Methods and Systems for Downlink Transmit Power Control Command Transmission
First Claim
1. A method for communicating transmit power control (TPC) commands, the method comprising:
- receiving, by a user equipment (UE), a downlink TPC command from a serving base station during a first downlink timeslot in a sequence of downlink timeslots;
generating an uplink TPC command according to a received power level of the downlink TPC command;
transmitting, by the UE, the uplink TPC command in a first uplink timeslot in a sequence of uplink timeslots, the first uplink timeslot being mapped to the first downlink timeslot in which the downlink TPC command was received from the serving base station; and
transmitting, by the UE, an alternating pattern of TPC commands over other uplink timeslots in the sequence of uplink timeslots.
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Accused Products
Abstract
Backwards compatibility may be achieved by transmitting an alternating pattern of uplink TPC commands in uplink timeslots. In one example, a served user equipment (UE) receives a downlink TPC command from a serving base station during a downlink timeslot in a sequence of downlink timeslots, and generates an uplink TPC command based on a received power level of the downlink TPC command. The served UE may then transmit the uplink TPC command in an uplink timeslot mapped to the downlink timeslot in which the downlink TPC command was received, as well as transmit an alternating pattern of uplink TPC commands in other uplink timeslots. The alternating pattern of uplink TPC commands may cause a neighboring base station to effectively maintain its transmit power level.
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Citations
20 Claims
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1. A method for communicating transmit power control (TPC) commands, the method comprising:
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receiving, by a user equipment (UE), a downlink TPC command from a serving base station during a first downlink timeslot in a sequence of downlink timeslots; generating an uplink TPC command according to a received power level of the downlink TPC command; transmitting, by the UE, the uplink TPC command in a first uplink timeslot in a sequence of uplink timeslots, the first uplink timeslot being mapped to the first downlink timeslot in which the downlink TPC command was received from the serving base station; and transmitting, by the UE, an alternating pattern of TPC commands over other uplink timeslots in the sequence of uplink timeslots. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A user equipment (UE) comprising:
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a processor; and a non-transitory computer readable storage medium storing programming for execution by the processor, the programming including instructions to; receive a downlink TPC command from a serving base station during a first downlink timeslot in a sequence of downlink timeslots; generate an uplink TPC command according to a received power level of the downlink TPC command; transmit the uplink TPC command in a first uplink timeslot in a sequence of uplink timeslots, the first uplink timeslot being mapped to the first downlink timeslot in which the downlink TPC command was received from the serving base station; and transmit an alternating pattern of TPC commands over other uplink timeslots in the sequence of uplink timeslots. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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18. A method for generating transmit power control (TPC) commands in an uplink Dedicated Physical Control Channel (DPCCH) when a serving radio link is configured with Algorithm 3, the method comprising:
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receiving, by a user equipment (UE), a downlink TPC command over the serving radio link; generating one uplink TPC command based on the downlink TPC command in a first timeslot in a sequence of timeslots; and generating a pattern of uplink TPC commands in other timeslots following the sequence of timeslots, wherein if a length a slot cycle is 3, then the pattern of uplink TPC commands consists of a first TPC command having a value of 0 followed by a second TPC command having a value of 1, and wherein if a length a slot cycle is 5, then the pattern of uplink TPC commands consists of a first TPC command having a value of zero, followed by a second TPC command having a value of 1, followed by a third TPC command having a value of 0, followed by a fourth TPC command having a value of 1.
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19. A method for adjusting downlink transmit power levels, the method comprising:
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transmitting, by a serving base station, a downlink TPC command to a user equipment (UE) during a first downlink timeslot in a sequence of downlink timeslots; receiving, by the serving base station, an uplink TPC command in a first uplink timeslot in a sequence of uplink timeslots and an alternating pattern of TPC commands over other uplink timeslots in the sequence of uplink timeslots, the first uplink timeslot being mapped to the first downlink timeslot over which the downlink TPC command was transmitted; and adjusting a downlink transmit power level of the serving base station according to the uplink TPC command without adjusting the downlink transmit power level according to TPC commands in the alternating pattern of TPC commands received over the other uplink timeslots. - View Dependent Claims (20)
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Specification