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000. {Water 015% {I025 Patent Application Publication Nov US 20120282942A1 (19) United States (12) Patent Application Publication (10) Pub. No.: US 2012/0282942 A1 Uusitalo et al. (43) Pub. Date: Nov. 8, 2012 (54) METHODS, APPARATUSES AND COMPUTER Publication Classi?cation PROGRAM PRODUCTS FOR CONFIGURING (51) Int. Cl. FREQUENCY AGGREGATION H04W 72/00 (2009.01) (52) Us. or. ................................................... .. 455/452.2 (75) Inventors: Mikko Aleksi Uusitalo, Helsinki (57) ABSTRACT (Fl); Mika Petri Olavi Rinne, An apparatus for determining Whether to deactivate a second Espoo (Fl); Antti Sakari Sorri, ary cell includes a processor and memory storing executable Helsinki (Fl); Carl Simon Wijting, computer program code that cause the apparatus to at least Espoo (Fl); Claudio Rosa, Randers perform operations including determining that a secondary (DK) cell should be deactivated based on a measurement(s) of the secondary cell or received information associated With fre quency spectrum of the secondary cell. The computer pro (73) Assignees: Nokia Siemens Networks Oy; gram code may cause the apparatus to generate a deactivation Nokia Corporation message responsive to the measurement(s) indicating sec ondary cell interference or the received information indicat ing that the apparatus should no longer use the frequency (21) Appl. No.: 13/099,019 spectrum. The computer program code may cause the appa ratus to provide the deactivation message to a netWork device. Corresponding methods and computer program products are (22) Filed: May 2, 2011 also provided. @150; " _' 00?. 0mm rage iremzzzmriif * % 000. {water 015% {i025 Patent Application Publication Nov. 8, 2012 Sheet 1 0f 11 US 2012/0282942 A1 Fig‘ 18. m FIG. Patent Application Publication Nov. 8, 2012 Sheet 2 0f 11 US 2012/0282942 A1 -- 'v j 122%; away mag: mwm?ésy v FIG. 4.‘ L Fig; Patent Application Publication Nov. 8, 2012 Sheet 3 0f 11 US 2012/0282942 A1 8. is I ........ .. é? ........................................................... .. 'a We.i ‘a ---------------------------------------------- - . £€§8¥¥Q£ pkg; PM”? my“ F??f Patent Application Publication Nov. 8, 2012 Sheet 4 0f 11 US 2012/0282942 A1 Patent Application Publication Nov. 8, 2012 Sheet 5 0f 11 US 2012/0282942 A1 wwam _ wmggumamammwm \N wmmmg Mma v 3%. \ {1Q}??? M??si??f??? 2g ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, ,, Qgxgggg Patent Application Publication Nov. 8, 2012 Sheet 6 0f 11 US 2012/0282942 A1 3;; mmmzwmim MQQULE 1k Q @RGQ ES$$R QEQQRY 535.3558 QEEWQE NYE-R FY6215??? Patent Application Publication NOV. 8, 2012 Sheet 7 0f 11 US 2012/0282942 A1 Patent Application Publication Nov. 8, 2012 Sheet 8 0f 11 US 2012/0282942 A1 Patent Application Publication Nov. 8, 2012 Sheet 9 0f 11 US 2012/0282942 A1 EMwa?x?ggwmagmx a, Xx, .4 w Patent Application Publication Nov. 8, 2012 Sheet 10 0f 11 US 2012/0282942 A1 f q,“ .......... i. ........ V. Patent Application Publication Nov. 8, 2012 Sheet 11 0f 11 US 2012/0282942 A1 at? mam- fw US 2012/0282942 A1 Nov. 8, 2012 METHODS, APPARATUSES AND COMPUTER turbance or interference within the secondary cell. The mea PROGRAM PRODUCTS FOR CONFIGURING surements may be performed by the mobile device. FREQUENCY AGGREGATION [0007] Additionally or alternatively, the triggering of the determination, by the mobile device, as to whether the sec TECHNOLOGICAL FIELD ondary cell(s) should be deactivated may be based in part on [0001] An example embodiment of the invention relates to information received from one or more devices (e.g., white the ?eld of wireless communications and, more particularly space databases, co-existence managers, etc.). The informa relates to a method, apparatus and computer program product tion received from one or more devices may specify instances for con?guring frequency aggregation in a cellular commu or times that the mobile device may utiliZe the frequency nication system. spectrum of the secondary cell. In addition, the information received from the devices may include data specifying that BACKGROUND the mobile device is prohibited from using the frequency spectrum of the secondary cell(s) due to a right of priority to [0002] Modern wireless telecommunication systems aim to utiliZe the frequency spectrum of the secondary cell(s) by one provide e?icient utiliZation of the available frequency spec or more primary users (e.g., a TV broadcaster, a wireless trum so as to maximize capacity and throughput. Multiple microphone(s), etc.). systems or sub-systems may even be allocated to share a [0008] Based on receipt of information from one of the common frequency band which may be shared in a dynamic devices indicating that frequency spectrum is being allocated manner between the systems. Such dynamic spectrum utili for usage to a primary user, the mobile device may initiate a Zation typically requires capability of detecting free radio determination that the secondary cell should be deactivated. resources and taking them into use ef?ciently so as to ensure In this regard, the mobile device may generate a message e?icient operation and/ or reduced interference towards other (e.g., a deactivation message) that may be sent to a network systems, for example. device (e. g., a base station (e. g., an e-Node B (eNB)) suggest [0003] At present, communication devices may utiliZe ing or instructing the network device to deactivate the sec aggregated frequencies such as primary frequency spectrum ondary cell. as well as a secondary frequency spectrum for capacity, band [0009] In one example embodiment, a method for generat width and throughput. In some instances, local conditions of ing a determination to deactivate a secondary cell is provided. a secondary cell associated with the secondary frequency The method may include determining that at least one sec spectrum may suggest that the secondary frequency spectrum ondary cell is to be deactivated based at least in part on a should no longer be utiliZed and that the secondary cell should measurement(s) of the secondary cell or receipt of informa be deactivated. tion associated with a frequency spectrum of the secondary [0004] Currently, a network entity typically initiates the cell. The method may further include generating a deactiva decision to deactivate a secondary cell. However, in some tion message in response to the measurement indicating an cases, the network entity may not have ?rst hand knowledge interference with the secondary cell or the received informa about the local conditions of the secondary cell. In this regard, tion indicating that the frequency spectrum should no longer the network entity may not always be capable of making the be used by a ?rst device. The method may further include best or most reliable determination as to whether to initiate enabling provision of the deactivation message to a network deactivation of a secondary cell. device. BRIEF SUMMARY [0010] In another example embodiment, an apparatus for generating a determination to deactivate a secondary cell is [0005] A method, apparatus, and computer program prod provided. The apparatus may include a processor and a uct are therefore provided for enabling a mobile device to memory including computer program code. The memory and e?iciently and reliably, for example, determine whether to the computer program code are con?gured to, with the pro initiate deactivation of a secondary cell. In response to facili cessor, cause the apparatus to determine that at least one tating deactivation of the secondary cell, Carrier Aggregated secondary cell is to be deactivated based at least in part on a frequency associated with the secondary cell may no longer measurement(s) of the secondary cell or receipt of informa be utiliZed by the mobile device. In this regard, one or more tion associated with a frequency spectrum of the secondary non-cellular frequencies (e.g., a white space frequency, an cell. The memory and computer program code may further unlicensed frequency, etc.) provided by the secondary cell cause the apparatus to generate a deactivation message in may be released such that the mobile device (e. g., user equip response to the measurement indicating an interference with ment (UE)) does not currently use the non-cellular frequen the secondary cell or the received information indicating that cies or does not use the non-cellular frequencies until some the frequency spectrum should no longer be used by the time in the future. apparatus. The memory and computer program code may [0006] As such, an example embodiment of the invention further cause the apparatus to enable provision of the deacti may enable a mobile device to initiate deactivation of one or vation message to a network device. more secondary cells utiliZing Carrier Aggregation. In an [0011] In another example embodiment, an apparatus for example embodiment, Carrier Aggregation may, but need generating a determination to deactivate a secondary cell is not, be associated with aggregated frequencies in white space provided. The apparatus may include a processor and a frequency spectrum, unlicensed frequency spectrum, cellular memory including computer program code. The memory and frequency spectrum and any other suitable frequency spec the computer program code are con?gured to, with the pro trum. The triggering of the determination, by the mobile cessor, cause the apparatus to receive a deactivation message device, as to whether the secondary cell(s) should be deacti from a device. The deactivation message is generated in vated may be based in part on one or more measurements response to at least one measurement indicating an interfer associated with the secondary cell which may indicate a dis ence with a secondary cell or receipt of information indicat US 2012/0282942 A1 Nov. 8, 2012 ing that a frequency spectrum of the secondary cell should no vided. The method may include receiving a deactivation mes longer be used by the device. The memory and computer sage from a device. The deactivation message is generated in program code may further cause the apparatus to determine response to at least one measurement indicating an interfer Whether to deactivate the secondary cell based in part on the ence With a secondary cell or receipt of information indicat received deactivation message.
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