Base station and terminal apparatus for communicating information during multi-link power saving
According to an embodiment, a base station includes first and second wireless signal processing units and a link management unit. The first and second wireless signal processing units transmit and receive a wireless signal using first and second channels, respectively. The link management unit sets a multi-link to a first or second state. In the first state, a first link in which the first wireless signal processing unit is used and a second link in which the second wireless signal processing unit is used are each in an active mode in which communication is possible. In the second state, the first link is in the active mode or an intermittent operation mode in which an operation is intermittent, and the second link is an operation pause mode in which power consumption is less than in the intermittent operation mode.
1 . A base station configured to communicate with a terminal apparatus, the base station comprising:
a first wireless signal processing circuit configured to establish a first link with the terminal apparatus;
a second wireless signal processing circuit configured to establish a second link with the terminal apparatus, the second link differing from the first link; and
processing circuitry configured to transmit data via a multi-link comprising the first link and the second link, and associate the data with at least one of the first link or the second link based on a type of traffic information of the data, wherein
if the terminal apparatus is in a state of not being able to receive the data via a link associated with the data, the processing circuitry is further configured to:
accumulate the data;
transmit a beacon signal to the terminal apparatus using at least one of the first link or the second link, the beacon signal including information designating a predetermined link to be used for acquiring the data, wherein the type of traffic information is associated with both the first link and the second link, and the beacon signal includes information indicating separately for the first link and the second link whether the data corresponding to the type of traffic information is accumulated; and
cause either the first wireless signal processing circuit or the second wireless signal processing circuit that operates on the predetermined link to transmit the data.
2 . The base station according to claim 1 , wherein the beacon signal includes information indicating whether or not a piece of data that is designated to the first link among the data has been accumulated, and information indicating whether or not a piece of data that is designated to the second link among the data has been accumulated.
3 . A terminal apparatus configured to communicate with a base station, the terminal apparatus comprising:
a first wireless signal processing circuit configured to establish a first link with the base station;
a second wireless signal processing circuit configured to establish a second link with the base station, the second link differing from the first link; and
processing circuitry configured to transmit data via a multi-link comprising the first link and the second link, and associate the data with at least one of the first link or the second link based on a type of traffic information of the data, wherein
if the terminal apparatus is in a state of not being able to receive the data via a link associated with the data, the base station accumulates the data, and the processing circuitry is further configured to:
receive a beacon signal using at least one of the first link or the second link, the beacon signal including information designating a predetermined link to be used for acquiring the data, wherein the type of traffic information is associated with both the first link and the second link, and the beacon signal includes information indicating separately for the first link and the second link whether the data corresponding to the type of traffic information is accumulated; and
cause either the first wireless signal processing unit or the second wireless signal processing unit that operates on the predetermined link to acquire the data.
4 . The terminal apparatus according to claim 3 , wherein the beacon signal includes information indicating whether or not a piece of data that is designated to the first link among the data has been accumulated, and information indicating whether or not a piece of data that is designated to the second link among the data has been accumulated.