Method and apparatus for operating PDCP layer processing QoS in wireless communication system
A method for configuring a flow-based quality of service (QoS), configuring a bearer-based QoS, and introducing a new layer above a packet data convergence protocol (PDCP) layer in order to process the flow-based QoS are provided. An operation of the PDCP layer to support the new layer is also provided. The disclosure relates to a communication method and system for converging a fifth generation (5G) communication system for supporting higher data rates beyond a fourth generation (4G) system with an Internet of things (IoT) technology. The disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car or connected car, health care, digital education, smart retail, security and safety services.
1. A method performed by a terminal in a wireless communication system, the method comprising:
receiving, via a radio resource control (RRC) signaling from a base station, first information configuring one or more channel state information reference signal (CSI-RS) resources;
receiving, on a serving cell from the base station, a medium access control (MAC) control element (CE) indicating activation or deactivation of the one or more CSI-RS resources of the serving cell for each of channel state information (CSI) processes configured for the serving cell;
delivering information on the received MAC CE to a lower layer, for activating a reception of CSI-RS on at least one CSI-RS resource among the one or more CSI-RS resources of the serving cell; and
receiving at least one CSI-RS on the at least one CSI-RS resource among the one or more CSI-RS resources based on the information,
wherein the MAC CE includes one or more CSI-RS commands, each of which corresponds to one of the CSI processes configured for the serving cell,
wherein the one or more CSI-RS commands are included in the MAC CE in an ascending order of a CSI process ID, and
wherein each of the one or more CSI-RS commands includes a plurality of bits, each bit corresponding to one of the one or more CSI-RS resources of the serving cell and indicating an activation/deactivation status for a corresponding CSI-RS resource.
2. The method of claim 1 ,
wherein second information indicating that the one or more CSI-RS resources correspond to a first CSI-RS mode from the first CSI-RS mode and a second CSI-RS mode is received with the first information via the RRC signaling,
wherein a CSI-RS of the first CSI-RS mode is received with a periodicity and activated or deactivated by a MAC CE, and
wherein a CSI-RS of the second CSI-RS mode is received aperiodically.
3. The method of claim 1 , wherein the information includes time information associated with a transmission time interval (TTI) in which the MAC CE is received.
4. A method by a base station in a wireless communication system, the method comprising:
transmitting, via a radio resource control (RRC) signaling to a terminal, first information configuring one or more channel state information reference signal (CSI-RS) resources;
transmitting, on a serving cell to the terminal, a medium access control (MAC) control element (CE) indicating activation or deactivation of the one or more CSI-RS resources of the serving cell for each of channel state information (CSI) processes configured for the serving cell; and
transmitting at least one CSI-RS on at least one CSI-RS resource activated based on the transmitted MAC CE among the one or more CSI-RS resources,
wherein the MAC CE includes one or more CSI-RS commands, each of which corresponds to one of the CSI processes configured for the serving cell,
wherein the one or more CSI-RS commands are included in the MAC CE in an ascending order of a CSI process ID, and
wherein each of the one or more CSI-RS commands includes a plurality of bits, each bit corresponding to one of the one or more CSI-RS resources of the serving cell and indicating an activation/deactivation status for a corresponding CSI-RS resource.
5. The method of claim 4 ,
wherein second information indicating that the one or more CSI-RS resources correspond to a first CSI-RS mode from the first CSI-RS mode and a second CSI-RS mode is transmitted with the first information via the RRC signaling,
wherein a CSI-RS of the first CSI-RS mode is transmitted with a periodicity and activated or deactivated by a MAC CE, and
wherein a CSI-RS of the second CSI-RS mode is transmitted aperiodically.
6. The method of claim 4 ,
wherein information associated with the MAC CE is delivered to a physical layer of the terminal, and
wherein the information includes time information associated with a transmission time interval (TTI) in which the MAC CE is transmitted.
7. A terminal in a wireless communication system, the terminal comprising:
a transceiver configured to transmit or receive a signal; and
a controller configured to:
receive, via a radio resource control (RRC) signaling from a base station, first information configuring one or more channel state information reference signal (CSI-RS) resources,
receive, on a serving cell from the base station, a medium access control (MAC) control element (CE) indicating activation or deactivation of the one or more CSI-RS resources of the serving cell for each of channel state information (CSI) processes configured for the serving cell,
deliver information on the received MAC CE to a lower layer, for activating a reception of CSI-RS on at least one CSI-RS resource among the one or more CSI-RS resources of the serving cell, and
receive at least one CSI-RS on the at least one CSI-RS resource among the one or more CSI-RS resources based on the information,
wherein the MAC CE includes one or more CSI-RS commands, each of which corresponds to one of the CSI processes configured for the serving cell,
wherein the one or more CSI-RS commands are included in the MAC CE in an ascending order of a CSI process ID, and
wherein each of the one or more CSI-RS commands includes a plurality of bits, each bit corresponding to one of the one or more CSI-RS resources of the serving cell and indicating an activation/deactivation status for a corresponding CSI-RS resource.
8. The terminal of claim 7 ,
wherein second information indicating that the one or more CSI-RS resources correspond to a first CSI-RS mode from the first CSI-RS mode and a second CSI-RS mode is received with the first information via the RRC signaling,
wherein a CSI-RS of the first CSI-RS mode is received with a periodicity and activated or deactivated by a MAC CE, and
wherein a CSI-RS of the second CSI-RS mode is received aperiodically.
9. The terminal of claim 7 , wherein the information includes time information associated with a transmission time interval (TTI) in which the MAC CE is received.
10. A base station in a wireless communication system, the base station comprising:
a transceiver configured to transmit or receive a signal; and
a controller configured to:
transmit, via a radio resource control (RRC) signaling to a terminal, first information configuring one or more channel state information reference signal (CSI-RS) resources,
transmit, on a serving cell to the terminal, a medium access control (MAC) control element (CE) indicating activation or deactivation of the one or more CSI-RS resources of the serving cell for each of channel state information (CSI) processes configured for the serving cell, and
transmit at least one CSI-RS on at least one CSI-RS resource activated based on the transmitted MAC CE among the one or more CSI-RS resources,
wherein the MAC CE includes one or more CSI-RS commands, each of which corresponds to one of the CSI processes configured for the serving cell,
wherein the one or more CSI-RS commands are included in the MAC CE in an ascending order of a CSI process ID, and
wherein each of the one or more CSI-RS commands includes a plurality of bits, each bit corresponding to one of the one or more CSI-RS resources of the serving cell and indicating an activation/deactivation status for a corresponding CSI-RS resource.
11. The base station of claim 10 ,
wherein second information indicating that the one or more CSI-RS resources correspond to a first CSI-RS mode from the first CSI-RS mode and a second CSI-RS mode is transmitted with the first information via the RRC signaling,
wherein a CSI-RS of the first CSI-RS mode is transmitted with a periodicity and activated or deactivated by a MAC CE, and
wherein a CSI-RS of the second CSI-RS mode is transmitted aperiodically.
12. The base station of claim 10 ,
wherein information associated with the MAC CE is delivered to a physical layer of the terminal, and
wherein the information includes time information associated with a transmission time interval (TTI) in which the MAC CE is transmitted.