RECEIVE DIVERSITY CONTROL IN TD-SCDMA
First Claim
Patent Images
1. A method of wireless communication with a user equipment (UE) having a plurality of receive chains, comprising:
- enabling an additional receive chain upon successfully decoding a control channel;
determining an amount of control channel activity based at least in part on a filtered rate of successfully decoding the control channel, the filtered rate of successfully decoding being based at least in part on at least one previous decoding event of the control channel and at least one previous filtered rate of successfully decoding; and
dynamically disabling the additional receive chain based at least in part on the amount of control channel activity.
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Abstract
In a TD-SCDMA user equipment (UE) with multiple receive chains, receive diversity may be implemented where multiple receive chains may simultaneously activate to receive downlink signals. Receive diversity may be enabled when single chain reception provides undesired results and when receive diversity will not impact power consumption too much. A state machine controls receive diversity operation based on operating conditions such as control channel activity, successful control channel decoding, signal-to-interference ratio, and other factors.
18 Citations
20 Claims
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1. A method of wireless communication with a user equipment (UE) having a plurality of receive chains, comprising:
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enabling an additional receive chain upon successfully decoding a control channel; determining an amount of control channel activity based at least in part on a filtered rate of successfully decoding the control channel, the filtered rate of successfully decoding being based at least in part on at least one previous decoding event of the control channel and at least one previous filtered rate of successfully decoding; and dynamically disabling the additional receive chain based at least in part on the amount of control channel activity. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An apparatus for wireless communication with a user equipment (UE) having a plurality of receive chains, comprising:
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a memory; and at least one processor coupled to the memory, the at least one processor being configured to; enable an additional receive chain upon successfully decoding a control channel; determine an amount of control channel activity based at least in part on a filtered rate of successfully decoding the control channel, the filtered rate of successfully decoding being based at least in part on at least one previous decoding event of the control channel and at least one previous filtered rate of successfully decoding; and dynamically disable the additional receive chain based at least in part on the amount of control channel activity. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. An apparatus for wireless communication with a user equipment (UE) having a plurality of receive chains, comprising:
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means for enabling an additional receive chain upon successfully decoding a control channel; means for determining an amount of control channel activity based at least in part on a filtered rate of successfully decoding the control channel, the filtered rate of successfully decoding being based at least in part on at least one previous decoding event of the control channel and at least one previous filtered rate of successfully decoding; and means for dynamically disabling the additional receive chain based at least in part on the amount of control channel activity. - View Dependent Claims (16, 17, 18, 19)
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20. A computer program product for wireless communication with a user equipment (UE) having a plurality of receive chains, comprising:
a non-transitory computer readable medium having encoded thereon program code, the program code comprising; program code to enable an additional receive chain upon successfully decoding a control channel; program code to determine an amount of control channel activity based at least in part on a filtered rate of successfully decoding the control channel, the filtered rate of successfully decoding being based at least in part on at least one previous decoding event of the control channel and at least one previous filtered rate of successfully decoding; and program code to dynamically disable the additional receive chain based at least in part on the amount of control channel activity.
Specification