Abstract: A base station determines at least one access class barring parameter based on load balance of a plurality of random access channels, and broadcasts the at least one access class barring parameter. A communication terminal receives a plurality of access class barring parameters from at least one base station, and then determines a random access channel candidate from the random access channels according to the access class barring parameters and performs a random access procedure on the random access channel candidate. Such an access class barring method can efficiently improve traffic congestions of a plurality of random access channels.

Abstract: A transmitting direct mode communication apparatus, a receiving direct mode communication apparatus and a communication path switching method thereof are provided. The transmitting direct mode communication apparatus and the receiving direct mode communication apparatus maintain a backend network connection, and communicate with each other via a direct communication connection. The transmitting direct mode communication apparatus and the receiving direct mode communication apparatus are capable of switching the communication to backend network connection rapidly and seamlessly for transmitting data normally after the direct communication connection failed.

Abstract: A base station and a device to device user equipment for a wireless communication system are provided. The wireless communication system defines a resource pool. The base station includes a storage, a processor and a transceiver. The storage stores signal quality information and traffic loading information. The processor chooses a plurality of resource blocks from the resource pool to form a device to device (D2D) resource pool according to at least one of the signal quality information and the loading information, and generates resource configuration information according to the D2D resource pool. The resource configuration information indicates the D2D resource pool. The transceiver transmits the resource configuration information.

Abstract: A base station in a spectrum sharing system includes a sensor configured to sense signals over a shared spectrum, a transceiver configured to receive at least one measurement report transmitted from at least one user terminal regarding signals over the shared spectrum sensed by the at least one user terminal and a processor configured to determine whether to utilize the shared spectrum according to the signals over the shared spectrum sensed by the sensor or acquired from the at least one measurement report. A user terminal in a spectrum sharing system includes a sensor configured to sense signals over a shared spectrum, a processor configured to generate a measurement report regarding the signals over the shared spectrum and a transceiver configured to transmit the measurement report to a base station so that the base station determines whether to utilize the shared spectrum according the signals over the shared spectrum.

Abstract: A user equipment, a base station, and data transmission methods thereof are provided. The user equipment is connected to a first base station and receives a first FDR configuration of the first base station and a second FDR configuration of the second base station. The user equipment establishes an RRC connection with the second base station. The user equipment performs data transmission with the first base station and establishes a data connection with the second base station on the same frequency band simultaneously according to the first and second FDR configurations. The user equipment performs data transmission with the first base station and performs data transmission with the second base station on the same frequency band simultaneously according to the first and second FDR configurations.

Abstract: A device to device (D2D) user equipment and a base station are provided. The D2D user equipment includes a transceiver and a processor. The transceiver receives a wireless signal having a hybrid access channel carrying a D2D hybrid access map. The processor is electrically connected to the transceiver retrieves the D2D hybrid access map from the hybrid access channel. The D2D hybrid access map indicates a D2D resource block. A first D2D user equipment transmits a D2D hybrid access request to a second D2D user equipment via the D2D resource block and the second D2D user equipment transmits a D2D hybrid access response to the first D2D user equipment via the D2D resource block. Accordingly, the first D2D user equipment and the second D2D user equipment perform D2D data transmission according to the D2D data transmission information carried in the D2D hybrid access response.

Abstract: A base station in a spectrum sharing system includes a sensor configured to sense signals over a shared spectrum, a transceiver configured to receive at least one measurement report transmitted from at least one user terminal regarding signals over the shared spectrum sensed by the at least one user terminal and a processor configured to determine whether to utilize the shared spectrum according to the signals over the shared spectrum sensed by the sensor or acquired from the at least one measurement report. A user terminal in a spectrum sharing system includes a sensor configured to sense signals over a shared spectrum, a processor configured to generate a measurement report regarding the signals over the shared spectrum and a transceiver configured to transmit the measurement report to a base station so that the base station determines whether to utilize the shared spectrum according the signals over the shared spectrum.

Abstract: A base station (BS), a user equipment (UE), a transmission control method for the BS and a data transmission method for the UE are provided. Based on user group information, the base station transmits uplink transmission control information to a plurality of the UEs in a group to make each UE contend for a plurality of subframes in the allocated unlicensed band radio resource pool. If a UE successfully contends for a subframe, the UE transmits a reservation signal and transmits an uplink data signal in the contended subframe. If the UE detects another reservation signal when contending for the subframe, the UE determines whether the another reservation signal is associated with the ID of its group. If associated, the UE transmits the uplink data signal in the subframe.

Abstract: A base station, user equipment, and channel selection method are provided. The base station can configure a Primary Component Carrier (PCC) and a plurality of Secondary Component Carriers (SCCs). The PCC is a Long Term Evolution (LTE) band, while at least one of the SCCs is not an LTE band. The base station receives a plurality of channel status parameters, wherein each of the channel status parameters corresponds to one of the SCCs. The base station sorts the SCCs according to the channel status parameters, determines a subset of the SCCs as at least one candidate SCC according to the channel status parameters, and determines a subset of the at least one candidate SCC as at least one available SCC by performing clear channel assessment for each of the at least one candidate SCC.

Abstract: A user equipment, a base station, and data transmission methods thereof are provided. The user equipment is connected to a first base station and receives a first FDR configuration of the first base station and a second FDR configuration of the second base station. The user equipment establishes an RRC connection with the second base station. The user equipment performs data transmission with the first base station and establishes a data connection with the second base station on the same frequency band simultaneously according to the first and second FDR configurations. The user equipment performs data transmission with the first base station and performs data transmission with the second base station on the same frequency band simultaneously according to the first and second FDR configurations.

Abstract: A transmission system and a transmission method for network address translation traversal are provided. The transmission system includes a private network device, a network address record device, a public network device and a network address translation server. The network address record device records an inner network address of the private network device and an outer network address corresponding to the inner network address. The public network device inquires the inner network address of the private network device and the outer network address corresponding to the inner network address from the network address record device, and generates a packet according to the inner network address and the outer network address corresponding to the inner network address. The network address translation server receives the packet from the public network device, and transmits the packet to the public network device.

Abstract: A transmission system and a transmission method for network address translation traversal are provided. The transmission system includes a private network device, a network address record device, a public network device and a network address translation server. The network address record device records an inner network address of the private network device and an outer network address corresponding to the inner network address. The public network device inquires the inner network address of the private network device and the outer network address corresponding to the inner network address from the network address record device, and generates a packet according to the inner network address and the outer network address corresponding to the inner network address. The network address translation server receives the packet from the public network device, and transmits the packet to the public network device.

Abstract: A wireless apparatus, a base station, and a communication controlling method are provided. A communication controlling system comprises the wireless apparatus and the base station. The wireless apparatus is configured to transmit a connection request to the base station and then enter a connection setup communication procedure. The wireless apparatus enters a temporary waiting status during a waiting duration after transmitting the connection request. The wireless apparatus stays in the connection setup communication procedure in the temporary waiting status. The communication controlling method is able to perform the same operations as those performed by the wireless apparatus and the base station is able to perform the operations corresponding to the wireless apparatus.

Abstract: A wireless communication system and an authentication method thereof are provided. The wireless communication system includes a User Equipment (UE), an Evolved Node B (eNodeB), a Home Subscriber Server (HSS), and a Mobility Management Entity (MME). Before the UE enters an Attachment Procedure, the MME is configured to acquire an Authentication Vector from the HSS in advance, and transmit, based on the Authentication Vector, a first Authentication Vector corresponding to the UE to the UE and a second Authentication Vector corresponding to the eNodeB to the eNodeB in advance. The eNodeB is configured to transmit a UE identifier to the UE. The UE is configured to complete an Authentication procedure with the eNodeB according to the UE identifier and the Authentication Vector.

Abstract: A base station and a device to device user equipment for a wireless communication system are provided. The wireless communication system defines a resource pool. The base station includes a storage, a processor and a transceiver. The storage stores signal quality information and traffic loading information. The processor chooses a plurality of resource blocks from the resource pool to form a device to device (D2D) resource pool according to at least one of the signal quality information and the loading information, and generates resource configuration information according to the D2D resource pool. The resource configuration information indicates the D2D resource pool. The transceiver transmits the resource configuration information.

Abstract: A device to device (D2D) user equipment and a base station are provided. The D2D user equipment includes a transceiver and a processor. The transceiver receives a wireless signal having a hybrid access channel carrying a D2D hybrid access map. The processor is electrically connected to the transceiver retrieves the D2D hybrid access map from the hybrid access channel. The D2D hybrid access map indicates a D2D resource block. A first D2D user equipment transmits a D2D hybrid access request to a second D2D user equipment via the D2D resource block and the second D2D user equipment transmits a D2D hybrid access response to the first D2D user equipment via the D2D resource block. Accordingly, the first D2D user equipment and the second D2D user equipment perform D2D data transmission according to the D2D data transmission information carried in the D2D hybrid access response.

Abstract: A wireless communication system and an authentication method thereof are provided. The wireless communication system includes a User Equipment (UE), an Evolved Node B (eNodeB), a Home Subscriber Server (HSS), and a Mobility Management Entity (MME). Before the UE enters an Attachment Procedure, the MME is configured to acquire an Authentication Vector from the HSS in advance, and transmit, based on the Authentication Vector, a first Authentication Vector corresponding to the UE to the UE and a second Authentication Vector corresponding to the eNodeB to the eNodeB in advance. The eNodeB is configured to transmit a UE identifier to the UE. The UE is configured to complete an Authentication procedure with the eNodeB according to the UE identifier and the Authentication Vector.

Abstract: A network system and a resource allocation method thereof are provided. The network system includes a base station and a mobile station. The base station retrieves mobile station information from the mobile station via a network connection, and decides a communication allocation between the base station and the mobile station according to the mobile information. The communication allocation records one or a combination of a common base station identification and a dedicated base station identification. After the base station transmits the communication allocation to the mobile station, the mobile station communicates with the base station according to the communication allocation via one or a combination of the common base station identification and the dedicated base station identification.

Abstract: A transmitting direct mode communication apparatus, a receiving direct mode communication apparatus and a communication path switching method thereof are provided. The transmitting direct mode communication apparatus and the receiving direct mode communication apparatus maintain a backend network connection, and communicate with each other via a direct communication connection. The transmitting direct mode communication apparatus and the receiving direct mode communication apparatus are capable of switching the communication to backend network connection rapidly and seamlessly for transmitting data normally after the direct communication connection failed.

Abstract: A base station, a mobile apparatus, and a communication method thereof for multicast and broadcast service (MBS) are provided. The base station and the mobile apparatus belong to an MBS zone. The base station sets an indicator in a control channel allocation of a frame. The indicator is related to a cell-specific MBS configuration of the base station. The control channel allocation is an allocation that the mobile apparatus has to read when it is in power-saving mode and when it has to receive MBS data. The MBS data is related to the MBS zone. The mobile apparatus reads the indicator in power-saving mode and can derive the cell-specific MBS configuration according to the indicator. The mobile apparatus does not have to search the whole frame to derive the cell-specific MBS configuration.