Wireless Radio Access Network Control Channel Capacity Management
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Abstract
Transmission capacity for a control channel sent to multiple mobile wireless devices in a wireless network is increased by transmitting the control channel using multi user multiple input multiple output transmissions (MU MIMO). Received signal quality measured at mobile wireless devices in a radio sector are communicated to a radio node and used to determine one or more sets of mobile wireless devices to share transmission of control channel elements on the same time and frequency resource element. The radio node indicates the use of MU MIMO and the selection of precoding matrices to each of the mobile wireless devices in the each set of mobile wireless devices.
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Citations
43 Claims
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1-23. -23. (canceled)
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24. A method, comprising:
at a base station; estimating a received downlink signal quality for each mobile wireless device of a plurality of mobile wireless devices connected to the base station; determining a number of control channel elements to be transmitted to each mobile wireless device based on the received downlink signal quality of each mobile wireless device; grouping a portion of the plurality of mobile wireless devices into a first group based on the received downlink signal quality of each mobile wireless device and a number of receive antennas for each mobile wireless device; and transmitting control channel information comprising the number of control channel elements to each of the first group of mobile wireless devices, wherein the control channel information is simultaneously transmitted to each of the first group of mobile wireless devices using the same frequency and time resource elements based on multi-user multiple-input multiple-output (MU-MIMO) transmissions. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31, 32)
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33. A base station, comprising:
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a processor; a transceiver; a plurality of antennas; and a non-transitory computer readable storage medium comprising a set of instructions that are executable by the processor, wherein the instructions causes the processor to; estimate a received downlink signal quality for each mobile wireless device of a plurality of mobile wireless devices connected to the base station; determine a number of control channel elements to be transmitted to each mobile wireless device based on the received downlink signal quality of each mobile wireless device; group a portion of the plurality of mobile wireless devices into a first group based on the received downlink signal quality of each mobile wireless device and a number of receive antennas for each mobile wireless device; and transmit, via the transceiver and one or more of the plurality of antennas, control channel information comprising the number of control channel elements to each of the first group of mobile wireless devices, wherein the control channel information is simultaneously transmitted to each of the first group of mobile wireless devices using the same frequency and time resource elements based on multi-user multiple-input multiple-output (MU-MIMO) transmissions. - View Dependent Claims (34, 35, 36, 37, 38, 39, 40)
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41. A mobile wireless device, comprising:
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a processor; a transceiver; a plurality of antennas; and a non-transitory computer readable storage medium comprising a set of instructions that are executable by the processor, wherein the instructions causes the processor to; receive an indicator that indicates transmissions on a control channel are encoded using MU MIMO transmission; receive and decode signals transmitted on a the control channel, wherein the signals on the control channel comprise a number of control channel elements corresponding to a received downlink signal quality for the mobile wireless device and wherein the number of control channel elements are simultaneously transmitted to at least one other mobile wireless device using the same frequency and time resource elements. - View Dependent Claims (42, 43)
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Specification