# US 10,455,554 B2 · Signalling arrangement for inter-site carrier aggregation having only single component carrier available in uplink direction > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,455,554 B2 - Document ID: US10455554B2 - Status: Granted - Kind: B2 - Application number: 14/122,296 - Filed: 2011-06-01 - Published: 2014-05-08 - Granted: 2019-10-22 - Earliest claimed: 2011-06-01 - Assignees: Nokia Solutions and Networks Oy - Applicants: Esa Tapani Tiirola; Kari Juhani Hooli; Kari Pekka Pajukoski; Timo Erkki Lunttila - Inventors: Esa Tapani Tiirola; Kari Juhani Hooli; Kari Pekka Pajukoski; Timo Erkki Lunttila - Web page: https://patentgrep.com/patent/US10455554B2 ## CPC - H04W 72/21: in the uplink direction of a wireless link, i.e. towards the network - H04L 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals} - H04L 47/827: {Aggregation of resource allocation or reservation requests} - H04W 56/0005: {synchronizing of arrival of multiple uplinks} - H04L 5/0007: {the frequencies being orthogonal, e.g. OFDM(A) or DMT} - H04L 5/001: {the frequencies being arranged in component carriers} - H04L 5/0035: {Resource allocation in a cooperative multipoint environment} - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) ## Abstract An apparatus is described which is connectable to a first network node by a first downlink component carrier and to at least a second network node by a at least second downlink component carrier, wherein the apparatus provides a single uplink connection. The uplink connection is shared among a first uplink component carrier to the first network node and at least a second up link component carrier to the at least second network node. Sharing of the uplink connection may be performed in a time divisional multiplexed manner. Furthermore, a corresponding method is described. ## Claims ### Claim 1 An apparatus comprising: a transceiver, said transceiver being configured to be connectable to a first network node by a first downlink component carrier and to at least one second network node by at least one second downlink component carrier, wherein said transceiver is configured for simultaneous downlink data reception on the first downlink component carrier from the first network node and on the at least one second downlink component carrier from the at least one second network node, and wherein the transceiver is further configured to provide only a single component carrier for an uplink connection; at least one processor; and at least one memory including computer program code, wherein the at least one memory and the computer program code are configured, with the at least one processor, to cause the apparatus at least to: control the transceiver to share the single component carrier for the uplink connection among a first uplink signaling to the first network node and at least one second uplink signaling to the at least one second network node, wherein sharing among the first uplink signaling and the at least one second uplink signaling is performed in a time-divisional multiplexed manner. ### Claim 2 (depends on 1) The apparatus according to claim 1, wherein the at least one memory and the computer program code, with the at least one processor, are further configured to apply a pre-defined uplink time division on the uplink connection related to the first downlink component carrier and the at least one second downlink component carrier. ### Claim 3 (depends on 1) The apparatus according to claim 1, wherein the at least one memory and the computer program code, with the at least one processor are further configured to perform a frame synchronization among the first uplink signaling and the at least one second uplink signaling. ### Claim 4 (depends on 1) The apparatus according to claim 1, wherein the at least one memory and the computer program code, with the at least one processor; are further configured to schedule timing of control signals to be sent via the first uplink signaling and the at least one second uplink signaling according to a predetermined rule with respect to the sharing among the first uplink signaling and the at least one second uplink signaling. ### Claim 5 An apparatus comprising: at least one processor; and at least one memory including computer program code, wherein the at least one memory and the computer code are configured, with the at least one processor, to cause the apparatus at least to perform the following: configuring a transceiver to be connectable to a user equipment by a first downlink component carrier and by only a single component carrier for an uplink connection, and sharing the single component carrier for the uplink connection among a first uplink signaling for the apparatus and at least one second uplink signaling for at least one additional apparatus, wherein sharing among the first uplink signaling and the at least one second uplink signaling is performed in a time: divisional multiplexed manner. ### Claim 6 (depends on 5) The apparatus according to claim 5, wherein, for the time-divisional multiplexed manner, a pre-defined uplink time division on the uplink connection is used, and wherein the at least one memory and the computer program code, with the at least one processor, are further configured to establish the pre-defined uplink time division, wherein the transceiver is further configured to send the pre-defined uplink time division to the user equipment and to the at least one additional apparatus. ### Claim 7 (depends on 5) The apparatus according to claim 5, wherein predetermined sub-frames or single carrier frequency division multiple access symbols are scheduled for providing uplink signaling switching time. ### Claim 8 (depends on 5) The apparatus according to claim 5, wherein the at least one memory and the computer program code, with the at least one processor, are further configured to schedule timing of control signals to be sent via the first uplink signaling and the at least one second uplink signaling according to a predetermined rule with respect to the sharing of among the first uplink signaling and the at least one second uplink signaling. ### Claim 9 An apparatus comprising: at least one processor; and at least one memory including computer program code, wherein the at least one memory and the computer program code are configured, with the at least one processor, to cause the apparatus at least to: establish a sharing of only a single component carrier for an uplink connection of a user entity equipment, wherein the user equipment is connectable to a first network node by a first downlink component carrier and to at least one second network node by at least one second downlink component carrier and by the uplink connection, wherein the sharing is used to share the single component carrier for the uplink connection among a first uplink signaling to the first network node and at least one second uplink signaling to the at least one second network node, and wherein the sharing among the first uplink signaling and the at least one second uplink signaling is performed in a time-divisional multiplexed manner, and the at least one processor is configured to establish a pre-defined time division. ### Claim 10 (depends on 9) The apparatus according to claim 9, wherein the at least one memory and the computer program code, with the at least one processor are further configured to schedule predetermined sub-frames or single carrier frequency division multiple access symbols for providing uplink signaling switching time. ### Claim 11 (depends on 9) The apparatus according to claim 9 wherein the at least one memory and the computer program code, with the at least one processor, are further configured to schedule timing of control signals to be sent via the first uplink signaling and the at least one second uplink signaling according to a predetermined rule with respect to the time division of the first uplink signaling and the at least one second uplink signaling. ### Claim 12 A method comprising: controlling a transceiver, said transceiver being configured to be connectable to a first network node by a first downlink component carrier and to at least one second network node by at least one second downlink component carrier, wherein said transceiver is configured for simultaneous downlink data reception on the first downlink component carrier from the first network node and on the at least one second downlink component carrier from the at least one second network node, and wherein the transceiver is further configured to provide only a single component carrier for an uplink connection; and controlling the transceiver to share the single component carrier for the uplink connection among a first uplink signaling to the first network node and at least one second uplink signaling to the at least one second network node, wherein the sharing among the first uplink signaling and the at least one second uplink signaling is performed in a time-divisional multiplexed manner. ### Claim 13 (depends on 12) The method according to claim 12, further comprising: applying a pre-defined uplink time division on the uplink connection related to the first downlink component carrier and the at least one second downlink component carrier. ### Claim 14 (depends on 12) The method according to claim 12, further comprising: performing a frame synchronization among the first uplink signaling and the at least one second uplink signaling. ### Claim 15 (depends on 12) The method according to claim 12, further comprising: scheduling timing of control signals to be sent via the first uplink signaling and the at least one second uplink signaling according to a predetermined rule with respect to the sharing of among the first uplink signaling and the at least one second uplink signaling. ### Claim 16 (depends on 12) A computer program product comprising non-transitory computer-readable medium comprising code for performing a method according to claim 12 when run on at least one processor.