# US 10,772,158 B2 · Apparatus to establish wireless backhaul connection > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,772,158 B2 - Document ID: US10772158B2 - Status: Granted - Kind: B2 - Application number: 16/421,622 - Filed: 2019-05-24 - Published: 2019-09-12 - Granted: 2020-09-08 - Earliest claimed: 2014-10-17 - Assignees: Sony Corporation - Applicants: Sony Corporation - Inventors: Shinichiro Tsuda - Web page: https://patentgrep.com/patent/US10772158B2 ## CPC - H04W 88/04: adapted for relaying to or from another terminal or user - H04W 8/005: {Discovery of network devices, e.g. terminals} - H04W 16/24: Cell structures - H04W 16/32: Hierarchical cell structures - H04W 48/20: Selecting an access point - H04W 84/045: {using private Base Stations, e.g. femto Base Stations, home Node B} - H04W 88/12: Access point controller devices - H04W 24/02: Arrangements for optimising operational condition - H04W 76/10: Connection setup - 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) ## Abstract An apparatus to enable flexible arrangement of cells with a smaller burden includes an acquisition unit configured to acquire information indicating one or more second base stations located within coverage of a first base station connected to a wired backhaul; and a controller configured to control establishment of a wireless backhaul between the first base station and each of the one or more second base stations. ## Claims ### Claim 1 A relay node, comprising: a processor configured to: receive first information from a donor node; transmit a request to the donor node based on the first information, wherein the donor node establishes a wireless connection between the relay node and the donor node based on the request, and the donor node connects to a core network; receive a notification from the donor node, wherein the notification indicates the establishment of the wireless connection; and transmit, via a control plane in the wireless connection, second information to the donor node based on the received notification, wherein the second information indicates a traffic volume associated with the relay node. ### Claim 2 (depends on 1) The relay node according to claim 1, wherein the processor is further configured to trigger provision of the second information based on a change of the traffic volume associated with the relay node. ### Claim 3 (depends on 1) The relay node according to claim 1, wherein the first information includes at least one of a frequency band, maximum power, or applicable duplex scheme. ### Claim 4 (depends on 1) The relay node according to claim 1, the processor is further configured to control a retransmission control function of the relay node. ### Claim 5 (depends on 1) The relay node according to claim 1, the processor is further configured to transmit third information to the donor node, wherein the third information includes a channel quality of the wireless connection. ### Claim 6 (depends on 5) The relay node according to claim 5, wherein the channel quality is at least one of RSRP (Reference Signal Received Power), RSRQ (Reference Signal Received Quality), or CQI (Channel Quality Indicator). ### Claim 7 A donor node, comprising: a processor configured to: establish a wireless connection between the donor node and a relay node; establish a connection with a core network; transmit a notification to the relay node, wherein the notification indicates the establishment of the wireless connection; receive, via a control plane in the wireless connection, first information from the relay node based on the notification, wherein the first information indicates traffic volume associated with the relay node; and allocate radio resources in the wireless connection based on the first information. ### Claim 8 (depends on 7) The donor node according to claim 7, the processor is further configured to allocate a duration of the radio resources based on the first information. ### Claim 9 (depends on 8) The donor node according to claim 8, the processor is further configured to execute a scheduling process in the duration of the radio resources based on the first information. ### Claim 10 (depends on 8) The donor node according to claim 8, the processor is further configured to allocate a frequency bandwidth of the radio resources based on the first information. ### Claim 11 (depends on 7) The donor node according to claim 7, the processor is further configured to allocate a bandwidth of the radio resources based on the first information. ### Claim 12 (depends on 7) The donor node according to claim 7, wherein the processor is further configured to: receive second information from the relay node, wherein the second information includes a channel quality of the wireless connection; and dynamically control allocation of the radio resources based on the second information. ### Claim 13 (depends on 12) The donor node according to claim 12, wherein the channel quality is at least one of RSRP (Reference Signal Received Power), RSRQ (Reference Signal Received Quality), or CQI (Channel Quality Indicator). ### Claim 14 (depends on 7) The donor node according to claim 7, wherein the processor is further configured to: communicate, via the wireless connection, with the relay node at a first frequency band; and establish a wireless communication with a wireless communication terminal, wherein the wireless communication is in a second frequency band, and the first frequency band is different from the second frequency band. ### Claim 15 (depends on 7) The donor node according to claim 7, wherein the processor is further configured to: communicate, via the wireless connection, with the relay node at a first frequency band; and establish a wireless communication with a wireless communication terminal, wherein the wireless communication is in a second frequency band, and the first frequency band is same as the second frequency band. ### Claim 16 (depends on 7) The donor node according to claim 7, the processor is further configured to: establish the wireless connection with a plurality of relay nodes in a same frequency band; and concurrently communicate with the plurality of relay nodes within an allocated sub-frame. ### Claim 17 (depends on 16) The donor node according to claim 16, wherein the concurrent communication with the plurality of relay nodes within the allocated sub-frame is spatially multiplexed. ### Claim 18 (depends on 7) The donor node according to claim 7, the processor is further configured to transmit third information to the relay node based on a paging procedure. ### Claim 19 (depends on 7) The donor node according to claim 7, the processor is further configured to transmit third information to the relay node by broadcast.