Base station, mobile terminal device and method for implementing a selective-per-antenna-rate-control (S-PARC) technique in a wireless communications network
First Claim
1. A mobile terminal device comprising:
- a receiver for receiving a signal from each of N transmit antennas;
a processor for generating a reduced feedback signal for M transmission modes in response to receiving the signals from the N transmit antennas, said reduced feedback signal for M transmission modes includes;
M transmission rate indicators; and
an antenna processing order which indicates the order that could be used for detecting the signals corresponding to each of the M transmission modes; and
a transmitter for transmitting the reduced feedback signal.
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Accused Products
Abstract
A method is described herein that enables a Selective-Per-Antenna-Rate-Control (S-PARC) technique to be effectively implemented in a wireless communications network (e.g., HSPDA third generation communications network). In one embodiment, the method enables the S-PARC technique to be implemented in the wireless communications network by enabling a mobile terminal device to generate and transmit a “full” feedback signal to a base station that analyzes the “full” feedback signal and determines which mode and transmission rate(s) are going to be used to transmit data substream(s) from selected transmit antenna(s) to the mobile terminal device. In another embodiment, the method enables the S-PARC technique to be implemented in the wireless communications network by enabling a mobile terminal device to generate and transmit a “reduced” feedback signal to a base station that analyzes the “reduced” feedback signal and determines which mode and transmission rate(s) are going to be used to transmit data substream(s) from selected transmit antenna(s) to the mobile terminal device.
184 Citations
50 Claims
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1. A mobile terminal device comprising:
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a receiver for receiving a signal from each of N transmit antennas;
a processor for generating a reduced feedback signal for M transmission modes in response to receiving the signals from the N transmit antennas, said reduced feedback signal for M transmission modes includes;
M transmission rate indicators; and
an antenna processing order which indicates the order that could be used for detecting the signals corresponding to each of the M transmission modes; and
a transmitter for transmitting the reduced feedback signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A base station comprising:
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a receiver for receiving a feedback signal from a mobile terminal device;
a rate calculator for processing the feedback signal to derive at least one transmission rate indicator not included in the feedback signal;
a rate modifier for adjusting the at least one derived transmission rate indicators according to a power allocation or code allocation factor for a signal;
a mode selector for selecting a transmission mode based on the at least one adjusted transmission rate indicator;
an antenna selector for selecting a set of active antennas; and
a transmitter for transmitting a packet data signal using the selected set of antennas, the selected transmission mode, and the transmission data rates determined for the selected antennas according to the selected mode. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31)
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32. A network comprising:
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at least one mobile terminal device; and
at least one base station including;
a plurality of transmit antennas;
a processor that receives a reduced feedback signal from said mobile terminal device; and
said processor for processing the reduced feedback signal to determine which mode and transmission rate(s) are going to be used to transmit data substream(s) from selected transmit antenna(s) to said at least one mobile terminal device. - View Dependent Claims (33, 34, 35)
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36. A method for implementing a Selective-Per-Antenna-Rate-Control (S-PARC) technique in a wireless communications network, said method comprising the steps of:
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transmitting a signal from each of N-transmit antennas in a base station to a mobile terminal device;
generating, in said mobile terminal device, a reduced feedback signal in response to receiving the signals, said reduced feedback signal includes;
M-transmit rates; and
a antenna processing order which indicates for each mode a selection of transmit antenna(s) that could be used to transmit data substream(s) to said mobile terminal device; and
transmitting, from said mobile terminal device, the reduced feedback signal to the base station; and
processing, in said base station, the reduced feedback signal to determine which mode and transmission rate(s) are actually going to be used to transmit data substream(s) from selected transmit antenna(s) to said mobile terminal device. - View Dependent Claims (37, 38, 39, 40, 41, 42, 43, 44, 45, 46)
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47. A base station comprising:
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N-transmit antennas; and
a processor that receives a feedback signal from a mobile terminal device, said feedback signal includes;
M-transmit rates; and
an antenna processing order which indicates for each mode a selection of transmit antenna(s) that could be used to transmit data substream(s) to said mobile terminal device; and
said processor for processing the feedback signal to determine which mode and transmission rate(s) are actually going to be used to transmit data substream(s) from selected transmit antenna(s) to said mobile terminal device. - View Dependent Claims (48, 49)
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50. A mobile phone comprising:
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a receiver for receiving a signal from each of N-transmit antennas located within in a base station; and
a processor for generating a full feedback signal in response to receiving the signals from the N-transmit antennas within the base station, said full feedback signal includes;
per-stream rates for each mode; and
an antenna selection(s) for each mode, where each mode corresponds to a number of data substream(s) that could be transmitted by transmit antenna(s) to said mobile phone; and
a transmitter for transmitting the full feedback signal to the base station which then processes the full feedback signal to determine which mode and transmission rate(s) are actually going to be used to transmit data substream(s) from selected transmit antenna(s) to said mobile phone.
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Specification