# US 10,772,103 B1 · Allocating resources towards SU-MIMO and MU-MIMO wireless devices > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,772,103 B1 - Document ID: US10772103B1 - Status: Granted - Kind: B1 - Application number: 16/380,035 - Filed: 2019-04-10 - Granted: 2020-09-08 - Earliest claimed: 2019-04-10 - Assignees: Sprint Spectrum L.P. - Applicants: Sprint Spectrum LP - Inventors: Sreekar Marupaduga; Rajveen Narendran - Web page: https://patentgrep.com/patent/US10772103B1 ## CPC - H04W 72/52: based on load - H04B 7/0452: Multi-user MIMO systems - 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 Allocating resources in a wireless network utilizing SU-MIMO and MU-MIMO modes of operation includes determining an increase in a resource usage of MU-MIMO wireless devices and responsive to the determining, reducing an allocation of resources for one or more SU-MIMO wireless devices. These operations may be performed based on determining that a load level associated with a serving access node rises to meet a threshold. ## Claims ### Claim 1 A method for allocating resources in a wireless network, the method comprising: determining an increase in a resource usage of wireless devices participating in a multi-user MIMO mode of operation (MU-MIMO wireless devices); and responsive to the determining, reducing an allocation of resources for one or more wireless devices participating in a single-user MIMO mode of operation (SU-MIMO wireless devices), wherein the MU-MIMO wireless devices and the SU-MIMO wireless devices are attached to an access node configured to deploy a radio air interface with a plurality of resources. ### Claim 2 (depends on 1) The method of claim 1, wherein the plurality of resources comprises physical resource blocks (PRBs), the method further comprising: determining that a load level associated with the access node rises to meet a threshold; and responsive to determining that the load level rises to meet the threshold, monitoring a PRB usage of the MU-MIMO wireless devices. ### Claim 3 (depends on 2) The method of claim 2, wherein determining that the load level rises to meet the threshold is based on a PRB usage of all wireless devices attached to the access node. ### Claim 4 (depends on 2) The method of claim 2, wherein: the access node is further configured to deploy the radio air interface over one or more sectors, the load level is based on a PRB usage of wireless devices within at least one of the one or more sectors, and the MU-MIMO and SU-MIMO wireless devices are located within the at least one of the one or more sectors. ### Claim 5 (depends on 1) The method of claim 1, wherein: the plurality of resources comprises physical resource blocks (PRBs), the one or more SU-MIMO wireless devices are allocated a first amount of PRBs, and reducing the allocation of resources for the one or more SU-MIMO wireless devices comprises allocating a second amount of PRBs to the one or more SU-MIMO wireless devices, the second amount being smaller than the first amount. ### Claim 6 (depends on 5) The method of claim 5, further comprising setting a default allocation of resources for the one or more SU-MIMO wireless devices, the default allocation being based on historic load information. ### Claim 7 (depends on 1) The method of claim 1, further comprising increasing an allocation of resources for the MU-MIMO wireless devices responsive to determining the increase in resource usage. ### Claim 8 (depends on 1) The method of claim 1, wherein determining the increase in resource usage of MU-MIMO wireless devices comprises determining an increase in one or more of: a number of MU-MIMO wireless devices attached to the access node; a number of MU-MIMO groups; a number of MU-MIMO wireless devices within a MU-MIMO group; or an average number of MU-MIMO wireless devices per MU-MIMO group. ### Claim 9 A system for allocating resources in a wireless network, the system comprising: a processing node; and a processor coupled to the processing node, the processor being configured to: allocate a first default amount of resources to wireless devices attached to an access node and participating in a single-user MIMO mode of operation (SU-MIMO wireless devices); allocate a second default amount of resources to wireless devices attached to the access node and participating in a multi-user MIMO mode of operation (MU-MIMO wireless devices); responsive to determining an increase in a resource requirement of the MU-MIMO wireless devices, allocating a first reduced amount of resources towards the SU-MIMO wireless devices; and responsive to determining the increase in the resource requirement of the MU-MIMO wireless devices, allocating a first increased amount of resources towards the MU-MIMO wireless devices. ### Claim 10 (depends on 9) The system of claim 9, wherein the allocating the first reduced amount of resources towards the SU-MIMO wireless devices and the first increased amount of resources towards the MU-MIMO wireless devices is further performed responsive to determining that a load level associated with the access node rises to meet a threshold, and monitoring the resource requirement of the MU-MIMO wireless devices. ### Claim 11 (depends on 9) The system of claim 9, wherein the first default amount of resources is allocated based on a historic load level associated with the access node. ### Claim 12 (depends on 9) The system of claim 9, wherein the second default amount of resources is allocated based on a historic MU-MIMO gain level associated with the MU-MIMO wireless devices. ### Claim 13 (depends on 9) The system of claim 9, wherein determining the increase in the resource requirement of the MU-MIMO wireless devices comprises determining an increase in one or more of: a number of MU-MIMO wireless devices attached to the access node; a number of MU-MIMO groups; a number of MU-MIMO wireless devices within a MU-MIMO group; or an average number of MU-MIMO wireless devices per MU-MIMO group. ### Claim 14 (depends on 9) The system of claim 9, further comprising: determining a decrease in the resource requirement of the MU-MIMO wireless devices; and allocating a first reduced amount of resources towards the MU-MIMO wireless devices. ### Claim 15 (depends on 14) The system of claim 14, wherein the first reduced amount of resources is equal to the second default amount of resources. ### Claim 16 (depends on 14) The system of claim 14, further comprising allocating a second increased amount of resources towards the MU-MIMO wireless devices. ### Claim 17 (depends on 16) The system of claim 16, wherein the second increased amount of resource is equal to the first default amount of resources. ### Claim 18 A processing node for allocating resources in a wireless network, the processing node being configured to perform operations comprising: determining that a load level associated with an access node rises to meet a threshold; responsive to determining that the load level rises to meet the threshold, monitoring resource usage of wireless devices attached to the access node and participating in a multi-user MIMO mode of operation (MU-MIMO wireless devices); and responsive to determining an increase in the resource usage of the MU-MIMO wireless devices, increasing a first allocation of resources towards the MU-MIMO wireless devices. ### Claim 19 (depends on 18) The processing node of claim 18, further comprising decreasing a second allocation of resources towards wireless devices attached to the access node and participating in a single-user MIMO mode of operation (SU-MIMO wireless devices). ### Claim 20 (depends on 19) The processing node of claim 19, wherein: the MU-MIMO wireless devices and the SU-MIMO wireless devices share a total amount of resources within a sector of the access node, and determining that the load level associated with the access node rises to meet a threshold is based on a total resource usage of the sector.