A wireless transmit/receive unit (WTRU) may monitor a common physical downlink control channel (PDCCH) search space for a downlink control information (DCI) signal and a first radio network terminal identifier (RNTI). In an example, the DCI signal may include an uplink (UL)/downlink (DL) configuration indication. In a further example, the first RNTI may be associated with UL/DL configuration information. The WTRU may transmit UL data or receive DL data based on the received UL/DL configuration indication. In another example, the DCI may include a plurality of UL/DL configuration indications. In an additional example, a plurality of WTRUs may monitor the common PDCCH search space for the first RNTI. Also, the UL/DL configuration indication may indicate UL/DL configuration information on a symbol basis. Further, the WTRU may receive a second RNTI which is associated with the UL/DL configuration indication.

According to one disclosure of the present specification, a method for applying system information changed in a terminal is presented. The method for applying the changed system information includes the steps of: receiving an indicator providing notice of a change of a system information set from a cell; receiving information on the time when the change of system information is applied; when the indicator is received in subframe n, determining that the changed system information is applied after k periods based on the information from the n subframe.

A multi-channel dual-mode digital control LED driving circuit and an LED lamp. The driving circuit comprises a current sampling module (10), a comparison and detection module (30), a digital control module (40) and a constant current control module (20). By means of feeding back an adjustment current for the load (70) by the digital control module (40), and feeding back and adjusting a current of the load (70) in real time by the constant current control module (20), the driving circuit adjusts the load (70) in real time, so that dual-mode cooperation working is realized, and thus a response speed is greatly improved, the accuracy of an output voltage and the current of the load (70) is improved, and at the same time, the system stability is enhanced and wide universality is achieved.

A transmitter can include a laser operable to output an optical signal; a digital signal processor operable to receive data and provide a plurality of electrical signals based on the data; and a modulator operable to modulate the optical signal to provide a plurality of optical subcarriers based on the plurality of electrical signals. One of the plurality of subcarriers carries first information indicative of a first portion of the data in a first time slot and second information indicative of a second portion of the data in a second time slot. The first information is associated with a first node remote from the transmitter and the second information is associated with a second node remote from the transmitter. A receiver as well as a system also are described.

Disclosed is a method for transmitting a D2D signal. The method for transmitting a D2D signal according to the present application comprises the step of transmitting a D2D signal in accordance with the D2D resource configuration, wherein a transmission of a different D2D signal may not occur in a subframe for transmitting a synchronization signal.

Provided are a method and an apparatus for communication in a TDD (Time Division Duplex) system. A terminal is notified of a change in a first UL-DL setup from a base station during a first change period and receives a second UL-DL setup updated during a second change period. The terminal refreshes a buffer for an ongoing HARQ (Hybrid Automatic Repeat reQuest) process on the basis of the first UL-DL setup according to the reception of the second UL-DL setup.

In one method, a base station sends configuration notification information to a terminal, so as to notify the terminal to set at least one radio frame meet a first subframe configuration, where the first subframe configuration includes N−1 downlink subframes, one special subframe, and zero uplink subframe. In another method, third radio frame configuration information is sent to a terminal, and second dynamic subframe indication information is sent to the terminal, so that at least one fourth radio frame is set to meet a third subframe configuration, or is set to meet a fourth subframe configuration, or at least one fifth radio frame is set to meet a fourth subframe configuration, where the third subframe configuration includes zero downlink subframe, zero special subframe, and N uplink subframes, and the fourth subframe configuration includes zero downlink subframe, one special subframe, and N−1 uplink subframes.

The method includes transmitting by a first remote communication unit an upstream symbol with a first structure onto a first communication line at a reference time point trf, wherein the reference time point trf is determined based on a time of reception of a downstream symbol with the first structure tFDX_DS_RX and a first propagation delay over the first communication line tPD1, as trf=tFDX_DS_RX−tPD1; transmitting by a second remote communication unit an upstream symbol with a second structure onto the second communication line at tTDD_US_TX=trf−tPD2 during a time interval assigned for upstream transmission on the second communication line, wherein tPD2 is a second propagation delay over the second communication line, so that the upstream symbol with the second structure transmitted by the second remote communication unit arrives at the access node at the reference time point trf.

A method for transmitting primary synchronization signals and secondary synchronization signals in new carriers is provided, which includes: with respect to a time domain, a base station side sending Primary Synchronization Signals (PSS) and Secondary Synchronization Signals (SSS) in Orthogonal Frequency Division Multiplexing (OFDM) symbols except OFDM symbols occupied by reference signals in subframes #1 and #6, or subframes #0 and #5, or subframes #1, #6, #0 and #5; and with respect to a frequency domain, the base station side sending the PSS or SSS in resources of intermediate 6 Physical Resource Block (PRB) pairs of system bandwidth; the reference signals include Demodulation Reference Signals (DMRS).

The present invention relates to a TDMA access method and device based on multiple access points. According to the problems that the existing method cannot simultaneously satisfy the demands of timeliness and reliability in actual industrial application and has low resource utilization rate, the present invention takes full consideration of the transmission characteristics and industrial automation application characteristics of wireless networks, and provides a TDMA access method and device based on multiple access points. The main ideas of the method in the present invention are: the multi-access point redundant communication manner is adopted to improve system reliability, beacon frames of multiple access points are utilized to perform time synchronization so as to improve synchronization precision, confirmation messages are fed back with regard to reliable access points to reduce the number of retransmissions, and a modularized multi-access point device design method is adopted to lower the difficulties of device maintenance and management.