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 by a terminal in a wireless communication system, the method comprising:
receiving, via a radio resource control (RRC) signaling from a base station in the wireless communication system, 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 at least one channel state information (CSI) process configured for the terminal;
identifying the activation or deactivation of the one or more CSI-RS resources of the serving cell for the at least one CSI process based on the received MAC CE; and
receiving at least one CSI-RS via at least one activated CSI-RS resource of the one or more CSI-RS resources based on the identifying,
wherein the MAC CE includes at least one CSI-RS command, each of which corresponds to one CSI process related to at least one CSI-RS resource,
wherein the at least one CSI-RS command is included in the MAC CE in an ascending order of a CSI process ID, and
wherein a CSI-RS command includes a plurality of bits, each of which indicates an activation/deactivation status of a corresponding CSI-RS resource for a CSI process.
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 identifying further comprises delivering information associated with the MAC CE to a lower layer.
4. The method of claim 3 , wherein the information associated with the MAC CE includes time information associated with a transmission time interval (TTI) in which the MAC CE is received.
5. 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 in the wireless communication system, 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 at least one channel state information (CSI) process configured for the terminal, wherein the one or more CSI-RS resources of the serving cell for the at least one CSI process is activated or deactivated to correspond with the MAC CE; and
transmitting at least one CSI-RS via at least one activated CSI-RS resource of the one or more CSI-RS resources,
wherein the MAC CE includes at least one CSI-RS command, each of which corresponds to one CSI process related to at least one CSI-RS resource,
wherein the at least one CSI-RS command is included in the MAC CE in an ascending order of a CSI process ID, and
wherein a CSI-RS command includes a plurality of bits, each of which indicates an activation/deactivation status of a corresponding CSI-RS resource for a CSI process.
6. The method of claim 5 ,
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.
7. The method of claim 5 , wherein information associated with the MAC CE is delivered to a lower layer of the terminal.
8. The method of claim 7 , wherein the information associated with the MAC CE includes time information associated with a transmission time interval (TTI) in which the MAC CE is transmitted.
9. A terminal in a wireless communication system, the terminal comprising:
a transceiver configured to transmit and receive a signal; and
a controller configured to:
receive, via a radio resource control (RRC) signaling from a base station in the wireless communication system, 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 at least one channel state information (CSI) process configured for the terminal,
identify the activation or deactivation of the one or more CSI-RS resources of the serving cell of the at least one CSI process based on the received MAC CE, and
receive at least one CSI-RS via at least one activated CSI-RS resource of the one or more CSI-RS resources based on the identifying,
wherein the MAC CE includes at least one CSI-RS command, each of which corresponds to one CSI process related to at least one CSI-RS resource,
wherein the at least one CSI-RS command is included in the MAC CE in an ascending order of a CSI process ID, and
wherein a CSI-RS command includes a plurality of bits, each of which indicates an activation/deactivation status of a corresponding CSI-RS resource for a CSI process.
10. The terminal of claim 9 ,
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.
11. The terminal of claim 9 , wherein the controller is further configured to deliver information associated with the MAC CE to a lower layer.
12. The terminal of claim 11 , wherein the information associated with the MAC CE includes time information associated with a transmission time interval (TTI) in which the MAC CE is received.
13. A base station in a wireless communication system, the base station comprising:
a transceiver configured to transmit and receive a signal; and
a controller configured to:
transmit, via a radio resource control (RRC) signaling to a terminal in the wireless communication system, 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 at least one channel state information (CSI) process configured for the terminal, wherein the one or more CSI-RS resources of the serving cell for the at least one CSI process is activated or deactivated to correspond with the MAC CE, and
transmit at least one CSI-RS via at least one activated CSI-RS resource of the one or more CSI-RS resources,
wherein the MAC CE includes at least one CSI-RS command, each of which corresponds to one CSI process related to at least one CSI-RS resource,
wherein the at least one CSI-RS command is included in the MAC CE in an ascending order of a CSI process ID, and
wherein a CSI-RS command includes a plurality of bits, each of which indicates an activation/deactivation status of a corresponding CSI-RS resource for a CSI process.
14. The base station of claim 13 ,
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.
15. The base station of claim 13 , wherein information associated with the MAC CE is delivered to a lower layer of the terminal.
16. The base station of claim 15 , wherein the information associated with the MAC CE includes time information associated with a transmission time interval (TTI) in which the MAC CE is transmitted.