# US 2021/0243832 A1 · Handling Re-Establishment Rejection > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0243832 A1 - Document ID: US20210243832A1 - Status: Published application - Kind: A1 - Application number: 17/054,013 - Filed: 2019-05-08 - Published: 2021-08-05 - Earliest claimed: 2018-05-10 - Assignees: Telefonaktieboloaget LM Ericsson (publ) - Applicants: Telefonaktieboloaget LM Ericsson (publ) - Inventors: Oumer Teyeb; Gunnar Mildh; Alessio Terzani; Icaro L.J. Da Silva - Web page: https://patentgrep.com/patent/US20210243832A1 ## CPC - H04W 76/18: Management of setup rejection or failure - H04W 76/19: Connection re-establishment - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract A method by a network node is provided for handling a re-establishment request. The method includes receiving, from a wireless device, a first request for re-establishment of a connection with the network node in a first cell. The network node determines that a load on the network node exceeds a threshold amount. In response to determining that the load on the network node exceeds the threshold amount, the network node ignores the first request for re-establishment. ## Claims ### Claim 1 A method by a network node for handling a re-establishment request, the method comprising: receiving, from a wireless device, a first request for re-establishment of a connection with the network node in a first cell; determining that a load on the network node exceeds a threshold amount; and in response to determining that the load on the network node exceeds the threshold amount, ignoring the first request for re-establishment. ### Claim 2 (depends on 1) The method of claim 1, wherein the request comprises an indication of a cause of failure of the connection with the network node. ### Claim 3 (depends on 2) The method of claim 2, further comprising ignoring the request for re-establishment in accordance with the indication of the cause of failure. ### Claim 4 (depends on 1) The method of claim 1, wherein determining that the load on the network node exceeds a threshold amount comprises determining that the load exceeds the threshold amount at the expiration of a timer. ### Claim 5 (depends on 4) The method of claim 4, further comprising transmitting, to the wireless device, information indicating a timer configuration indicating the threshold amount of time. ### Claim 6 (depends on 5) The method of claim 5, wherein the information is broadcasted via system information. ### Claim 7 (depends on 1) The method of claim 1, further comprising transmitting, to the wireless device, information indicating an access barring class and associated reject probability for handling re-establishments in case of failure of the connection in the first cell. ### Claim 8 (depends on 1) The method of claim 1, further comprising transmitting, to the wireless device, a message indicating a rejection of the first request for the re-establishment of the connection in the first cell. ### Claim 9 (depends on 8) The method of claim 8, wherein the message indicating the rejection of the first request further comprises a timer configuration indicating a threshold amount of time the wireless device is to wait before attempting another reestablishment of the connection with the network node in the first cell. ### Claim 10 (depends on 8) The method of claim 8, wherein the message identifies a second cell in which the wireless device should initiate a reestablishment of the connection. ### Claim 11 (depends on 8) The method of claim 8, wherein the message is an NR RRCReestablishmentReject message. ### Claim 12 (depends on 8) The method of claim 8, wherein the message is an RRCReject message. ### Claim 13 (depends on 1) A computer program comprising instructions which when executed on a computer perform the methods of claim 1. ### Claim 14 (canceled) ### Claim 15 (depends on 1) A non-transitory computer readable medium storing instructions which when executed by a computer perform to the method of claim 1. ### Claim 16 A network node comprising: memory storing instructions; and processing circuitry configured to execute the instructions to cause the network node to: receive, from a wireless device, a first request for re-establishment of a connection with the network node in a first cell; determine that a load on the network node exceeds a threshold amount; and in response to determining that the load on the network node exceeds the threshold amount, ignore the first request for re-establishment. ### Claim 17 (depends on 16) The network node of claim 16, wherein the request comprises an indication of a cause of failure of the connection with the network node. ### Claim 18 (depends on 17) The network node of claim 17, wherein the processing circuitry is configured to execute the instructions to cause the network node to ignore the request for re-establishment in accordance with the indication of the cause of failure. ### Claim 19 (depends on 17) The network node of claim 17, wherein, when determining that the load on the network node exceeds a threshold amount, the processing circuitry is configured to execute the instructions to cause the network node to determine that the load exceeds the threshold amount at the expiration of a timer. ### Claim 20 (depends on 17) The network node of claim 17, wherein the processing circuitry is configured to execute the instructions to cause the network node to transmit, to the wireless device, information indicating a timer configuration indicating the threshold amount of time. ### Claim 21 (depends on 20) The network node of claim 20, wherein the information is broadcasted via system information. ### Claim 22 (depends on 17) The network node of claim 17, wherein the processing circuitry is configured to execute the instructions to cause the network node to transmit, to the wireless device, information indicating an access barring class and associated reject probability for handling re-establishments in case of failure of the connection in the first cell. ### Claim 23 (depends on 17) The network node of claim 17, wherein the processing circuitry is configured to execute the instructions to cause the network node to transmit, to the wireless device, a message indicating a rejection of the first request for the re-establishment of the connection in the first cell. ### Claim 24 (depends on 23) The network node of claim 23, wherein the message indicating the rejection of the first request further comprises a timer configuration indicating a threshold amount of time the wireless device is to wait before attempting another reestablishment of the connection with the network node in the first cell. ### Claim 25 (depends on 23) The network node of claim 23, wherein the message identifies a second cell in which the wireless device should initiate a reestablishment of the connection. ### Claim 26 (depends on 23) The network node of claim 23, wherein the message is an NR RRCReestablishmentReject message. ### Claim 27 (depends on 23) The network node of claim 23, wherein the message is an RRCReject message.