# US 12,004,195 B2 · Local coordination to support spatial division multiplex operation in integrated access and backhaul networks > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,004,195 B2 - Document ID: US12004195B2 - Status: Granted - Kind: B2 - Application number: 17/806,819 - Filed: 2022-06-14 - Published: 2022-09-29 - Granted: 2024-06-04 - Earliest claimed: 2019-04-19 - Assignees: QUALCOMM Incorporated - Applicants: QUALCOMM Incorporated - Inventors: Navid Abedini; Jianghong Luo; Andrzej Partyka; Luca Blessent; Karl Georg Hampel; Junyi Li; Tao Luo - Web page: https://patentgrep.com/patent/US12004195B2 ## CPC - H04W 72/27: between access points - H04W 84/047: {using dedicated repeater stations} - H04B 7/022: Site diversity; Macro-diversity (using two or more spaced independent antennas H04B7/04) - H04B 7/0617: {for beam forming} - H04B 7/0697: {using spatial multiplexing} - H04W 28/16: Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service] - H04W 72/046: {the resource being in the space domain, e.g. beams} - H04W 72/20: Control channels or signalling for resource management - H04W 72/29: between an access point and the access point controlling device - H04W 88/085: {Access point devices with remote components} - H04W 92/20: between access points - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - H04B: TRANSMISSION ## Abstract A configuration for local coordination between the child node and parent node to enable SDM communication between the parent and child node, without input or interaction from the CU. The apparatus receives, from a CU, an indication including an allocation of resources. The apparatus determines a type of communication with a second node based on the allocation of resources. The apparatus communicates with the second node based on the determined type of communication and utilizing the allocated resources. The apparatus coordinates with a parent node to utilize the allocated resources in an SDM operation between the child node and the parent node. ## Claims ### Claim 1 A method of wireless communication at a child node, comprising: reporting a duplexing capability to a central unit (CU); receiving, from the CU, a first indication including an allocation of resources; utilizing the allocation of resources to communicate with a second node based on a type indicated for respective resources in the allocation of resources; and coordinating with a parent node to utilize the allocation of resources based on communication with the second node. ### Claim 2 (depends on 1) The method of claim 1, wherein coordinating with the parent node comprises: transmitting information to the parent node prior to communicating with the second node, the information indicating one or more capabilities or conditions of a spatial division multiplex (SDM) operation of the child node. ### Claim 3 (depends on 2) The method of claim 2, wherein the information includes a schedule for the parent node to communicate with the child node. ### Claim 4 (depends on 3) The method of claim 3, wherein the schedule includes instructions for the parent node to utilize a subset of the allocation of resources to communicate with the child node. ### Claim 5 (depends on 2) The method of claim 2, wherein the conditions of the SDM operation of the child node are set by the CU or the child node. ### Claim 6 (depends on 2) The method of claim 2, wherein the information indicates a configuration of spatial resources for communicating with the child node. ### Claim 7 (depends on 6) The method of claim 6, wherein the configuration of the spatial resources indicates one or more beams or links for communicating with the child node. ### Claim 8 (depends on 1) The method of claim 1, further comprising: receiving, from the parent node, a schedule including a configuration for additional communication between the parent node and the child node; determining, by the child node, whether the configuration for the additional communication provided in the schedule is supported by the child node; and adjusting, by the child node, the communication with the second node when the configuration for the additional communication provided in the schedule is supported by the child node. ### Claim 9 (depends on 8) The method of claim 8, wherein coordinating with the parent node further comprises: transmitting a feedback signal to the parent node in response to receipt of the schedule from the parent node, the feedback signal indicating whether the child node supports the configuration for the additional communication provided in the schedule; and receiving, from the parent node, an updated schedule in response to the feedback signal when the child node is configured to support the configuration provided in the schedule. ### Claim 10 (depends on 1) The method of claim 1, wherein the CU has labeled the allocation of resources for at least the child node as HARD, wherein the child node determines the type of the communication with the second node based on a labeling of the allocation of resources. ### Claim 11 (depends on 1) The method of claim 1, further comprising: receiving, from the parent node, a third indication that the allocation of resources are available, wherein the child node utilizes the allocation of resources in accordance with the third indication from the parent node. ### Claim 12 (depends on 11) The method of claim 11, wherein coordinating with the parent node further comprises: transmitting, to the parent node, a feedback signal prior to receiving the third indication from the parent node that the allocation of resources are available, wherein the feedback signal includes one or more capabilities or conditions of a spatial division multiplex (SDM) operation of the child node. ### Claim 13 (depends on 12) The method of claim 12, wherein the feedback signal includes a schedule for the child node to communicate with the parent node. ### Claim 14 (depends on 12) The method of claim 12, wherein the feedback signal includes suggested conditions in a manner in which the parent node utilizes its allocation of resources. ### Claim 15 (depends on 11) The method of claim 11, wherein the third indication, from the parent node, that the allocation of resources are available further indicates whether use of the allocation of resources by the child node is unconditional or subject to conditions. ### Claim 16 (depends on 11) The method of claim 11, wherein coordinating with the parent node further comprises: transmitting, to the parent node, a feedback signal after utilizing the allocation of resources, the feedback signal including one or more capabilities or conditions of a spatial division multiplex (SDM) operation of the child node; and receiving, from the parent node, an updated schedule in response to the feedback signal when the parent node is configured to support the SDM operation of the child node. ### Claim 17 (depends on 16) The method of claim 16, wherein the feedback signal includes a schedule including a configuration for additional communication between the parent node and the child node. ### Claim 18 (depends on 11) The method of claim 11, wherein the CU has labeled the allocation of resources for the child node as SOFT, wherein the child node determines the type of the communication with the second node based on a labeling of the allocation of resources. ### Claim 19 (depends on 1) The method of claim 1, wherein the type determined for the communication comprises a spatial division multiplex (SDM) operation between the child node and the parent node. ### Claim 20 (depends on 1) The method of claim 1, wherein coordinating with the parent node includes providing information, to the parent node, indicating one or more transmit or receive beams for communicating with the child node. ### Claim 21 (depends on 1) The method of claim 1, wherein, for each of the respective resources, the type includes one of hard, soft, or unavailable. ### Claim 22 An apparatus for wireless communication at a child node, comprising: means for reporting a duplexing capability to a central unit (CU); means for receiving, from the CU, a first indication including an allocation of resources; means for utilizing the allocation of resources to communicate with a second node based on a type indicated for respective resources in the allocation of resources; and means for coordinating with a parent node to utilize the allocation of resources based on communication with the second node. ### Claim 23 (depends on 22) The apparatus of claim 22, wherein the means for coordinating with the parent node comprises: means for transmitting information to the parent node prior to communicating with the second node, the information indicating one or more capabilities or conditions of a spatial division multiplex (SDM) operation of the child node. ### Claim 24 (depends on 23) The apparatus of claim 23, wherein the information includes a schedule for the parent node to communicate with the child node. ### Claim 25 (depends on 24) The apparatus of claim 24, wherein the schedule includes instructions for the parent node to utilize a subset of the allocation of resources to communicate with the child node. ### Claim 26 (depends on 23) The apparatus of claim 23, wherein the conditions of the SDM operation of the child node are set by the CU or the child node. ### Claim 27 (depends on 23) The apparatus of claim 23, wherein the information indicates a configuration of spatial resources for communicating with the child node. ### Claim 28 (depends on 27) The apparatus of claim 27, wherein the configuration of the spatial resources indicates one or more beams or links for communicating with the child node. ### Claim 29 (depends on 22) The apparatus of claim 22, further comprising: means for receiving, from the parent node, a schedule including a configuration for additional communication between the parent node and the child node; means for determining, by the child node, whether the configuration for the additional communication provided in the schedule is supported by the child node; and means for adjusting, by the child node, the communication with the second node when the configuration for the additional communication provided in the schedule is supported by the child node. ### Claim 30 (depends on 29) The apparatus of claim 29, wherein the means for coordinating with the parent node further comprises: means for transmitting a feedback signal to the parent node in response to receipt of the schedule from the parent node, the feedback signal indicating whether the child node supports the configuration for the additional communication provided in the schedule; and means for receiving, from the parent node, an updated schedule in response to the feedback signal when the child node is configured to support the configuration provided in the schedule. ### Claim 31 (depends on 22) The apparatus of claim 22, wherein the CU has labeled the allocation of resources for at least the child node as HARD, wherein the means for determining are configured to determine the type of the communication with the second node based on a labeling of the allocation of resources. ### Claim 32 (depends on 22) The apparatus of claim 22, further comprising: means for receiving, from the parent node, a third indication that the allocation of resources are available, wherein the means for utilizing the allocation are configured to utilize the allocation of resources in accordance with the third indication from the parent node. ### Claim 33 (depends on 32) The apparatus of claim 32, wherein the means for coordinating with the parent node further comprises: means for transmitting, to the parent node, a feedback signal prior to receiving the third indication from the parent node that the allocation of resources are available, wherein the feedback signal includes one or more capabilities or conditions of a spatial division multiplex (SDM) operation of the child node. ### Claim 34 (depends on 33) The apparatus of claim 33, wherein the feedback signal includes a schedule for the child node to communicate with the parent node. ### Claim 35 (depends on 33) The apparatus of claim 33, wherein the feedback signal includes suggested conditions in a manner in which the parent node utilizes its allocation of resources. ### Claim 36 (depends on 32) The apparatus of claim 32, wherein the third indication, from the parent node, that the allocation of resources are available further indicates whether use of the allocation of resources by the child node is unconditional or subject to conditions. ### Claim 37 (depends on 32) The apparatus of claim 32, wherein the means for coordinating with the parent node comprises: means for transmitting, to the parent node, a feedback signal after utilizing the allocation of resources, the feedback signal including one or more capabilities or conditions of a spatial division multiplex (SDM) operation of the child node; and means for receiving, from the parent node, an updated schedule in response to the feedback signal when the parent node is configured to support the SDM operation of the child node. ### Claim 38 (depends on 37) The apparatus of claim 37, wherein the feedback signal includes a schedule including a configuration for additional communication between the parent node and the child node. ### Claim 39 (depends on 32) The apparatus of claim 32, wherein the CU has labeled the allocation of resources for the child node as SOFT, wherein the means for determining are configured to determine the type of the communication with the second node based on a labeling of the allocation of resources. ### Claim 40 (depends on 22) The apparatus of claim 22, wherein the type determined for the communication comprises a spatial division multiplex (SDM) operation between the child node and the parent node. ### Claim 41 An apparatus for wireless communication at a child node, comprising: a memory; and at least one processor coupled to the memory and configured to: report a duplexing capability to a central unit (CU); receive, from the CU, a first indication including an allocation of resources; utilize the allocation of resources to communicate with a second node based on a type indicated for respective resources in the allocation of resources; and coordinate with a parent node to utilize the allocation of resources based on communication with the second node. ### Claim 42 (depends on 41) The apparatus of claim 41, wherein to coordinate with the parent node, the at least one processor is configured to: transmit information to the parent node prior to communicating with the second node, the information indicating one or more capabilities or conditions of a spatial division multiplex (SDM) operation of the child node. ### Claim 43 (depends on 42) The apparatus of claim 42, wherein the information indicates a schedule for the parent node to communicate with the child node. ### Claim 44 (depends on 43) The apparatus of claim 43, wherein the schedule includes instructions for the parent node to utilize a subset of the allocation of resources to communicate with the child node. ### Claim 45 (depends on 42) The apparatus of claim 42, wherein the conditions of the SDM operation of the child node are set by the CU or the child node. ### Claim 46 (depends on 42) The apparatus of claim 42, wherein the information indicates a configuration of spatial resources for communicating with the child node. ### Claim 47 (depends on 46) The apparatus of claim 46, wherein the configuration of the spatial resources indicates one or more beams or links for communicating with the child node. ### Claim 48 (depends on 41) The apparatus of claim 41, the at least one processor further configured to: receive, from the parent node, a schedule including a configuration for additional communication between the parent node and the child node; determine whether the configuration for the additional communication provided in the schedule is supported by the child node; and adjust the communication with the second node when the configuration for the additional communication provided in the schedule is supported by the child node. ### Claim 49 (depends on 48) The apparatus of claim 48, wherein to coordinate with the parent node, the at least one processor further configured to: transmit a feedback signal to the parent node in response to receipt of the schedule from the parent node, the feedback signal indicating whether the child node supports the configuration for the additional communication provided in the schedule; and receive, from the parent node, an updated schedule in response to the feedback signal when the child node is configured to support the configuration provided in the schedule. ### Claim 50 (depends on 41) The apparatus of claim 41, the at least one processor further configured to: receive, from the parent node, a third indication that the allocation of resources are available, wherein the at least one processor is configured to utilize the allocation of resources in accordance with the third indication from the parent node. ### Claim 51 (depends on 50) The apparatus of claim 50, wherein to coordinate with the parent node, the at least one processor is configured to: transmit, to the parent node, a feedback signal prior to receiving the third indication from the parent node that the allocation of resources are available, wherein the feedback signal includes one or more capabilities or conditions of a spatial division multiplex (SDM) operation of the child node. ### Claim 52 (depends on 51) The apparatus of claim 51, wherein the feedback signal includes a schedule for the child node to communicate with the parent node. ### Claim 53 (depends on 51) The apparatus of claim 51, wherein the feedback signal includes suggested conditions in a manner in which the parent node utilizes its allocation of resources. ### Claim 54 (depends on 51) The apparatus of claim 51, wherein the feedback signal includes a schedule including a configuration for additional communication between the parent node and the child node. ### Claim 55 (depends on 50) The apparatus of claim 50, wherein to coordinate with the parent node, the at least one processor further configured to: transmit, to the parent node, a feedback signal after utilizing the allocation of resources, the feedback signal including one or more capabilities or conditions of spatial division multiplex (SDM) operation of the child node; and receive, from the parent node, an updated schedule in response to the feedback signal when the parent node is configured to support the SDM operation of the child node. ### Claim 56 (depends on 50) The apparatus of claim 50, wherein the third indication, from the parent node, that the allocation of resources are available further indicates whether use of the allocation of resources by the child node is unconditional or subject to conditions. ### Claim 57 (depends on 50) The apparatus of claim 50, wherein the CU has labeled the allocation of resources for the child node as SOFT, wherein the at least one processor is configured to determine the type of the communication with the second node based on a labeling of the allocation of resources. ### Claim 58 (depends on 41) The apparatus of claim 41, wherein the CU has labeled the allocation of resources for at least the child node as HARD, wherein the at least one processor is configured to determine the type of the communication with the second node based on a labeling of the allocation of resources. ### Claim 59 (depends on 41) The apparatus of claim 41, wherein the type determined for the communication comprises a spatial division multiplex (SDM) operation between the child node and the parent node. ### Claim 60 (depends on 41) The apparatus of claim 41, wherein to coordinate with the parent node, the at least one processor is configured to provide information, to the parent node, indicating one or more transmit or receive beams for communication with the child node. ### Claim 61 (depends on 41) The apparatus of claim 41, wherein, for each of the respective resources, the type includes one of hard, soft, or unavailable. ### Claim 62 A non-transitory computer-readable medium storing computer executable instructions that when executed by at least one processor of a child node, cause the at the child node to: report a duplexing capability to a central unit (CU); receive, from the CU, a first indication including an allocation of resources; utilize the allocation of resources to communicate with a second node based on a type indicated for respective resources in the allocation of resources; and coordinate with a parent node to utilize the allocation of resources based on communication with the second node. ### Claim 63 (depends on 62) The non-transitory computer-readable medium of claim 62, wherein to coordinate with the parent node, the computer executable instructions, when executed by the at least one processor, causes the child node to: transmit information to the parent node prior to communicating with the second node, the information indicating one or more capabilities or conditions of a spatial division multiplex (SDM) operation of the child node. ### Claim 64 (depends on 63) The non-transitory computer-readable medium of claim 63, wherein the information indicates a schedule for the parent node to communicate with the child node. ### Claim 65 (depends on 64) The non-transitory computer-readable medium of claim 64, wherein the schedule includes instructions for the parent node to utilize a subset of the allocation of resources to communicate with the child node. ### Claim 66 (depends on 63) The non-transitory computer-readable medium of claim 63, wherein the conditions of the SDM operation of the child node are set by the CU or the child node. ### Claim 67 (depends on 63) The non-transitory computer-readable medium of claim 63, wherein the information indicates a configuration of spatial resources for communicating with the child node. ### Claim 68 (depends on 67) The non-transitory computer-readable medium of claim 67, wherein the configuration of spatial resources indicates one or more beams or links for communicating with the child node. ### Claim 69 (depends on 62) The non-transitory computer-readable medium of claim 62, wherein the computer executable instructions, when executed by the at least one processor, further causes the child node to: receive, from the parent node, a schedule including a configuration for additional communication between the parent node and the child node; determine, by the child node, whether the configuration for the additional communication provided in the schedule is supported by the child node; and adjust, by the child node, the communication with the second node when the configuration for the additional communication provided in the schedule is supported by the child node. ### Claim 70 (depends on 69) The non-transitory computer-readable medium of claim 69, wherein to coordinate with the parent node, the computer executable instructions, when executed by the at least one processor, causes the child node to the coordinating comprises: transmit a feedback signal to the parent node in response to receipt of the schedule from the parent node, the feedback signal indicating whether the child node supports the configuration for the additional communication provided in the schedule; and receive, from the parent node, an updated schedule in response to the feedback signal when the child node is configured to support the configuration provided in the schedule. ### Claim 71 (depends on 62) The non-transitory computer-readable medium of claim 62, wherein the CU has labeled the allocation of resources for at least the child node as HARD, wherein the type of the communication with the second node is determined based on a labeling of the allocation of resources. ### Claim 72 (depends on 62) The non-transitory computer-readable medium of claim 62, wherein the computer executable instructions, when executed by the at least one processor, further causes the child node to: receive, from the parent node, a third indication that the allocation of resources are available, wherein the child node utilizes the allocation of resources in accordance with the third indication from the parent node. ### Claim 73 (depends on 72) The non-transitory computer-readable medium of claim 72, wherein to coordinate with the parent node, the computer executable instructions, when executed by the at least one processor, causes the child node to: transmit, to the parent node, a feedback signal prior to receiving the third indication from the parent node that the allocation of resources are available, wherein the feedback signal includes one or more capabilities or conditions of a spatial division multiplex (SDM) operation of the child node. ### Claim 74 (depends on 73) The non-transitory computer-readable medium of claim 73, wherein the feedback signal includes a schedule for the child node to communicate with the parent node. ### Claim 75 (depends on 73) The non-transitory computer-readable medium of claim 73, wherein the feedback signal includes suggested conditions in a manner in which the parent node utilizes its allocation of resources. ### Claim 76 (depends on 72) The non-transitory computer-readable medium of claim 72, wherein the third indication, from the parent node, that the allocation of resources are available further indicates whether use of the allocation of resources by the child node is unconditional or subject to conditions. ### Claim 77 (depends on 72) The non-transitory computer-readable medium of claim 72, wherein to coordinate with the parent node, the computer executable instructions, when executed by the at least one processor causes the child node to: transmit, to the parent node, a feedback signal after utilizing the allocation of resources, the feedback signal including one or more capabilities or conditions of a spatial division multiplex (SDM) operation of the child node; and receive, from the parent node, an updated schedule in response to the feedback signal when the parent node is configured to support the SDM operation of the child node. ### Claim 78 (depends on 77) The non-transitory computer-readable medium of claim 77, wherein the feedback signal includes a schedule including a configuration for additional communication between the parent node and the child node. ### Claim 79 (depends on 72) The non-transitory computer-readable medium of claim 72, wherein the CU has labeled the allocation of resources for the child node as SOFT, wherein the type of the communication with the second node is based on a labeling of the allocation of resources. ### Claim 80 (depends on 62) The non-transitory computer-readable medium of claim 62, wherein the type determined for the communication comprises a spatial division multiplex (SDM) operation between the child node and the parent node.