TECHNICAL FIELD

The present disclosure generally relates to communication systems and, in particular, to adapting parameters for communication between a user equipment (UE) and a base station.

BACKGROUND

To meet the increased demand for wireless data services since the deployment of 4th-Generation (4G) communication systems, efforts have been made to develop an improved 5th-Generation (5G) or pre-5G communication system. Therefore, the 5G or pre-5G communication system is also called a ‘Beyond 4G Network’ or a ‘Post LTE System’. A 5G communication system can be implemented in higher frequency (mmWave) bands, e.g., 60 GHz bands, compared to a 4G communication system to provide higher data rates. To decrease a propagation loss of radio waves and increase a transmission distance, beamforming, massive multiple-input multiple-output (MIMO), Full Dimensional MIMO (FD-MIMO), array antenna, analog beamforming, and large scale antenna techniques are considered in 5G communication systems. In addition, in 5G communication systems, development for system network improvement is under way based on advanced small cells, cloud Radio Access Networks (RANs), ultra-dense networks, device-to-device (D2D) communication, wireless backhaul, moving network, cooperative communication, Coordinated Multi-Points (CoMP), reception-end interference cancellation and the like. In the 5G system, Hybrid FSK and QAM Modulation (FQAM) and sliding window superposition coding (SWSC) as an advanced coding modulation (ACM), and filter bank multi carrier (FBMC), non-orthogonal multiple access (NOMA), and sparse code multiple access (SCMA) as an advanced access technology have been developed.

To reduce UE power consumption in wireless communication systems, there is a need to design an adaptation procedure for a UE operation and enable a UE to transmit an adaptation request to a serving base station (gNB) or enable a gNB to transmit an adaptation request to the UE that can be facilitated by assistance information from the UE. There is another need to specify UE adaptation schemes for UE power consumption characteristics in frequency, time, and antenna domains, in a DRX configuration, and in a UE processing timeline. There is yet another need to design a downlink physical layer signal/channel for signaling from a gNB to a UE an adaptation of parameters in the UE operation. There is yet another need to design an uplink physical layer signal/channel for a UE to signal an adaptation request to a gNB for parameters in the UE operation. There is yet another need to specify parameters that comprise assistance information that a UE transmits to a gNB to enable the gNB to determine an adaptation for parameters in the UE operation.

SUMMARY

The present disclosure relates to a pre-5G or 5G communication system to be provided for supporting higher data rates beyond 4G communication system such as Long Term Evolution (LTE).

In one embodiment, a UE includes a transceiver configured to receive an adaptation request (AR) via a downlink control information (DCI) format in a physical downlink control channel (PDCCH). The UE further includes a processor operably connected to the transceiver. The processor is configured to configure the transceiver to operate in a first state associated with a reception of a first DCI format in a first search space set in response to an AR reception outcome, and configure the transceiver to operate in a second state associated with a reception of a second DCI format in a second search space set.

In another embodiment, a base station (BS) includes a transceiver configured to transmit an adaptation request (AR) via a downlink control information (DCI) format in a physical downlink control channel (PDCCH). The BS further includes a processor operably connected to the transceiver. The processor is configured to configure the transceiver to operate in a first state associated with a transmission of a first DCI format in a first search space set depending on the AR transmission, and configure the transceiver to operate in a second state associated with a transmission of a second DCI format in a second search space set.

In another embodiment, a method for a UE to configure a receiver is provided. The method includes receiving an adaptation request (AR) via a downlink control information (DCI) format in a physical downlink control channel (PDCCH), and configuring the receiver to operate in a first state associated with a reception of a first DCI format in a first search space set in response to an AR reception outcome, and configuring the receiver to operate in a second state associated with a reception of a second DCI format in a second search space set.

Other technical features may be readily apparent to one skilled in the art from the following figures, descriptions, and claims.

Before undertaking the DETAILED DESCRIPTION below, it may be advantageous to set forth definitions of certain words and phrases used throughout this patent document. The term “couple” and its derivatives refer to any direct or indirect communication between two or more elements, whether or not those elements are in physical contact with one another. The terms “transmit,” “receive,” and “communicate,” as well as derivatives thereof, encompass both direct and indirect communication. The terms “include” and “comprise,” as well as derivatives thereof, mean inclusion without limitation. The term “or” is inclusive, meaning and/or. The phrase “associated with,” as well as derivatives thereof, means to include, be included within, interconnect with, contain, be contained within, connect to or with, couple to or with, be communicable with, cooperate with, interleave, juxtapose, be proximate to, be bound to or with, have, have a property of, have a relationship to or with, or the like. The term “controller” means any device, system or part thereof that controls at least one operation. Such a controller may be implemented in hardware or a combination of hardware and software and/or firmware. The functionality associated with any particular controller may be centralized or distributed, whether locally or remotely. The phrase “at least one of,” when used with a list of items, means that different combinations of one or more of the listed items may be used, and only one item in the list may be needed. For example, “at least one of: A, B, and C” includes any of the following combinations: A, B, C, A and B, A and C, B and C, and A and B and C.

Moreover, various functions described below can be implemented or supported by one or more computer programs, each of which is formed from computer readable program code and embodied in a computer readable medium. The terms “application” and “program” refer to one or more computer programs, software components, sets of instructions, procedures, functions, objects, classes, instances, related data, or a portion thereof adapted for implementation in a suitable computer readable program code. The phrase “computer readable program code” includes any type of computer code, including source code, object code, and executable code. The phrase “computer readable medium” includes any type of medium capable of being accessed by a computer, such as read only memory (ROM), random access memory (RAM), a hard disk drive, a compact disc (CD), a digital video disc (DVD), or any other type of memory. A “non-transitory” computer readable medium excludes wired, wireless, optical, or other communication links that transport transitory electrical or other signals. A non-transitory computer readable medium includes media where data can be permanently stored and media where data can be stored and later overwritten, such as a rewritable optical disc or an erasable memory device.

Definitions for other certain words and phrases are provided throughout this patent document. Those of ordinary skill in the art should understand that in many if not most instances, such definitions apply to prior as well as future uses of such defined words and phrases.

