Techniques and apparatuses for channel interference reduction

Abstract

A base station (BS) may transmit, and a user equipment (UE) may receive, a physical broadcast channel, such as a narrowband physical broadcast channel (NB-PBCH). In an interference-limited scenario with synchronous cells in a network, repetitions of a symbol being transmitted for a first physical broadcast channel of a first cell may collide with repetitions of a symbol being transmitted for a second physical broadcast channel of a second cell. This may result in the UE being unable to recover symbols of a physical broadcast channel. In some aspects, the BS may transmit, and the UE may receive, a physical broadcast channel including bits processed using a first processing stage, such as using first scrambling sequences, and a second processing stage, such as using second scrambling sequences, to compensate for the interference, thereby ensuring that the UE can recover the symbols of the physical broadcast channel.

Description

technical field [0001] In general, aspects of the present disclosure relate to wireless communications, and more specifically, aspects of the present disclosure relate to techniques and apparatus for channel interference reduction. Background technique [0002] Wireless communication systems are widely deployed to provide various telecommunication services such as telephony, video, data, messaging, and broadcast. Typical wireless communication systems may employ multiple-access techniques capable of supporting communication with multiple users by sharing available system resources (eg, bandwidth, transmit power, and / or the like). Examples of such multiple access techniques include Code Division Multiple Access (CDMA) systems, Time Division Multiple Access (TDMA) systems, Frequency Division Multiple Access (FDMA) systems, Orthogonal Frequency Division Multiple Access (OFDMA) systems, Single Carrier Frequency Division Multiple Access (SC-FDMA) system, Time Division Synchronou...

AI Technical Summary

Problems solved by technology

However, in an interference-limited scenario for synchronous cells, the repetition of the first symbol of the first cell may interfere with the repetition of the second symbol of the second cell

A UE to receive a first symbol via a first physical broadcast channel of a first cell may not be able to perform averaging to overcome interference from a second physical broadcast channel transmitted by a second cell

In addition, since the repetition of the first symbol of the first cell and the repetition of the second symbol of the second cell remain unchanged on each repetition set, the UE may not be able to reduce interference through symbol combining techniques

Images