# US 11,451,356 B2 · Resource configuration method and node > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,451,356 B2 - Document ID: US11451356B2 - Status: Granted - Kind: B2 - Application number: 17/077,772 - Filed: 2020-10-22 - Published: 2021-02-11 - Granted: 2022-09-20 - Earliest claimed: 2018-04-24 - Assignees: Huawei Technologies Co., Ltd. - Applicants: Huawei Technologies Co., Ltd. - Inventors: Fengwei Liu; Lei Chen - Web page: https://patentgrep.com/patent/US11451356B2 ## CPC - H04L 5/0048: {Allocation of pilot signals, i.e. of signals known to the receiver (allocation of control signalling H04L5/0053; use of control signalling H04L5/0091)} - H04L 5/0051: {of dedicated pilots, i.e. pilots destined for a single user or terminal} - H04B 7/0697: {using spatial multiplexing} - H04B 7/15542: {Selecting at relay station its transmit and receive resources (selection of wireless resources by user or terminal H04W72/02; arrangements affording multiple use of the transmission path by two-dimensional division of the resources H04L5/0003, or by allocating sub-channels H04L5/003)} - H04L 5/0025: {Spatial division following the spatial signature of the channel} - H04L 5/0062: {Avoidance of ingress interference, e.g. ham radio channels} - H04W 72/04: Wireless resource allocation - H04W 72/0446: Resources in time domain, e.g. slots or frames - H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal - H04W 72/29: between an access point and the access point controlling device - H04W 72/54: based on quality criteria - H04W 72/541: using the level of interference - H04L 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals} - H04W 72/046: {the resource being in the space domain, e.g. beams} - H04W 84/047: {using dedicated repeater stations} - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) - H04B: TRANSMISSION - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract This application relates to the field of communications technologies, and discloses a resource configuration method and a node. The method includes: sending, by an parent node of a first node, first configuration information to the first node; and then determining, by the first node based on the first configuration information, a second resource for communication between the first node and a child node served by the first node. In this way, the determined second resource can implement orthogonalization between DMRS ports of an access link of the first node and a backhaul link of the first node, and therefore, link performance is improved. ## Claims ### Claim 1 A resource configuration method, comprising: receiving, by a first node, first configuration information sent by a second node, wherein the second node is a parent node of the first node; and determining, by the first node based on the first configuration information, a second resource for communication between the first node and a child node served by the first node, wherein the second resource is at least one demodulation reference signal (DMRS) port occupied by a first access link, the at least one DMRS port is one of a plurality of ports in a DMRS port set corresponding to a first slot, and the first access link is a link between the first node and the child node served by the first node, wherein the first node uses a space division multiple access (SDMA) technology that is based on flexible duplex. ### Claim 2 (depends on 1) The method according to claim 1, wherein the first configuration information is used to indicate a third resource that can be used by the first access link, the third resource is one of the plurality of ports in the DMRS port set, and the second resource is all or a part of resources of the third resource. ### Claim 3 (depends on 1) The method according to claim 1, wherein the first configuration information is used to indicate a fourth resource occupied by a backhaul link between the first node and the second node, the fourth resource is one of the plurality of ports in the DMRS port set, and the second resource is one or more or all of the plurality of ports, other than the fourth resource, in the DMRS port set. ### Claim 4 (depends on 1) The method according to claim 1, wherein the first slot is one of a plurality of slots that are used for spatial multiplexing and that are configured by the second node for a backhaul link between the first node and the second node, and a slot used for spatial multiplexing is one of the plurality of slots in which data sending or receiving can be simultaneously performed on a backhaul link and an access link of a same node. ### Claim 5 (depends on 1) The method according to claim 1, wherein the first configuration information comprises at least one of the following information: parameter information of the first slot, DMRS configuration type information of the first slot, a code division multiplexing (CDM) group identifier, or an orthogonal cover code (OCC) identifier. ### Claim 6 A resource configuration method, comprising: determining, by a second node, first configuration information, wherein the first configuration information is used by a first node to determine, based on the first configuration information, a second resource for communication between the first node and a child node served by the first node, the second resource is at least one demodulation reference signal (DMRS) port that can be occupied by a first access link, the at least one DMRS port is one of a plurality of ports in a DMRS port set corresponding to a first slot, and the first access link is a link between the first node and the child node served by the first node; and sending, by the second node, the first configuration information to the first node, wherein the first node uses a space division multiple access (SDMA) technology that is based on flexible duplex. ### Claim 7 (depends on 6) The method according to claim 6, wherein the first configuration information is used to indicate a third resource that is not occupied by a backhaul link between the first node and the second node, the third resource is one of the plurality of ports in the DMRS port set, and the second resource is all or a part of resources of the third resource. ### Claim 8 (depends on 6) The method according to claim 6, wherein the first configuration information is used to indicate a fourth resource that can be used by the first access link, the fourth resource is one of the plurality of ports in the DMRS port set, and the second resource is one or more or all of the plurality of ports, other than the fourth resource, in the DMRS port set. ### Claim 9 (depends on 6) The method according to claim 6, wherein the first slot is one of a plurality of slots that are used for spatial multiplexing and that are configured by the second node for a backhaul link between the first node and the second node, and a slot used for spatial multiplexing is one of the plurality of slots in which data sending or receiving can be simultaneously performed on a backhaul link and an access link of a same node. ### Claim 10 (depends on 6) The method according to claim 6, wherein the first configuration information comprises at least one of the following information: parameter information of the first slot, DMRS configuration type information of the first slot, a code division multiplexing (CDM) group identifier, or an orthogonal cover code (OCC) identifier. ### Claim 11 A communications apparatus, comprising a processor and a transceiver, wherein the transceiver receives first configuration information sent by a second node, wherein the second node is a parent node of the communications apparatus; and the processor determines, based on the first configuration information, a second resource for communication between the communications apparatus and a child node served by the communications apparatus, wherein the second resource is at least one demodulation reference signal (DMRS) port that can be occupied by a first access link, the at least one DMRS port is one of a plurality of ports in a DMRS port set corresponding to a first slot, and the first access link is a link between the communications apparatus and the child node served by the communications apparatus, wherein the communications apparatus uses a space division multiple access (SDMA) technology that is based on flexible duplex. ### Claim 12 (depends on 11) The apparatus according to claim 11, wherein the first configuration information is used to indicate a third resource that can be used by the first access link, the third resource is one of the plurality of ports in the DMRS port set, and the second resource is all or a part of resources of the third resource. ### Claim 13 (depends on 11) The apparatus according to claim 11, wherein the first configuration information is used to indicate a fourth resource occupied by a backhaul link between the communications apparatus and the second node, the fourth resource is one of the plurality of ports in the DMRS port set, and the second resource is one or more or all of the plurality of ports, other than the fourth resource, in the DMRS port set. ### Claim 14 (depends on 11) The apparatus according to claim 11, wherein the first slot is one of a plurality of slots that are used for spatial multiplexing and that are configured by the second node for a backhaul link between the communications apparatus and the second node, and a slot used for spatial multiplexing is one of the plurality of slots in which data sending or receiving can be simultaneously performed on a backhaul link and an access link of a same node. ### Claim 15 (depends on 11) The apparatus according to claim 11, wherein the first configuration information comprises at least one of the following information: parameter information of the first slot, DMRS configuration type information of the first slot, a code division multiplexing (CDM) group identifier, or an orthogonal cover code (OCC) identifier. ### Claim 16 A communications apparatus, comprising a processor and a transceiver, wherein the processor determines first configuration information, wherein the first configuration information is used by a first node to determine, based on the first configuration information, a second resource for communication between the first node and a child node served by the first node, the second resource is at least one demodulation reference signal (DMRS) port that can be occupied by a first access link, the at least one DMRS port is one of a plurality of ports in a DMRS port set corresponding to a first slot, and the first access link is a link between the first node and the child node served by the first node; and the transceiver sends the first configuration information to the first node under control of the processor, wherein the first node uses a space division multiple access (SDMA) technology that is based on flexible duplex. ### Claim 17 (depends on 16) The apparatus according to claim 16, wherein the first configuration information is used to indicate a third resource that is not occupied by a backhaul link between the first node and the communications apparatus, the third resource is one of the plurality of ports in the DMRS port set, and the second resource is all or a part of resources of the third resource. ### Claim 18 (depends on 16) The apparatus according to claim 16, wherein the first configuration information is used to indicate a fourth resource that can be used by the first access link, the fourth resource is one of the plurality of ports in the DMRS port set, and the second resource is one or more or all of the plurality of ports, other than the fourth resource, in the DMRS port set. ### Claim 19 (depends on 16) The apparatus according to claim 16, wherein the first slot is one of a plurality of slots that are used for spatial multiplexing and that are configured by the communications apparatus for a backhaul link between the first node and the communications apparatus, and a slot used for spatial multiplexing is one of the plurality of slots in which data sending or receiving can be simultaneously performed on a backhaul link and an access link of a same node. ### Claim 20 (depends on 16) The apparatus according to claim 16, wherein the first configuration information comprises at least one of the following information: parameter information of the first slot, DMRS configuration type information of the first slot, a code division multiplexing (CDM) group identifier, or an orthogonal cover code (OCC) identifier.