Timing and frame structure in an integrated access backhaul (iab) network

Abstract

Wireless communications systems and methods related to communicating in an integrated access backhaul (IAB) network are provided. A first wireless communication device receives synchronization information associated with one or more wireless communication of a multi-hop wireless network. The first wireless communication device determines a transmission timing adjustment for a second wireless communication device of the one or more wireless communication devices based on at least some of the synchronization information. The first wireless communication device transmits a message instructing the second wireless communication device to communicate with a third wireless communication device of the one or more wireless communication devices based on the transmission timing adjustment.

What is claimed is: 
     
         1 . A method of wireless communication performed by a first wireless communication device, comprising:
 receiving, from one or more wireless communication devices of a wireless network, timing information associated with the one or more wireless communication devices;   determining a gap period associated with a transition between transmitting and receiving for a second wireless communication device of the one or more wireless communication devices based on the timing information; and   communicating, with the second wireless communication device according to the determined gap period, a communication.   
     
     
         2 . The method of  claim 1 , wherein the gap period is a first gap period, further comprising:
 determining a second gap period associated with a second transition between transmitting and receiving for a third wireless communication device of the one or more wireless communication devices based on the timing information; and   communicating, with the third wireless communication device according to the determined second gap period, a second communication.   
     
     
         3 . The method of  claim 1 , further comprising:
 transmitting, to the second wireless communication device, an indication of the determined gap period.   
     
     
         4 . The method of  claim 3 , wherein the transmitting the indication comprises transmitting the indication in a media access control-control element (MAC-CE) message. 
     
     
         5 . The method of  claim 3 , wherein the transmitting the indication comprises transmitting the indication in a semi-static scheduling configuration message. 
     
     
         6 . The method of  claim 1 , further comprising:
 communicating, with each of the one or more wireless communication devices according to the determined gap period, a respective communication.   
     
     
         7 . The method of  claim 1 , wherein the timing information includes a transmit-receive switching requirement associated with at least one of the one or more wireless communication devices. 
     
     
         8 . The method of  claim 1 , wherein the timing information includes a synchronization reference switching requirement associated with at least one of the one or more wireless communication devices. 
     
     
         9 . The method of  claim 1 , wherein the transition between transmitting and receiving is a transition from receiving to transmitting by the second wireless communication device. 
     
     
         10 . The method of  claim 9 , wherein the communicating comprises:
 receiving, by the first wireless communication device from the second wireless communication device, an uplink signal; and   transmitting, by the first wireless communication device to the second wireless communication device, a downlink signal after the gap period after receiving the uplink signal.   
     
     
         11 . A method of wireless communication performed by a first wireless communication device, comprising:
 transmitting, to a second wireless communication device, timing information associated with the first wireless communication device; and   communicating a communication with the second wireless communication device according to a gap period determined by the second wireless communication device based on the timing information,   wherein the gap period is associated with a transition between transmitting and receiving for the first wireless communication device.   
     
     
         12 . The method of  claim 11 , further comprising:
 receiving, from the second wireless communication device, an indication of the determined gap period.   
     
     
         13 . The method of  claim 12 , wherein the receiving the indication comprises receiving the indication in a media access control-control element (MAC-CE) message. 
     
     
         14 . The method of  claim 12 , wherein the receiving the indication comprises receiving the indication in a semi-static scheduling configuration message. 
     
     
         15 . The method of  claim 11 , wherein the timing information includes a transmit-receive switching requirement associated with the first wireless communication device. 
     
     
         16 . The method of  claim 11 , wherein the timing information includes a synchronization reference switching requirement associated with the first wireless communication device. 
     
     
         17 . The method of  claim 11 , wherein the transition between transmitting and receiving is a transition from receiving to transmitting by the first wireless communication device. 
     
     
         18 . The method of  claim 17 , wherein the communicating comprises:
 transmitting, to the second wireless communication device, an uplink signal; and   receiving, from the second wireless communication device, a downlink signal after the gap period after receiving the uplink signal.   
     
     
         19 . A first wireless communication device, comprising:
 at least one memory;   at least one transceiver; and   at least one processor in communication with the at least one memory and the at least one transceiver, wherein the first wireless communication device is configured to:   receive, from one or more wireless communication devices of a wireless network, timing information associated with the one or more wireless communication devices;   determine a gap period associated with a transition between transmitting and receiving for a second wireless communication device of the one or more wireless communication devices based on the timing information; and   communicate, with the second wireless communication device according to the determined gap period, a communication.   
     
     
         20 . The first wireless communication device of  claim 19 , wherein the gap period is a first gap period, and the first wireless communication device is further configured to:
 determine a second gap period associated with a second transition between transmitting and receiving for a third wireless communication device of the one or more wireless communication devices based on the timing information; and   communicate, with the third wireless communication device according to the determined second gap period, a second communication.   
     
     
         21 . The first wireless communication device of  claim 19 , wherein the first wireless communication device is further configured to transmit, to the second wireless communication device, an indication of the determined gap period. 
     
     
         22 . The first wireless communication device of  claim 21 , wherein the first wireless communication device is configured to transmit transmitting the indication the indication in a media access control-control element (MAC-CE) message. 
     
     
         23 . A first wireless communication device, comprising:
 at least one memory;   at least one transceiver; and   at least one processor in communication with the at least one memory and the at least one transceiver, wherein the first wireless communication device is configured to:   transmit, to a second wireless communication device, timing information associated with the first wireless communication device; and   communicate a communication with the second wireless communication device according to a gap period determined by the second wireless communication device based on the timing information, wherein the gap period is associated with a transition between transmitting and receiving for the first wireless communication device.   
     
     
         24 . The first wireless communication device of  claim 23 , wherein the first wireless communication device is further configured to receive, from the second wireless communication device, an indication of the determined gap period. 
     
     
         25 . The first wireless communication device of  claim 24 , wherein the first wireless communication device is configured to receive the indication in a media access control-control element (MAC-CE) message. 
     
     
         26 . The first wireless communication device of  claim 24 , wherein the receiving the indication comprises receiving the indication in a semi-static configuration message. 
     
     
         27 . The first wireless communication device of  claim 23 , wherein the timing information includes a transmit-receive switching requirement associated with the first wireless communication device. 
     
     
         28 . The first wireless communication device of  claim 23 , wherein the timing information includes a synchronization reference switching requirement associated with the first wireless communication device. 
     
     
         29 . The first wireless communication device of  claim 23 , wherein the transition between transmitting and receiving is a transition from receiving to transmitting by the first wireless communication device. 
     
     
         30 . The first wireless communication device of  claim 29 , wherein the communicating comprises:
 transmitting, to the second wireless communication device, an uplink signal; and   receiving, from the second wireless communication device, a downlink signal after the gap period after receiving the uplink signal.   
     
     
         31 . The method of  claim 1 , wherein the timing information includes a synchronization reference switching requirement associated with at least one of the one or more wireless communication devices. 
     
     
         32 . The method of  claim 11 , wherein the timing information includes a synchronization reference switching requirement associated with the first wireless communication device. 
     
     
         33 . The first wireless communication device of  claim 19 , wherein the timing information includes a synchronization reference switching requirement associated with the first wireless communication device. 
     
     
         34 . The first wireless communication device of  claim 23 , wherein the timing information includes a synchronization reference switching requirement associated with the first wireless communication device.