Method and communication device for controlling beam-forming tracking
First Claim
1. A method in a communication device for controlling beam-forming (BF) tracking, the method comprising at least one of:
- switching the communication device from a coarse BF tracking state to a non-BF tracking state when a first timer expires, wherein the communication device transmits pilot signals for BF tracking, feedback information for BF tracking or both the pilot signals and the feedback information more frequently in the coarse BF tracking state than in the non-BF tracking state; and
switching the communication device from a fine BF tracking state to the coarse BF tracking state or the non-BF tracking state when a second timer expires, wherein the communication device transmits the pilot signals for BF tracking, the feedback information for BF tracking or both the pilot signals and the feedback information more frequently in the fine BF tracking state than in the coarse BF tracking state;
wherein the first timer, the second timer, or both the first timer and the second timer are set based on at least one of traffic characteristics of the communication device and mobility characteristics of a terminal device which is the communication device or communicates with the communication device, wherein the traffic characteristics comprise a size of a time interval that traffic data is to be transmitted to or received from the communication device, and wherein the mobility characteristics comprise a moving speed of the terminal device.
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Abstract
A method in a communication device for controlling beam-forming (BF) tracking is disclosed. The method comprises switching the communication device from a coarse BF tracking state to a non-BF tracking state when a first timer expires. The communication device transmits pilot signals for BF tracking, feedback information for BF tracking or both the pilot signals and the feedback information more frequently in the coarse BF tracking state than in the non-BF tracking state. Additionally or alternatively, the method comprises switching the communication device from a fine BF tracking state to a coarse BF tracking state or a non-BF tracking state when a second timer expires. The communication device transmits pilot signals for BF tracking, feedback information for BF tracking or both the pilot signals and the feedback information more frequently in the fine BF tracking state than in the coarse BF tracking state.
16 Citations
18 Claims
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1. A method in a communication device for controlling beam-forming (BF) tracking, the method comprising at least one of:
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switching the communication device from a coarse BF tracking state to a non-BF tracking state when a first timer expires, wherein the communication device transmits pilot signals for BF tracking, feedback information for BF tracking or both the pilot signals and the feedback information more frequently in the coarse BF tracking state than in the non-BF tracking state; and switching the communication device from a fine BF tracking state to the coarse BF tracking state or the non-BF tracking state when a second timer expires, wherein the communication device transmits the pilot signals for BF tracking, the feedback information for BF tracking or both the pilot signals and the feedback information more frequently in the fine BF tracking state than in the coarse BF tracking state; wherein the first timer, the second timer, or both the first timer and the second timer are set based on at least one of traffic characteristics of the communication device and mobility characteristics of a terminal device which is the communication device or communicates with the communication device, wherein the traffic characteristics comprise a size of a time interval that traffic data is to be transmitted to or received from the communication device, and wherein the mobility characteristics comprise a moving speed of the terminal device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 17)
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8. A communication device for controlling beam-forming (BF) tracking, comprising:
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a transceiver configured to transmit pilot signals for BF tracking, feedback information for BF tracking or both the pilot signals and the feedback information; a switching unit configured to; switch the communication device from a coarse BF tracking state to a non-BF tracking state when a first timer expires, switch the communication device from a fine BF tracking state to the coarse BF tracking state or the non-BF tracking state when a second timer expires, or switch the communication device from the coarse BF tracking state to the non-BF tracking state when the first timer expires and also switch the communication device from the fine BF tracking state to either the coarse BF tracking state or the non-BF tracking state when the second timer expires, wherein the transceiver is configured to transmit the pilot signals, the feedback information or both the pilot signals and the feedback information more frequently in the coarse BF tracking state than in the non-BF tracking state, and more frequently in the fine BF tracking state than in the coarse BF tracking state; and a timer setting unit configured to set the first timer, the second timer, or both the first timer and the second timer based on at least one of traffic characteristics of the communication device and mobility characteristics of a terminal device which is the communication device or communicates with the communication device, wherein the traffic characteristics comprise a size of a time interval that traffic data is to be transmitted to or received from the communication device, and wherein the mobility characteristics comprise a moving speed of the terminal device. - View Dependent Claims (9, 10, 11, 12, 13, 14, 18)
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15. A non-transitory computer readable storage medium that stores computer code instructions which when executed by a processor of a communication device cause the processor to control beam-forming (BF) tracking by performing operations comprising at least one of:
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switching the communication device from a coarse BF tracking state to a non-BF tracking state when a first timer expires, wherein the communication device transmits pilot signals for BF tracking, feedback information for BF tracking or both the pilot signals and the feedback information more frequently in the coarse BF tracking state than in the non-BF tracking state; and switching the communication device from a fine BF tracking state to the coarse BF tracking state or the non-BF tracking state when a second timer expires, wherein the communication device transmits the pilot signals for BF tracking, the feedback information for BF tracking or both the pilot signals and the feedback information more frequently in the fine BF tracking state than in the coarse BF tracking state; wherein the first timer, the second timer, or both the first timer and the second timer are set based on at least one of traffic characteristics of the communication device and mobility characteristics of a terminal device which is the communication device or communicates with the communication device, wherein the traffic characteristics comprise a size of a time interval that traffic data is to be transmitted to or received from the communication device, and wherein the mobility characteristics comprise a moving speed of the terminal device.
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16. A communication device for controlling beam-forming (BF) tracking, the communication device comprising:
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a transceiver; a processor; and a memory, said memory having computer-executable program code stored therein which, when executed by the processor, causes the communication device to perform at least one of; switching the communication device from a coarse BF tracking state to a non-BF tracking state when a first timer expires, wherein the communication device transmits pilot signals for BF tracking, feedback information for BF tracking or both the pilot signals and the feedback information more frequently in the coarse BF tracking state than in the non-BF tracking state; and switching the communication device from a fine BF tracking state to the coarse BF tracking state or the non-BF tracking state when a second timer expires, wherein the communication device transmits the pilot signals for BF tracking, the feedback information for BF tracking or both the pilot signals and the feedback information more frequently in the fine BF tracking state than in the coarse BF tracking state; wherein the first timer, the second timer, or both the first timer and the second timer are set based on at least one of traffic characteristics of the communication device and mobility characteristics of a terminal device which is the communication device or communicates with the communication device, wherein the traffic characteristics comprise a size of a time interval that traffic data is to be transmitted to or received from the communication device, and wherein the mobility characteristics comprise a moving speed of the terminal device.
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Specification