Samsung Electronics Co., Ltd. (Suwon-si, KR)

Methods and apparatuses for reporting a precoding matrix indicator (PMI). A processor is a component of a user device (UE) which produces a report for the PMI. The report includes (i) the wideband amplitude coefficient indicator that is common to the various subbands used to report and (ii) an amplitude subband coefficient indicator and an indicator for the subband’s phase for each of the subbands. A transceiver is also present in the UE. The transceiver is intended to transmit the generated PMI report to a base station.

Knowing and accurately estimating the channel in an advance wireless communication system that connects a user device (UE) and an eNode (eNB) is important for effective and efficient wireless communication. In order to correctly estimatethe channel’s parameters, the UE may report (e.g. feedback) information about channel measurement, e.g., CSI, to the eNB. With this information on the channel it is possible that the eNB is able to select the right parameters for communication in order to efficiently andeffectively perform wireless data communication with the UE. The number of wireless communication devices has grown, as have the antennas and channels. This implies that the amount of feedback needed to accurately assess the channel has increased. The additional overheads could result in unwanted channel feedback that could reduce the efficiency of wireless communication. For instance the rate of data transmission could decrease.

The present disclosure describes methods and apparatuses for reporting CSI schemes based upon an unidirectional bit allocation in an advanced wireless communication system.

In one particular embodiment the UE is used. The UE comprises a processor configured to generate an report that is the precoding matrix indicator (PMI). The report contains (i) the broadband amplitude indicator that is shared by several subbands that are configured to be reported and (ii) the subband indicator and a subband’s phase indicator for every subband. The UE further includes an operating transceiver connected to the processor. The transceiver can be configured to send the generated report of the PMI to the base station.

A base station (BS), is another variant. The BS includes a transceiver configured to receive a report from a PMI. The report contains (i) an amplitude wideband coefficient indicator that is common to the various subbands that are configured for reporting and (ii) an subband amplitude coefficient indicator as well as an indicator of the subband’s phase coefficient for each subband. The BS also contains a processor operably connected to the transceiver.

A method for reporting a PMI to a UE in another embodiment is also offered. This method creates an report for an PMI. The report comprises (i) a wideband amplitude coefficient indicator that is common for several subbands configured for reporting , and (ii) an amplitude subband coefficient indicator and an indicator of the subband’s phase coefficient for each subband. The method also includes sending the report generated for PMI to an appropriate station.

Other technical characteristics may be readily apparent to anyone skilled in the art from the following illustrations, descriptions, and claims.

Before proceeding to the DETAILED DESCRIPTION below it is possible to provide definitions for certain words and phrases used throughout the patent document. The term “couple” and its derivatives refer to any direct or indirectcommunication between two or more elements, whether or not those elements are in physical contact with one another. The terms “transmit,”” “receive,” or “communicate” refer to direct and indirect communication between two or more elements. The word “or” means inclusive. all inclusive, refers to and/or. The expression “associated with,” and variants of it, means to encompass, be contained within,interconnect with, contain, be connected to, be contained within or with, couple to or with, be communicable with, collaborate with, interleave, or juxtapose and be close to, be affixed to or by, possess an attribute of, be in a relationship to or with, or similar to. Any device, system, or part of a system that controls at least one function is referred to as controller. The controller may be implemented as software, hardware, or firmware. The capabilities of a controller can be distributed or centralized, whether locally or remotely. The phrase “at at least one of” when used in conjunction with an inventory of items means that different combinations of any of the listed items can be used, and only one item from the list could be required. If you choose to use the phrase “at least one of” A, B, and C it implies that at least one of the following combinations can be utilized: A, B, C and A&B. BandC, AandC A&B and C BandC, A&C, AandB and C.

Furthermore, the various functions discussed below are able to be executed or performed by one or more computer programs that are formed from computer readable program code, and then incorporated into an electronic medium that can be read by computers. “Program” and “application” refer to a set of computer programs, their components, instructions, procedures functions, and objects. They can also be utilized to execute or support different functions. The phrase “computer readable medium” encompasses any media that can be accessed by a computer that can be read only memory (ROM) or random access memory (RAM) or the hard disk drive or compact disc (CD), digital video disc (DVD), or any other type of memory. The term “non-transitory computer-readable medium” excludes wired and wireless communications, optical, and other communication systems that transmit transitory electrical signals. Non-transitory computer-readable media include media that keep data forever and also be rewritten later on by erasable memory device or rewritable optical disk.

This patent document contains definitions of certain terms and phrases. Anyone with a basic understanding of the art should understand that in many if not most instances these definitions will apply to prior as well as future applications of such specified terms and phrases.

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