Techniques and apparatuses for control channel monitoring using a wakeup signal
First Claim
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1. A method of wireless communication, comprising:
- identifying, by a user equipment (UE), a wakeup signal resource associated with the UE based at least in part on a control channel search space resource associated with the UE, wherein the wakeup signal resource maps to the control channel search space resource and precedes the control channel search space resource;
monitoring, by the UE, the wakeup signal resource for an indication of whether to monitor the control channel search space resource; and
monitoring, by the UE, the control channel search space resource when the monitoring of the wakeup signal resource indicates that the control channel search space resource is to be monitored.
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Abstract
Techniques described herein use a wakeup signal to indicate to a user equipment (UE) whether an upcoming control channel signal resource includes information relevant to the UE. In this way, the UE can wake up to perform complex control channel signal processing only when the control channel includes signals relevant to the UE, thereby conserving battery power and resources of the UE. Such techniques are particularly suited to MTC UEs, NB-IoT UEs, and/or the like, which may communicate with a network only occasionally, and which may be located in remote locations where changing or recharging a battery is difficult.
13 Citations
34 Claims
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1. A method of wireless communication, comprising:
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identifying, by a user equipment (UE), a wakeup signal resource associated with the UE based at least in part on a control channel search space resource associated with the UE, wherein the wakeup signal resource maps to the control channel search space resource and precedes the control channel search space resource; monitoring, by the UE, the wakeup signal resource for an indication of whether to monitor the control channel search space resource; and monitoring, by the UE, the control channel search space resource when the monitoring of the wakeup signal resource indicates that the control channel search space resource is to be monitored. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A method of wireless communication, comprising:
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identifying, by a base station, a wakeup signal resource associated with a user equipment (UE) based at least in part on a control channel search space resource associated with the UE, wherein the wakeup signal resource maps to the control channel search space resource and precedes the control channel search space resource; determining, by the base station, that a control channel search space, associated with the control channel search space resource, is to include control information associated with the UE; and transmitting, by the base station, a wakeup signal in the wakeup signal resource based at least in part on determining that the control channel search space is to include control information associated with the UE, wherein the wakeup signal indicates whether the UE is to initiate a wakeup procedure to monitor the control channel search space resource of sleep during the control channel search space resource. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31)
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32. A user equipment (UE) for wireless communication, comprising:
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memory; and one or more processors coupled to the memory, the memory and the one or more processors configured to; identify a wakeup signal resource associated with the UE based at least in part on a control channel search space resource associated with the UE, wherein the wakeup signal resource maps to the control channel search space resource and precedes the control channel search space resource; monitor the wakeup signal resource for an indication of whether to monitor the control channel search space resource; and monitor the control channel search space resource when the monitoring of the wakeup signal resource indicates that the control channel search space resource is to be monitored.
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33. A base station for wireless communication, comprising:
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memory; and one or more processors coupled to the memory, the memory and the one or more processors configured to; identify a wakeup signal resource associated with a user equipment (UE) based at least in part on a control channel search space resource associated with the UE, wherein the wakeup signal resource maps to the control channel search space resource and precedes the control channel search space resource; determine that a control channel search space, associated with the control channel search space resource, is to include control information associated with the UE; and transmit a wakeup signal in the wakeup signal resource based at least in part on determining that the control channel search space is to include control information associated with the UE, wherein the wakeup signal indicates whether the UE is to initiate a wakeup procedure to monitor the control channel search space resource of sleep during the control channel search space resource. - View Dependent Claims (34)
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Specification