Abstract: The present disclosure provides a base station, comprising: a sending unit, configured to send a first transmission gap configuration for anchor carriers, and send a second transmission gap configuration for non-anchor carriers, wherein the second transmission gap configuration uses any one of the following three items: the first transmission gap configuration, a transmission gap configuration for non-anchor carriers, or no transmission gap.

Abstract: The present invention provides a method for configuring a non-anchor PRB executed at a base station, comprising: configuring a non-anchor PRB for a user equipment (UE) for unicast data transmission, wherein the non-anchor PRB is selected from a set of Long Term Evolution (LTE) in-band PRBs or a set of PRBs in the LTE in-band PRBs capable of being used as anchor PRBs; and sending to the UE configuration information of the non-anchor PRB. The present invention further provides a base station for executing the method, a method for determining a location of a non-anchor physical resource block (PRB) executed at a UE, and a UE for executing the method.

Abstract: The present invention provides a method for configuring a non-anchor physical resource block (PRB) executed at a base station, comprising: configuring a non-anchor PRB for a user equipment (UE) for unicast data transmission, wherein the non-anchor PRB is selected from a set of Long Term Evolution (LTE) guard band PRBs; and sending to the UE configuration information of the non-anchor PRB. The present invention further provides a base station for executing the method, a method for determining a location of a non-anchor physical resource block (PRB) executed at a UE, and a UE for executing the method.

Abstract: Embodiments of the present disclosure provide a configuration method for reference signal resource elements for NB-IoT physical downlink channel demodulation, and a corresponding base station and user equipment for executing the method. The base station according to the embodiments of the present disclosure comprises: a configuration unit, used to configure group numbers of reference signal resource element groups for narrowband Internet of Things physical downlink channel demodulation, wherein at least two reference signal resource element groups for demodulating narrowband Internet of Things physical downlink channels are predefined; and a transmitting unit, configured to transmit indication information indicating the configured group numbers of the reference signal resource element groups for demodulating the narrowband Internet of Things physical downlink channels.

Abstract: A method for transmitting non-access stratum (NAS) messages is provided, the method comprising: receiving, from a user equipment, a request message tor establishing a radio resource control (RRC) connection; and sending to the user equipment a response message RRC connection setup on a first signaling radio bearer (SRB). The response message RRC connection setup comprises configuration information for a second SRB, the second SRB is used for transmitting a first NAS message, and the configuration information is used to configure the second SRB to support a radio link control unacknowledged mode (RLC UM). The present invention further provides a corresponding base station and user equipment.

Abstract: The present invention provides a method for transmitting a downlink signal, which is suitable for narrow-band systems such as NB-IOT, eMTC and MMTC, a base station for executing the method, and a user equipment. The method comprises: receiving a master information block; parsing a field in the received master information block, the field being used to indicate a starting OFDM symbol for downlink reception; and receiving a downlink signal according to the parsed starting OFDM symbol.

Abstract: Embodiments of the present invention provide a group communication method, system, group server, and group member device. A group server receives notification messages sent by a group member device, aggregates, according to an address of a subscription device, the notification messages destined for the same subscription device, and sends a notification message obtained after aggregation to the subscription device. By aggregating multiple messages sent by the group member device to the subscription device, messages exchanged between the group member device and the subscription device are reduced, thereby reducing communication traffic between the group member device and the subscription device.

Abstract: Provided is a method executed by user equipment, comprising: receiving a radio resource control (RRC) connection reconfiguration message; determining whether the received RRCConnectionReconfiguration message contains indication information, the indication information indicating user equipment (UE) to reconfigure a first type of data radio bearer (DRB) into a second type of DRB that is different from the first type of DRB; and in a case where the received RRCConnectionReconfiguration message contains the indication information, reconfiguring the UE according to the RRCConnectionReconfiguration message, wherein the first type of DRB comprises a main cell group (MCG) DRB or a wireless local area network (WLAN) split DRB, and the second type of DRB comprises an MCG DRB, a WLN split DRB or a WLN non-split DRB. Corresponding user equipment is also provided.

Abstract: Provided is a method executed by user equipment, including: receiving a radio resource control (RRC) connection reconfiguration message; determining whether the received RRCConnectionReconfiguration message contains indication information, the indication information indicating user equipment (UE) to reconfigure a first type of data radio bearer (DRB) into a second type of DRB that is different from the first type of DRB; and in a case where the received RRCConnectionReconfiguration message contains the indication information, reconfiguring the UE according to the RRCConnectionReconfiguration message, wherein the first type of DRB includes a main cell group (MCG) DRB or a wireless local area network (WLN) non-split DRB, and the second type of DRB includes an MCG DRB, a WLN split DRB or a WLN non-split DRB. Corresponding user equipment is also provided.

Abstract: Provided is a resource allocation method suitable for a downlink control channel of a narrowband MTC UE, and a base station and an MTC UE for executing the method. The method according to embodiments of the present invention includes: allocating one or more MPDCCH-PRB-sets for an MTC UE in order to transmit the MPDCCH, the numbers of PRB-pairs in the MPDCCH-PRB-sets being 2, 4, or 6; and transmitting MPDCCH allocation information to the MTC UE, the MPDCCH allocation information including information indicating the MPDCCH-PRB-sets. The allocated MPDCCH-PRB-sets may be associated with repetition levels.

Abstract: Embodiments of the present invention provide a group communication method, system, group server, and group member device. A group server receives notification messages sent by a group member device, aggregates, according to an address of a subscription device, the notification messages destined for the same subscription device, and sends a notification message obtained after aggregation to the subscription device. By aggregating multiple messages sent by the group member device to the subscription device, messages exchanged between the group member device and the subscription device are reduced, thereby reducing communication traffic between the group member device and the subscription device.

Abstract: Provided are a frequency domain resource allocation method for a paging message of an MTC user equipment, a corresponding network node and a user equipment. The method according to embodiments of the present invention comprises: allocating a resource block set for sending a paging message to an MTC user equipment; and sending resource allocation indication information to the MTC user equipment, with the resource allocation indication information including first information indicating the position of a starting resource block of the resource block set and second information indicating the number of resource blocks which are continuously allocated and included in the resource block set. By means of the embodiments of the present invention, a user equipment can determine the position of a paging message on a frequency domain, so as to read the paging message.

Abstract: Provided in the present invention is a method, base station, and user equipment for configuring a serving cell group. The method includes: a base station transmitting serving cell group configuration information to a user equipment having carrier aggregation capability, where the serving cell group configuration information indicates a reference cell used for transmitting uplink control information of a serving cell. The present invention allows the base station to flexibly configure multiple PUCCH reference cells and to configure different PUCCH reference cells on the basis of different cell loads.

Abstract: Provided are a method for instructing update of machine type communication (MTC) system information, a base station (BS) supporting MTC, and a user equipment (UE). The MTC system information comprises system information required by a first-type MTC UE and system information required by a second-type MTC UE. The method comprises: when system information required by a first-type MTC UE is updated and/or system information required by a second-type MTC UE is updated, generating an instruction message containing a related MTC system information update instruction identifier; and sending the generated instruction message. The embodiments of the present invention can reduce the number of times an MTC UE reads the system information, thereby saving on the energy consumption of the MTC UE.

Abstract: Provided is a method for sending a random access response (RAR) message, which is executed by a base station, and includes: receiving a preamble sent by user equipment (UE); determining a repetition level according to the preamble, and determining, according to the repetition level, a physical resource block set used for sending the RAR message; and sending the RAR message on the determined physical resource block set to the UE. Also provided are a method for receiving a random access response (RAR) message and a corresponding base station and user equipment.

Abstract: The present invention provides a method for receiving/sending a paging message and corresponding network node/user equipment. The method comprises: receiving an indication for a physical resource block group for transmitting the paging message, determining an index of the physical resource block group in a subframe according to the level of the paging message; and receiving the paging message over the indicated physical resource block group. According to the technical solution, a paging message transmission mechanism applicable to enhanced coverage MTC user equipment and/or low-complexity or low-cost MTC user equipment can be provided.

Abstract: The present disclosure provides a method performed by a Packet Data Convergence Protocol (PDCP) entity and the PDCP entity.

Abstract: The present disclosure provides a mechanism allowing a PDCP transmitting entity to move a transmitting window even after a packet loss over an Xn interface. According to an embodiment, a timer is provided in the PDCP transmitting entity and is started when it is determined that a packet loss may occur. The transmitting window can be moved when the timer expires, regardless of whether a PDCP PDU corresponding to a lower limit of the transmitting window has been acknowledged to be successfully transmitted or not. According to a further embodiment, a PDCP receiving entity maintains a receiving window and a t-Reordering timer is used to assist the PDCP transmitting entity to move the transmitting window. In this way, even if a packet loss occurs over the Xn interface, the transmitting window can be moved to continue transmitting subsequent PDCP PDUs.

Abstract: The present disclosure provides a method performed in a Secondary evolved NodeB (SeNB) for discarding a Radio Link Control (RLC) Service Data Unit (SDU) received from a Master eNB (MeNB). The method comprises: starting a RLC discarding timer associated with the RLC SDU received from the MeNB; removing the RLC discarding timer when the RLC discarding timer has not expired and any portion of the RLC SDU has been mapped to a RLC Protocol Data Unit (PDU); and discarding the RLC SDU when the RLC discarding timer expires. The present disclosure also provides a MeNB and a SeNB. With the present disclosure, it is possible to save storage space by reducing storage of expired RLC SDUs in the SeNB and save radio transmission resources by avoiding transmission of expired RLC SDUs.

Abstract: The present disclosure provides a method in a secondary Base Station (BS) for reporting a downlink data transmission state to a master BS. The method comprises: transmitting, by the secondary BS, one or more Packet Data Convergence Protocol (PDCP) Protocol Data Units (PDUs) from the master BS to a User Equipment (UE); and transmitting, by the secondary BS, to the master BS a downlink data transmission state message including a sequence number of at least one PDCP PDU that has been transmitted successfully. The present disclosure also provides a method in a master BS for discarding PDCP PDUs as early as possible. The method comprises: receiving, by the master BS, from a secondary BS a downlink data transmission state message; and discarding, by the master BS, one or more PDCP PDUs stored in the master BS based on the downlink data transmission state message. The associated master BS and secondary BS are also provided.