TECHNICAL FIELD

This application relates to wireless communication systems, and more particularly to communicating access data and backhaul data over wireless links in an integrated access backhaul (IAB) network. Embodiments enable and provide solutions and techniques for communication between wireless communication devices (e.g., base stations and user equipment devices (UEs)) in an IAB network.

INTRODUCTION

Wireless communications systems are widely deployed to provide various types of communication content such as voice, video, packet data, messaging, broadcast, and so on. These systems may be capable of supporting communication with multiple users by sharing the available system resources (e.g., time, frequency, and power). Examples of such multiple-access systems include code division multiple access (CDMA) systems, time division multiple access (TDMA) systems, frequency division multiple access (FDMA) systems, and orthogonal frequency division multiple access (OFDMA) systems, (e.g., a Long Term Evolution (LTE) system). A wireless multiple-access communications system may include several base stations (BSs), each simultaneously supporting communication for multiple communication devices, which may be otherwise known as user equipment (UE).

To meet the growing demands for expanded mobile broadband connectivity, wireless communication technologies are advancing from the LTE technology to a fifth generation (5G) new radio (NR) technology. 5G NR may provide for access traffic and backhaul traffic at gigabit-level throughput. Access traffic refers to traffic between an access node (e.g., a base station) and a UE. Backhaul traffic refers to traffic between access nodes or traffic between an access node and a core network.

BRIEF SUMMARY OF SOME EXAMPLES

The following summarizes some aspects of the present disclosure to provide a basic understanding of the discussed technology. This summary is not an extensive overview of all contemplated features of the disclosure and is intended neither to identify key or critical elements of all aspects of the disclosure nor to delineate the scope of any or all aspects of the disclosure. Its sole purpose is to present some concepts of one or more aspects of the disclosure in summary form as a prelude to the more detailed description that is presented later.

For example, in an aspect of the disclosure, a method of wireless communication may include transmitting, by the first wireless communication device, a first transmission to the second wireless device during a first one of the plurality of slots; and receiving, by the first wireless communication device, a second transmission from the second wireless device during a second one of the plurality of slots, the second transmission including link quality information about the first transmission and scheduling a third transmission between the first and second wireless devices.

In some aspects, a method of wireless communication may include transmitting, by the first wireless communication device, a first transmission to the second wireless device during a first one of the plurality of slots; and receiving, by the first wireless communication device, a second transmission from the second wireless device during a second one of the plurality of slots, the second transmission including link quality information about the first transmission and scheduling a third transmission between the first and second wireless devices, wherein the third transmission is transmitted by the second node and received by the first node.

In another aspect, a method of wireless communication may include transmitting, by the first wireless communication device, a first transmission to the second wireless device during a first one of the plurality of slots; and receiving, by the first wireless communication device, a second transmission from the second wireless device during a second one of the plurality of slots, the second transmission including link quality information about the first transmission and scheduling a third transmission between the first and second wireless devices, wherein the third transmission is transmitted by the first node and received by the second node.

In the foregoing aspects, each of the plurality of slots may include a control channel and a data channel, and the link quality information is transmitted in a control channel of the second slot or in a data channel of the second slot. In another aspect each of the plurality of slots includes a control channel and a data channel, and the ACK/NACK is transmitted in a control channel of the second slot or in a data channel of the second slot.

In some aspects a method of wireless communication may include transmitting, by the first wireless communication device, a first transmission to the second wireless device during a first one of the plurality of slots; and receiving, by the first wireless communication device, a second transmission from the second wireless device during a second one of the plurality of slots, the second transmission including link quality information about the first transmission and scheduling a third transmission between the first and second wireless devices, wherein the link quality information about the first transmission includes a least one or more combinations of CQI, reference signal received power (RSRP), signal to noise ratio (SNR), reference signal received quality (RSRQ), RSSI, beam index, beam coherence time, and beam quality.

In some aspects a method of wireless communication may include transmitting, by the first wireless communication device, a first transmission to the second wireless device during a first one of the plurality of slots; and receiving, by the first wireless communication device, a second transmission from the second wireless device during a second one of the plurality of slots, the second transmission including link quality information about the first transmission and scheduling a third transmission between the first and second wireless devices, wherein the second transmission includes an ACK/NACK for data transmitted during the first transmission.

In other aspects, a method of wireless communication may include transmitting, by the first wireless communication device, a first transmission to the second wireless device during a first one of the plurality of slots; and receiving, by the first wireless communication device, a second transmission from the second wireless device during a second one of the plurality of slots, the second transmission including link quality information about the first transmission and scheduling a third transmission between the first and second wireless devices, wherein the second transmission includes a scheduling request (SR) for the first device to send a fourth transmission to the second device. The SR may be transmitted in a control channel or in a data channel.

In other aspects, user equipment for wireless communications may include a radio transceiver; a processor; and a memory; wherein the processor is in electrical communication with the transceiver and the memory; and wherein the memory is configured with instructions to cause the processor to implement any of the methods of the preceding aspects.

Other aspects, features, and embodiments of the present invention will become apparent to those of ordinary skill in the art, upon reviewing the following description of specific, exemplary embodiments of the present invention in conjunction with the accompanying figures. While features of the present invention may be discussed relative to certain embodiments and figures below, all embodiments of the present invention can include one or more of the advantageous features discussed herein. In other words, while one or more embodiments may be discussed as having certain advantageous features, one or more of such features may also be used in accordance with the various embodiments of the invention discussed herein. In similar fashion, while exemplary embodiments may be discussed below as device, system, or method embodiments it should be understood that such exemplary embodiments can be implemented in various devices, systems, and methods.

