receive second data for the another subscriber station during a second slot of the first sub-portion of the given DL frame, wherein the relay station module is further configured to schedule the transceiver unit to transmit the second data to the another subscriber station during the second sub-portion of a DL frame that is subsequent to the given DL frame.
4 Assignments
0 Petitions
Accused Products
Abstract
A wireless communications network includes a subscriber station acting as a relay station (or ad-hoc repeater) between another subscriber station (a child subscriber station) and a base station (BTS) when there is no LOS between the other subscriber station and the base station, but there is LOS between the other subscriber station and the relay station. The BTS divides each of the downlink (DL) and uplink (UL) sub-frames into P1 and P2 portions and schedules transmissions of child subscriber DL and UL data during P1 of the DL and UL frames (from the BTS), respectively. The relay station receives the child subscriber DL and UL data, stores the data, and transmits/forwards the child subscriber DL and UL data during P2 of the DL and UL frame (to the BTS), respectively.
-
Citations
16 Claims
-
1. A wireless communication device comprising:
-
a processor; a relay station module coupled to the processor; and a transceiver unit coupled to the processor and configured to transmit and receive downlink (DL) frames and uplink (UL) frames via an air interface, wherein each of the DL and UL frames includes a data portion having a first sub-portion and a second sub-portion; wherein the processor is configured to operate the wireless communication device as a subscriber station in a first mode for communication directly with a base station, and as both the subscriber station and as a relay station in a second mode for communication between another subscriber station and the base station; and wherein during operation in the second mode, the relay station module is configured to schedule the transceiver unit to receive first data for the wireless communication device from the base station during a first slot of the first sub-portion of a given DL frame, and to receive second data for the another subscriber station during a second slot of the first sub-portion of the given DL frame, wherein the relay station module is further configured to schedule the transceiver unit to transmit the second data to the another subscriber station during the second sub-portion of a DL frame that is subsequent to the given DL frame. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. A method comprising:
-
transmitting and receiving, by a wireless communication device, downlink (DL) frames and uplink (UL) frames via an air interface, wherein each of the DL and UL frames includes a data portion having a first sub-portion and a second sub-portion; operating the wireless communication device in a first mode as a subscriber station for communication directly with a base station, and in a second mode as both the subscriber station and as a relay station for communication between another subscriber station and the base station; and operating in the second mode in response to receiving information corresponding to the another subscriber station from the base station; wherein during operation in the second mode; receiving first data for the wireless communication device from the base station in a first slot of the first sub-portion of a given DL frame, and receiving second data for the another subscriber station during a second slot of the first sub-portion of the given DL frame; transmitting the second data to the another subscriber station during the second sub-portion of a subsequent DL frame. - View Dependent Claims (11, 12, 13, 14, 15, 16)
-
Specification