# US 11,310,674 B2 · Method and apparatus for beamforming control in a wireless communication network > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,310,674 B2 - Document ID: US11310674B2 - Status: Granted - Kind: B2 - Application number: 16/342,658 - Filed: 2018-12-11 - Published: 2021-11-18 - Granted: 2022-04-19 - Earliest claimed: 2018-12-11 - Assignees: Telefonaktiebolaget LM Ericsson (publ) - Applicants: Telefonaktiebolaget LM Ericsson (publ) - Inventors: Andres Reial; Icaro L. J. Da Silva; Johan Rune; Henrik Sahlin - Web page: https://patentgrep.com/patent/US11310674B2 ## CPC - H04B 7/0617: {for beam forming} - H04B 7/088: {using beam selection} - H04W 8/24: Transfer of terminal data - H04W 16/28: using beam steering - H04W 48/02: Access restriction performed under specific conditions - H04W 48/20: Selecting an access point - H04W 56/001: {Synchronization between nodes} - H04W 74/0833: Random access procedures, e.g. with 4-step access - 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 A base station or other network node configures a network transmission in dependence on a directional scanning reception ability of a wireless communication device targeted by the transmission. An example transmission configuration is selecting or restricting which Transmission/Reception Point to use for the transmission or selecting or restricting the beamforming configuration to use for the transmission. The device complements operations in the wireless communication network by indicating its directional scanning reception ability in initial signaling, such as used for random access, or in Radio Resource Control signaling, or both. ## Claims ### Claim 1 A method of operation by a network node in a wireless communication network, the method comprising: determining a directional reception scanning ability of a wireless communication device, according to a capability indication signaled by the device; and configuring a network transmission for the device, in dependence on the directional reception scanning ability of the device; wherein configuring the network transmission for the device comprises selecting a transmission beam sweeping configuration, including: selecting one or more transmission beamforming directions, from among a plurality of transmission beam directions included in a transmission beam sweep. ### Claim 2 (depends on 1) The method of claim 1, wherein determining the directional reception scanning ability of the device comprises determining whether the device has the ability to receive in multiple reception directions simultaneously. ### Claim 3 (depends on 2) The method of claim 2, wherein configuring the network transmission for the device comprises restricting selection of a network Transmission/Reception Point to use for performing the network transmission and/or restricting selection of a transmission beamforming configuration to use for performing the network transmission, in response to determining that the device does not have the ability to receive in multiple reception directions simultaneously. ### Claim 4 (depends on 1) The method of claim 1, wherein configuring the network transmission for the device comprises at least one of: selecting a transmission/reception point to use for performing the network transmission; or selecting a transmission beamforming configuration to use for performing the network transmission. ### Claim 5 (depends on 4) The method of claim 4, wherein selecting the transmission beamforming configuration comprises at least one of: selecting a transmission beamforming direction to use for the network transmission; or selecting a transmission beam sweeping configuration to use for the network transmission. ### Claim 6 (depends on 1) The method of claim 1, wherein selecting the transmission beam sweeping configuration, further includes at least one of: selecting a dwell time to use for one or more of the transmission beam directions; and selecting a number to times to repeat one or more of the transmission beam directions. ### Claim 7 (depends on 1) The method of claim 1, wherein the method comprises a random access method for supporting random access to the network by the device, and wherein: determining the directional reception scanning ability of the device comprises determining the directional scanning ability of the device in dependence on a random access preamble transmitted by the device as a random access request, the sequence or index of the random access preamble mapping to a defined directional reception scanning ability, according to a defined mapping scheme known to the network node and the device; and configuring the network transmission for the device comprises selecting at least one of a Transmission/Reception Point or a transmission beamforming configuration to use for transmitting a random access response corresponding to the random access request. ### Claim 8 (depends on 1) The method of claim 1, wherein the method comprises a serving connection failure recovery method for supporting connection failure recovery between the network and the device, and wherein configuring the network transmission for the device comprises, in response to determining that the device does not have the ability to receive in multiple reception directions simultaneously, restricting failure-recovery signaling transmissions subsequent to a serving connection failure, to use a Transmission/Reception Point or a transmission beamforming direction that is known to the device in advance of the serving connection failure. ### Claim 9 A network node configured for operation in a wireless communication network, the network node comprising: communication circuitry configured for wireless communication with wireless communication devices, or configured for inter-nodal communication with another network node in the network that is configured for wireless communication with wireless communication devices; and processing circuitry operatively associated with the communication circuitry and configured to: determine a directional reception scanning ability of a wireless communication device, according to a capability indication signaled by the device; and configure a network transmission for the device, in dependence on the directional reception scanning ability of the device, wherein the processing circuitry is configured to configure the network transmission for the device by selecting a transmission beam sweeping configuration, including: selecting one or more transmission beamforming directions, from among a plurality of transmission beam directions included in a transmission beam sweep. ### Claim 10 (depends on 9) The network node of claim 9, wherein the processing circuitry is configured to determine the directional reception scanning ability of the device by determining whether the device has the ability to receive in multiple reception directions simultaneously. ### Claim 11 (depends on 10) The network node of claim 10, wherein the processing circuitry is configured to configure the network transmission for the device by, in response to determining that the device does not have the ability to receive in multiple reception directions simultaneously, restricting selection of a network Transmission/Reception Point to use for performing the network transmission and/or restricting selection of a transmission beamforming configuration to use for performing the network transmission. ### Claim 12 (depends on 9) The network node of claim 9, wherein the processing circuitry is configured to configure the network transmission for the device by at least one of: selecting a transmission/reception point to use for performing the network transmission; or selecting a transmission beamforming configuration to use for performing the network transmission. ### Claim 13 (depends on 12) The network node of claim 12, wherein, as said selecting the transmission beamforming configuration, the processing circuitry is configured to select a transmission beamforming direction to use for the network transmission and/or select a transmission beam sweeping configuration to use for the network transmission. ### Claim 14 (depends on 9) The network node of claim 9, wherein the processing circuitry is further configured to select the transmission beam sweeping configuration by performing at least one of: selecting a dwell time to use for one or more of the transmission beam directions; and selecting a number of times to repeat one or more of the transmission beam directions. ### Claim 15 (depends on 9) The network node of claim 9, wherein the network transmission comprises a random access response to be sent in reply to a random access preamble transmitted by the wireless device, and wherein the processing circuitry is configured to determine the directional reception scanning ability of the device from a sequence or index value of the random access preamble, the sequence or index of the random access preamble mapping to a defined directional reception scanning ability, according to a defined mapping scheme known to the network node and the device; and wherein, to configure the network transmission, the processing circuitry is configured to select at least one of a Transmission/Reception Point or a transmission beamforming configuration to use for transmitting a random access response corresponding to the random access preamble. ### Claim 16 (depends on 9) The network node of claim 9, wherein the network transmission comprises failure recovery signaling to be sent for connection recovery between the network and the device, and wherein, in response to determining that the device does not have the ability to receive in multiple reception directions simultaneously, the processing circuitry is configured to restrict transmission of the failure-recovery signaling to a Transmission/Reception Point or a transmission beamforming direction that is known to the device in advance of the serving connection failure. ### Claim 17 A method of operation by a wireless communication device configured for operation with a wireless communication network, the method comprising: determining a directional reception scanning ability of the device; sending a capability indication to the network, indicating the directional reception scanning ability of the device; and for receiving a network transmission, configuring reception beamforming at the device, in dependence on the directional reception scanning ability, wherein the directional reception scanning ability corresponds to whether the device has the ability to scan in multiple reception directions simultaneously, and, where the device is not able to scan in multiple reception directions simultaneously, configuring the reception beamforming at the device comprises selecting or prioritizing a particular reception beamforming direction to use for receiving the network transmission. ### Claim 18 (depends on 17) The method of claim 17, wherein determining the directional reception scanning ability of the device comprises at least one of: determining the directional reception scanning ability from capability information stored in the device; or determining the directional reception scanning ability dynamically, in dependence on one or more operating conditions of the device. ### Claim 19 (depends on 17) The method of claim 17, wherein sending the capability indication to the network comprises sending Radio Resource Control signaling for the network that conveys the capability indication. ### Claim 20 (depends on 17) The method of claim 17, wherein sending the capability indication to the network comprises sending a random access request for the network that conveys the capability indication. ### Claim 21 (depends on 20) The method of claim 20, further comprising, in dependence on the directional reception scanning ability of the device, configuring reception processing for a random access response expected from the network in reply to the random access request. ### Claim 22 (depends on 20) The method of claim 20, wherein sending the random access request comprises selecting and transmitting a random access preamble, according to mapping information that maps different random access preambles to different directional reception scanning abilities. ### Claim 23 (depends on 17) The method of claim 17, further comprising, for receiving a network transmission, configuring reception beamforming at the device, in dependence on the directional reception scanning ability, wherein the directional reception scanning ability corresponds to whether the device has the ability to scan in multiple reception directions simultaneously, and, where the device is not able to scan in multiple reception directions simultaneously, configuring the reception beamforming at the device comprises configuring a set of reception beamforming directions to use for attempting to receive the network transmission. ### Claim 24 (depends on 17) The method of claim 17, further comprising, for receiving a network transmission, configuring reception beamforming at the device, in dependence on the directional reception scanning ability, wherein the directional reception scanning ability corresponds to whether the device has the ability to scan in multiple reception directions simultaneously, and, where the device is not able to scan in multiple reception directions simultaneously, configuring the reception beamforming at the device comprises configuring at least one of a dwell time or a number of reception repetitions, to use in each of one or more reception beamforming directions used by the device for attempting to receive the network transmission. ### Claim 25 A wireless communication device configured for operation with a wireless communication network, the device comprising: communication circuitry configured for wireless communication with transmission/reception points in the network; and processing circuitry operatively associated with the communication circuitry and configured to: determine a directional reception scanning ability of the device; send a capability indication to the network, indicating the directional reception scanning ability of the device; and for receiving a network transmission, configure reception beamforming at the device, in dependence on the directional reception scanning ability, wherein the directional reception scanning ability corresponds to whether the device has the ability to scan in multiple reception directions simultaneously, and, where the device is not able to scan in multiple reception directions simultaneously, the processing circuitry is configured to configure the reception beamforming at the device by selecting or prioritizing a particular reception beamforming direction to use for receiving the network transmission. ### Claim 26 (depends on 25) The device of claim 25, wherein the processing circuitry is configured to determine the directional reception scanning ability of the device from capability information stored in the device and/or dynamically, in dependence on one or more operating conditions of the device. ### Claim 27 (depends on 25) The device of claim 25, wherein the processing circuitry is configured to send the capability indication in Radio Resource Control signaling transmitted by the device. ### Claim 28 (depends on 25) The device of claim 25, wherein the processing circuitry is configured to send the capability indication to the network by sending a random access request to the network that conveys the capability indication. ### Claim 29 (depends on 28) The device of claim 28, wherein, in dependence on the directional reception scanning ability of the device, the processing circuitry is configured to configure reception processing for a random access response expected from the network in reply to the random access request. ### Claim 30 (depends on 28) The device of claim 28, wherein the processing circuitry is configured to select and transmit, as the random access request, a random access preamble, according to mapping information that maps different random access preambles to different directional reception scanning abilities. ### Claim 31 (depends on 25) The device of claim 25, wherein, for receiving a network transmission, the processing circuitry is configured to configure reception beamforming at the device, in dependence on the directional reception scanning ability, wherein the directional reception scanning ability corresponds to whether the device has the ability to scan in multiple reception directions simultaneously, and, where the device is not able to scan in multiple reception directions simultaneously, the processing circuitry is configured to configure the reception beamforming at the device by configuring a set of reception beamforming directions to use for attempting to receive the network transmission. ### Claim 32 (depends on 25) The device of claim 25, wherein, for receiving a network transmission, the processing circuitry is configured to configure reception beamforming at the device, in dependence on the directional reception scanning ability, wherein the directional reception scanning ability corresponds to whether the device has the ability to scan in multiple reception directions simultaneously, and, where the device is not able to scan in multiple reception directions simultaneously, the processing circuitry is configured to configure the reception beamforming at the device by configuring at least one of a dwell time or a number of reception repetitions, to use in each of one or more reception beamforming directions used by the device for attempting to receive the network transmission. ### Claim 33 A wireless communication system comprising: a wireless communication device configured for operation with a wireless communication network, the wireless communication device comprising: communication circuitry configured for wireless communication with transmission/reception points in the network; and processing circuitry operatively associated with the communication circuitry and configured to: determine a directional reception scanning ability of the device; and send a capability indication to the network, indicating the directional reception scanning ability of the device; and a network node configured for operation in the network, the network node comprising: communication circuitry configured for wireless communication with the device, or configured for inter-nodal communication with another network node in the network that is configured for wireless communication with the device; and processing circuitry operatively associated with the communication circuitry and configured to: determine a directional reception scanning ability of the device, according to a capability indication signaled by the device; and configure a network transmission for the device, in dependence on the directional reception scanning ability of the device, wherein the processing circuitry of the network node is configured to configure the network transmission for the device by selecting a transmission beam sweeping configuration, including: selecting one or more transmission beamforming directions, from among a plurality of transmission beam directions included in a transmission beam sweep.