ADAPTIVE TRANSMISSION MODE SWITCHING
First Claim
1. A method of operating a node of a radio access network which communicates over a radio interface with a wireless terminal, the method comprising:
- the node obtaining with respect to the wireless terminal both a terminal speed value and a throughput value;
the node using both the terminal speed value and the throughput value to make a determination when to switch between plural transmission modes, at least one of the transmission modes comprising a multiple input multiple output (MIMO) mode.
1 Assignment
0 Petitions
Accused Products
Abstract
A node (28) of a radio access network (20) communicates over a radio interface (32) with a wireless terminal (30). The node (28) comprises a transmitter (34) and a controller (40). The transmitter (34) selectively operates in plural multiple input multiple output (MIMO) modes for downlink transmission over the radio interface (32). The controller (40) uses both a terminal speed value and a throughput value to make a determination when to switch between the plural multiple input multiple output (MIMO) modes for communicating with the wireless terminal. The plural MIMO modes comprise a first mode and a second mode. In the first mode open loop MIMO operates with cyclical diversity delay. In the second mode open loop MIMO operates without cyclical diversity delay. Although operating in open loop MIMO, advantages such as those of closed loop MIMO are realized.
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Citations
34 Claims
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1. A method of operating a node of a radio access network which communicates over a radio interface with a wireless terminal, the method comprising:
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the node obtaining with respect to the wireless terminal both a terminal speed value and a throughput value; the node using both the terminal speed value and the throughput value to make a determination when to switch between plural transmission modes, at least one of the transmission modes comprising a multiple input multiple output (MIMO) mode. - 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 node of a radio access network which communicates over a radio interface with a wireless terminal, the node comprising:
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a transmitter configured to selectively operate in at least a multiple input multiple output (MIMO) mode for downlink transmission over the radio interface; a controller configured to use both a terminal speed value and a throughput value to make a determination when to switch between plural transmit modes, the plural transmit modes including at least one multiple input multiple output (MIMO) mode. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34)
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Specification