# US 10,455,553 B2 · Control channel element indexing scheme > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,455,553 B2 - Document ID: US10455553B2 - Status: Granted - Kind: B2 - Application number: 13/957,669 - Filed: 2013-08-02 - Published: 2014-02-06 - Granted: 2019-10-22 - Earliest claimed: 2012-08-03 - Assignees: Nokia Solutions and Networks Oy - Applicants: Nokia Siemens Networks Oy - Inventors: Timo Erkki Lunttila; Esa Tapani Tiirola; Kari Juhani Hooli - Web page: https://patentgrep.com/patent/US10455553B2 ## CPC - H04W 72/21: in the uplink direction of a wireless link, i.e. towards the network - H04L 5/0037: {Inter-user or inter-terminal allocation} - H04L 5/0055: {Physical resource allocation for ACK/NACK (for physical mapping arrangements in ARQ protocols H04L1/1861)} - H04L 5/0091: {Signalling for the administration of the divided path, e.g. signalling of configuration information} - H04W 72/04: Wireless resource allocation - H04L 1/1861: {Physical mapping arrangements (for ACK signaling see also H04L5/0053)} - 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 The present invention provides a method, a apparatus and computer program product relating to a control channel element indexing scheme. The present invention includes obtaining information regarding first partition elements related to a first partitioning of channel resource elements carrying in downlink a configurable first control channel associated with a data channel, determining a number of second partition elements related to a second partitioning of channel resource elements per first partition element, determining for at least one second partition element a second-partition element index based on information regarding the first partition elements and the determined number, determining for at least one third partition element related to a third partitioning of channel resource elements, a third-partition element index, wherein the second partitioning is related to the allocation of channel resources of the first control channel, and wherein the third partitioning is related to allocating channel resources of a second control channel. ## Claims ### Claim 1 A method, comprising: obtaining information regarding first partition elements, the first partition elements corresponding to channel resource elements carrying in downlink a configurable first control channel for allocating channel resources to a data channel according to a first partitioning, wherein the first control channel is an enhanced Physical Downlink Control Channel; determining a number of second partition elements according to a second partitioning of each of the first partition elements, the second partition elements comprising enhanced Control Channel Elements, wherein the enhanced Control Channel Elements can be extended into the enhanced Physical Downlink Control Channel; determining for at least one second partition element a second-partition element index based on the obtained information regarding the first partition elements and the determined number of second partition elements, wherein: either the second partition elements are indexed according to a transmission point specific indexing scheme, or at least one of the second-partition element index and information regarding first partition elements is unique per user equipment; determining for at least one third partition element related to a third partitioning of channel resource elements, a third-partition element index; receiving a data packet transmitted on the data channel; and providing feedback information in uplink direction on a second control channel about successful or unsuccessful reception of the data packet, wherein the second control channel is a Physical Uplink Control Channel, wherein: the first partitioning is related to a partitioning used for allocating channel resources to the data channel, the second partitioning is related to the allocation of channel resources of the first control channel, and the third partitioning is related to allocating channel resources of the second control channel. ### Claim 2 (depends on 1) The method according to claim 1, wherein the second-partition element indexing scheme is specified per transmission point. ### Claim 3 (depends on 1) The method according to claim 1, wherein at least one of the second-partition element index and information regarding first partition elements is unique per user equipment. ### Claim 4 (depends on 1) The method according to claim 1, wherein each second-partition element index is mapped to one or more third-partition element indexes. ### Claim 5 (depends on 1) The method according to claim 1, wherein determining the number of second-partition elements comprises deriving the number from a subframe type. ### Claim 6 (depends on 1) The method according to claim 1, wherein the second-partition element indices are determined so as to form a continuous set of indices. ### Claim 7 (depends on 1) The method according to claim 1, wherein the second-partition element indices are determined starting from the second-partition element on the first partition element with the lowest index. ### Claim 8 (depends on 1) The method according to claim 1, wherein the second-partition element indices are determined starting from the second-partition element on the first partition element with the highest index. ### Claim 9 (depends on 1) The method according to claim 1, wherein determining at least one third-partition element index comprises one-to-one mapping between the second-partition element index and the third-partition element index starting from the lowest second-partition element index. ### Claim 10 (depends on 1) The method according to claim 1, wherein determining at least one third-partition element index comprises many-to-one mapping between the second-partition element index and the third-partition element index. ### Claim 11 (depends on 10) The method according to claim 10, further comprising: a collision avoidance mechanism. ### Claim 12 (depends on 11) The method according to claim 11, wherein the collision avoidance mechanism comprises including a specific field modifying the implicit uplink channel resource allocation. ### Claim 13 (depends on 11) The method according to claim 11, wherein the collision avoidance mechanism comprises first control channel scheduling including selecting at least one second-partition element used for the first control channel. ### Claim 14 (depends on 10) The method according to claim 10, wherein the many-to-one mapping comprises one-to-one mapping between the second-partition element index and the third-partition element index for the second-partition elements contained on the same one first-partition element. ### Claim 15 (depends on 1) The method according to claim 1, wherein the method is executed by a user equipment, wherein obtaining information regarding first partition elements includes receiving the information from a base station. ### Claim 16 (depends on 15) The method according to claim 15, further comprising: receiving an offset parameter indicating the first second-partition element index from a base station. ### Claim 17 An apparatus comprising: at least one processor; and at least one non-transitory memory including computer program code, the at least one memory and the computer program code configured, with the at least one processor, to cause the apparatus to perform at least the following: obtain information regarding first partition elements, the first partition elements corresponding to channel resource elements carrying in downlink a configurable first control channel for allocating channel resources to a data channel, according to a first partitioning, wherein the first control channel is an enhanced Physical Downlink Control Channel; determine a number of second partition elements according to a second partitioning of each of the first partition elements, the second partition elements comprising enhanced Control Channel Elements, wherein the enhanced Control Channel Elements can be extended into the enhanced Physical Downlink Control Channel; determine for at least one second partition element a second-partition element index based on the obtained information regarding the first partition elements and the determined number of second partition elements, wherein: either the second partition elements are indexed according to a transmission point specific indexing scheme, or at least one of the second-partition element index and information regarding first partition elements is unique per user equipment; determine for at least one third partition element related to a third partitioning of channel resource elements, a third-partition element index; receive a data packet transmitted on the data channel; and provide feedback information in uplink direction on a second control channel about successful or unsuccessful reception of the data packet, wherein the second control channel is a Physical Uplink Control Channel, wherein: the first partitioning is related to a partitioning used for allocating channel resources to the data channel, the second partitioning is related to the allocation of channel resources of the first control channel, and the third partitioning is related to allocating channel resources of the second control channel. ### Claim 18 A computer program product comprising: a non-transitory computer-readable storage medium bearing computer program code embodied therein for use with a computer, the computer program code comprising code for performing at least the following: obtaining information regarding first partition, the first partition elements corresponding to channel resource elements carrying in downlink a configurable first control channel for allocating channel resources to a data channel according to a first partitioning, wherein the first control channel is an enhanced Physical Downlink Control Channel; determining a number of second partition elements according to a second partitioning of each of the first partition elements, the second partition elements comprising enhanced Control Channel Elements, wherein the enhanced Control Channel Elements can be extended into the enhanced Physical Downlink Control Channel; determining for at least one second partition element a second-partition element index based on the obtained information regarding the first partition elements and the determined number of second partition elements, wherein: either the second partition elements are indexed according to a transmission point specific indexing scheme, or at least one of the second-partition element index and information regarding first partition elements is unique per user equipment; determining for at least one third partition element related to a third partitioning of channel resource elements, a third-partition element index; receiving a data packet transmitted on the data channel; and providing feedback information in uplink direction on a second control channel about successful or unsuccessful reception of the data packet, wherein the second control channel is a Physical Uplink Control Channel, wherein: the first partitioning is related to a partitioning used for allocating channel resources to the data channel, the second partitioning is related to the allocation of channel resources of the first control channel, and the third partitioning is related to allocating channel resources of the second control channel. ### Claim 19 (depends on 17) The apparatus according to claim 17, wherein the second-partition element indexing scheme is specified per transmission point. ### Claim 20 (depends on 17) The apparatus according to claim 17, wherein at least one of the second-partition element index and information regarding first partition elements is unique per user equipment.