Abstract: A base station transmits control message(s) to assign each of secondary cells to a cell group in a plurality of cell groups comprising a primary cell group and a secondary cell group. The base the base station transmits a control command to the wireless device. The control command is configurable to cause transmission of a first random access preamble on a secondary cell in the secondary cell group. The control command is unconfigurable to cause transmission of a second random access preamble on any secondary cell in the primary cell group.

Abstract: A portable device transmits a payment card number to a merchant machine. The portable device generates an encrypted first message comprising a request to get information about a financial transaction. A packet filter maps the encrypted first message to a pre-established non-GBR bearer. The portable device generates a fourth message by encrypting the encrypted first message and transmits the fourth message. The portable device receives and decrypts a second encrypted message. The portable device decrypts the decrypted second message and sends financial transaction information to a display.

Abstract: A wireless device receives message(s) configuring transmissions of sounding reference signals on a secondary cell in a secondary cell group. The wireless device receives an activation command to activate the secondary cell. The wireless device transmits one or more of the sounding reference signals on the secondary cell after applying a timing advance command to the secondary cell group. The wireless device is configured to not transmit any of the sounding reference signals on the secondary cell during a period between receiving the message(s) and applying the timing advance command to the secondary cell group.

Abstract: A base station receives a first radio resource control (RRC) message comprising parameter(s) indicating whether a wireless device supports an enhanced physical downlink control channel (ePDCCH). The base station selectively transmits second RRC message(s) configuring first radio resources of a first ePDCCH. The base station makes a handover decision for the wireless device. The base station transmits a third message to a target base station. The third message comprises at least one of: parameter(s) indicating whether the wireless device supports an ePDCCH, and configuration information of the first ePDCCH.

Abstract: A base station transmits a control message to a wireless device to configure first radio resources of a control channel. The first radio resources comprise one or more sets of resource blocks in a subset of subframes in a plurality of subframes. The control message indicates configuration of the subset of subframes in which the first radio resources of the control channel are configured. The base station transmits scheduling information on the control channel for data packets transmitted on a data channel. The base station transmits the data packets on the data channel according to the scheduling information.

Abstract: A base station receives a first radio resource control (RRC) message comprising parameter(s) indicating whether a wireless device supports an enhanced physical downlink control channel (ePDCCH). The base station transmits a second RRC message causing configuration of first radio resources of a first ePDCCH and second radio resources of a first data channel. The second RRC message indicates a frequency allocation for the first ePDCCH in terms of resource blocks in a subset of subframes. The base station transmits scheduling information on the first ePDCCH in a first subframe.

Abstract: A wireless device receives message(s) configuring transmissions of sounding reference signals on a secondary cell in a secondary cell group. The wireless device receives an activation command to activate the secondary cell. The wireless device transmits the sounding reference signals if the secondary cell is activated, a timing advance command is applied to the secondary cell group, and a time alignment timer for the secondary cell group is running. The wireless device is configured to not transmit the sounding reference signals on the secondary cell during the period between receiving the activation command and applying the timing advance command.

Abstract: A wireless device receives a control command for transmission of a random access preamble on a first cell. The wireless device transmits the random access preamble in parallel with a first control packet, a second packet and/or a third packet. The wireless device determines a transmission power for the random access preamble. If a total calculated transmission power exceeds a predefined value, the wireless device reducing or scaling linear transmission power of one or more of the at least one parallel uplink transmission considering a higher priority for the transmission power of the random access preamble.

Abstract: A base station is configured to communicate employing a plurality of carriers comprising at least one prime carrier and at least one non-prime carrier. The base station may transmit a system frame number in a physical broadcast channel in a frame on a prime carrier. The base station may transmit and receive, employing a communication interface, packets in the frames on a non-prime carrier. The communication interface employs the system frame number transmitted in the frame of the prime carrier. The non-prime carrier is configured to operate without broadcasting the system frame number on the non-prime carrier.

Abstract: A base station configures a first carrier group and a second carrier group in a wireless device. The wireless device transmits first uplink signals in the second carrier group employing a first additional carrier in the second carrier group as a timing reference carrier. The wireless device autonomously changes the timing reference carrier to a second additional carrier in the second carrier group. The second additional carrier is an active carrier different from the first additional carrier. The wireless device transmits second uplink signals in the second carrier group employing the second additional carrier as the timing reference carrier.

Abstract: A base station receives a first radio resource control (RRC) message comprising parameter(s) indicating whether a wireless device supports an enhanced physical downlink control channel (ePDCCH). The base station selectively transmits second RRC message(s) configuring first radio resources of a first ePDCCH. The base station makes a handover decision for the wireless device. The base station transmits a third message to a target base station. The third message comprises at least one of: parameter(s) indicating whether the wireless device supports an ePDCCH, and configuration information of the first ePDCCH.

Abstract: A portable device transmits a payment card number to a merchant machine. The portable device generates an encrypted first message comprising a request to get information about a financial transaction. A packet filter maps the encrypted first message to a pre-established non-GBR bearer. The portable device generates a fourth message by encrypting the encrypted first message and transmits the fourth message. The portable device receives and decrypts a second encrypted message. The portable device decrypts the decrypted second message and sends financial transaction information to a display.

Abstract: A base station receives a first radio resource control (RRC) message comprising parameter(s) indicating whether a wireless device supports an enhanced physical downlink control channel (ePDCCH). The base station transmits a second RRC message causing configuration of first radio resources of a first ePDCCH and second radio resources of a first data channel. The second RRC message indicates a frequency allocation for the first ePDCCH in terms of resource blocks in a subset of subframes. The base station transmits scheduling information on the first ePDCCH in a first subframe.

Abstract: A base station transmits a control message to a wireless device to configure first radio resources of a control channel and second radio resources of a data channel. The control message indicates a starting OFDM symbol of the control channel in a subset of subframes, a frequency allocation in terms of resource blocks for the control channel, and a configuration of the subset of subframes in which the first radio resources of the control channel are configured. The second radio resources of a first data channel starts from the starting OFDM symbol in the subset of subframes.

Abstract: A base station transmits a control message to a wireless device to configure first radio resources of a control channel and second radio resources of a data channel. The control message indicates a starting OFDM symbol of the control channel in a subset of subframes, a frequency allocation in terms of resource blocks for the control channel, and a configuration of the subset of subframes in which the first radio resources of the control channel are configured. The second radio resources of a first data channel starts from the starting OFDM symbol in the subset of subframes.

Abstract: A base station transmits radio resource control message(s) to a wireless device configuring second carrier(s). Each of the second carrier(s) is assigned to a carrier group in a plurality of carrier groups comprising a first carrier group and at least one second carrier group. The control message(s) comprise parameters. If parameters comprise a carrier group index for the second carrier, the wireless device assigns the second carrier to one of the at least one second carrier group identified by the carrier group index. Otherwise, the wireless device assigns the second carrier to the first carrier group.

Abstract: A base station transmits control message(s) to a wireless device configuring secondary cell(s). The control messages comprise common parameters and dedicated parameters. The common parameters comprise random access resource parameters and power control parameters for a secondary cell. The dedicated parameters comprise a cell group index for a secondary cell and a time alignment timer for a secondary cell group. The base station transmits a control command causing transmission of a random access preamble on the random access resources of the secondary cell. Transmission power of the random access preamble is calculated employing the power control parameters.

Abstract: A serving base station transmits at least one message to configure at least one backward compatible carrier and at least one non-backward compatible carrier in a wireless device. The serving base station transmits, in response to the serving base station making a handover decision, a second message to a target base station. The second message comprises parameters indicating whether the wireless device supports configuration of non-backward compatible carriers, configuration information of at least one backward compatible carrier and/or configuration information of at least one non-backward compatible carrier.

Abstract: A base station transmits downlink control information on a first carrier starting from the first symbol of a first subframe and provides first transmission format and scheduling information for first data packets to be transmitted on a first data channel of the first carrier. The base station transmits control message(s) configuring radio resources of a second control channel of a second carrier. The radio resources comprise one or more sets of resource blocks in a subset of subframes. The control message indicates a starting OFDM symbol in a subframe and a frequency allocation for said second control channel.

Abstract: A base station is configured to communicate employing a plurality of carriers comprising at least one prime carrier and at least one non-prime carrier. The base station may transmit a system frame number in a physical broadcast channel in a frame on a prime carrier. The base station may transmit and receive, employing a communication interface, packets in the frames on a non-prime carrier. The communication interface employs the system frame number transmitted in the frame of the prime carrier. The non-prime carrier is configured to operate without broadcasting the system frame number on the non-prime carrier.