Abstract: In an embodiment, an optoelectronic module includes a printed circuit board (PCB) and a lens block. The printed circuit board (PCB) includes at least one of an optical transmitting or receiving array. The lens block may be configured for directly coupling light between one of the optical transmitting or receiving array to optical fibers in an optical cable. A method may include directly coupling light between one of an optical transmitting or receiving array and a lens block, and further coupling the light through the lens block directly to an optical fiber of an optical cable externally coupled to the optoelectronic module.

Abstract: An example optoelectronic module may include an optical subassembly (OSA), an optical port block, a housing, and a holder. The OSA may be configured to convert between optical and electrical signals. The optical port block may be attached to the OSA and may be configured to optically align a fiber optic cable with the OSA. The housing may be configured to substantially enclose the OSA and the optical port block. The holder may be configured to couple the OSA and the optical port block to the housing. The holder may be detachably coupled to the optical port block and fixedly coupled to the housing.

Abstract: Embodiments of the present disclosure provide reference signal transmitting and receiving methods and devices in an active antenna system. Port virtualization to a transmit antennas may be implemented for multiple cell-specific reference signal (CRS) antenna ports and applying different vertical beamforming vectors to implement port virtualization for the different CRS antenna ports. The User Equipment (UE) reports the maximum RSRP/RSRQ value measured based on multiple CRS ports, or the UE simultaneously reports multiple RSRP/RSRQ values and the information of the multiple CRS antenna ports. Therefore, the coverage problem of the CRS signal and Physical Broadcast Channel (PBCH)/Physical Downlink Control Channel (PDCCH)/Physical Downlink Shared Channel (PDSCH) demodulated based on CRS and the problem of measurement for Radio Resource Management (RRM) in the active antenna system may be avoided. Specifically, the following problems may be solved.

Abstract: In an embodiment, an optoelectronic module includes a printed circuit board (PCB) and a lens block. The printed circuit board (PCB) includes at least one of an optical transmitting or receiving array. The lens block may be configured for directly coupling light between one of the optical transmitting or receiving array to optical fibers in an optical cable. A method may include directly coupling light between one of an optical transmitting or receiving array and a lens block, and further coupling the light through the lens block directly to an optical fiber of an optical cable externally coupled to the optoelectronic module.

Abstract: The present application provide a reference signal transmitting method, including: notifying a User Equipment (UE) of a grid index and a reference signal port index of the UE, wherein a coverage area of a base station is divided into grids, the grid index of the UE is an index of a based on the grid index; and transmitting the reference signal on corresponding time-frequency resources based on the grid index and the reference signal port index. The present application further provides a corresponding reference signal transapparatus, and a scheduling method and appartus. According to the technical solution provided by the present application, it is possible to increase the number of ports that the system can support at the same time with low reference resource overhead, and to ensure that the interface of the reference signal is controllable and eliminable, thereby ensuring transmission realiability.

Abstract: Embodiments of the present disclosure provide reference signal transmitting and receiving methods and devices in an active antenna system. Port virtualization to a transmit antennas may be implemented for multiple cell-specific reference signal (CRS) antenna ports and applying different vertical beamforming vectors to implement port virtualization for the different CRS antenna ports. The User Equipment (UE) reports the maximum RSRP/RSRQ value measured based on multiple CRS ports, or the UE simultaneously reports multiple RSRP/RSRQ values and the information of the multiple CRS antenna ports. Therefore, the coverage problem of the CRS signal and Physical Broadcast Channel (PBCH)/Physical Downlink Control Channel (PDCCH)/Physical Downlink Shared Channel (PDSCH) demodulated based on CRS and the problem of measurement for Radio Resource Management (RRM) in the active antenna system may be avoided. Specifically, the following problems may be solved.

Abstract: An example embodiment includes a pluggable active optical cable connector configured to permanently maintain engagement of an optical interface included in an optoelectronic module. The pluggable active optic cable connector includes a lens connection section which connects a plurality of optical fibers to the optical interface, a latching portion which engages with a latch receiving portion of the optoelectronic module, the latching portion including a first engagement portion which engages with an optoelectronic engagement portion of the optical interface and a second engagement portion, and a locking portion which engages with the second engagement portion of the latching portion and locks the lens connection section in place with respect to the optoelectronic module as a plug insertion force is applied to the pluggable active optical cable connector so as to prevent the lens connection section from disengaging from the optical interface of the optoelectronic module.

Abstract: The present invention relates to the field of communications, and provides a method and a device for enhanced-physical downlink control channel (E-PDCCH) transmission and blind detection. The method is: a network side carrying out corresponding E-PDCCH transmission resource configuration for allocation of each sub-frame; and a terminal respectively adopting different modes to perform E-PDCCH blind detection in each frame, so that better link adaptation of the E-PDCCH transmission can be implemented. Therefore, the balance of E-PDCCH transmission in the sub-frames is ensured, the effect of E-PDCCH blind detection of the terminal is further improved, and the E-PDCCH demodulation performance is further promoted.

Abstract: Disclosed are a multipoint channel state information reporting method and device.

Abstract: An information transmission method and equipment based on CoMP transmission are described. A user equipment determines a main transmission point. The user equipment determines RANK information of the main transmission point as well as channel state information corresponding to the RANK information. The user equipment sends the RANK information of the main transmission point and the channel state information to a network side equipment. The UE reports channel state information of limited RANK of every transmission point, channel state information of unlimited RANK of the main transmission point, and relative phase information between the transmission points, etc., to the network side equipment.

Abstract: Disclosed is a method for transmitting channel state information, for realizing the transmission of channel information which supports CoMP transmission. The method includes: a terminal receiving from a base station control signaling which indicates to the terminal to perform channel information feedback, the control signaling including indication information about a plurality of CSI-RS resources for performing aggregation feedback; the terminal obtaining the plurality of CSI-RS resources based on the indication information to perform channel estimation and constructing a channel matrix according to a PDSCH transmission solution over a preset CSI reference resource, the correlation between the signal over the plurality of CSI-RS resources and the signal of a UERS port and the constructed channel matrix and transmitting the CSI to the base station. Also disclosed is a device for implementing the method.

Abstract: An information transmission method and equipment based on CoMP transmission are described. A user equipment determines a main transmission point. The user equipment determines RANK information of the main transmission point as well as channel state information corresponding to the RANK information. The user equipment sends the RANK information of the main transmission point and the channel state information to a network side equipment. The UE reports channel state information of limited RANK of every transmission point, channel state information of unlimited RANK of the main transmission point, and relative phase information between the transmission points, etc., to the network side equipment.

Abstract: An example embodiment includes a pluggable active optical cable connector configured to permanently maintain engagement of an optical interface included in an optoelectronic module. The pluggable active optic cable connector includes a lens connection section which connects a plurality of optical fibers to the optical interface, a latching portion which engages with a latch receiving portion of the optoelectronic module, the latching portion including a first engagement portion which engages with an optoelectronic engagement portion of the optical interface and a second engagement portion, and a locking portion which engages with the second engagement portion of the latching portion and locks the lens connection section in place with respect to the optoelectronic module as a plug insertion force is applied to the pluggable active optical cable connector so as to prevent the lens connection section from disengaging from the optical interface of the optoelectronic module.

Abstract: An example embodiment includes a pluggable active optical cable product configured to maintain engagement of an optical interface included in an optoelectronic module. The pluggable active optical cable product includes a lens connection section which connects a plurality of optical fibers to the optical interface, a clip configured to surround the lens connection section and the optical interface so as to apply a compressive force which urges the lens connection section to connect to the optical interface, an bottom shell which houses the lens connection section, optical interface, and clip, and an upper shell which is configured to be disposed on a surface of the bottom shell when assembled with the bottom shell so as to form an enclosure for the lens connection section, the optical interface, and the clip.

Abstract: The present disclosure provides a method and an apparatus for determining number of ePDCCH resource units. The method includes: determining number of symbols occupied by PDCCH, number of CRS ports, number of DMRS ports and CSI-RS configuration in a subframe; and determining resources available for transmitting an ePDCCH in PDSCH area of the subframe according to the number of symbols occupied by the PDCCH, the number of CRS ports, the number of DMRS ports and the CSI-RS configuration.

Abstract: An embodiment of the present invention relates to the technical field of wireless communications, in particular to an aerial calibration method, system and device. In the prior art, an air interface calibration method involving a user equipment (UE) requires the UE to feed back a channel coefficient, and a channel coefficient direct quantization method occupies a great deal of uplink overhead and reduces system efficiency. The present invention solves the above problem. The method in the embodiment of the present invention comprises: the UE measures a downlink channel and determines a downlink channel matrix; the UE determines a first weighting matrix for aerial calibration according to the downlink channel matrix; the UE notifies a network side of the determined first weighting matrix.

Abstract: Embodiments of the present invention disclose an information transmission method and equipment based on CoMP transmission. In the method, a user equipment determines a main transmission point. The user equipment determines RANK information of the main transmission point as well as channel state information corresponding to the RANK information. The user equipment sends the RANK information of the main transmission point and the channel state information to a network side equipment. In the embodiments of the present invention, the UE reports channel state information of limited RANK of every transmission point, channel state information of unlimited RANK of the main transmission point, and relative phase information between the transmission points, etc., to the network side equipment, thereby helping the network side to better implement flexible selection and dynamic switchover of transmission schemes. Moreover, it does not notably increase feedback expenses for the UE.

Abstract: The present invention relates to the field of communications. Disclosed are a CoMP transmission feedback method, device and system, the method comprising: determining an inter-mode reference relationship between at least two configured modes according to configuration information transmitted by a base station (s101); at each feedback instance. determining the parameter in the current mode via the parameter in a reference mode and according to the reference relationship between modes (s102); and feeding back the channel state information containing the parameter in the current mode according to the configuration of the current mode (s103). The present invention realizes the sharing of pre-coding matrix indicator/rank indicator (PMI/RI) information among a plurality of channel quality indicators (CQIs) having different interference assumptions, and realizes the sharing of RI information among different transmission points, thus achieving a dependency relationship among a plurality of feedback modes.

Abstract: An embodiment of the present invention relates to the technical field of wireless communications, in particular to an aerial calibration method, system and device. In the prior art, an air interface calibration method involving a user equipment (UE) requires the UE to feed back a channel coefficient, and a channel coefficient direct quantization method occupies a great deal of uplink overhead and reduces system efficiency. The present invention solves the above problem. The method in the embodiment of the present invention comprises: the UE measures a downlink channel and determines a downlink channel matrix; the UE determines a first weighting matrix for aerial calibration according to the downlink channel matrix; the UE notifies a network side of the determined first weighting matrix.

Abstract: Disclosed in the invention are a method and a device for transmitting downlink control information (DCI). The method comprises: processing the downlink control information to generate downlink control information code words; scrambling and modulating the downlink control information code words in turn to generate a modulation symbol sequence; mapping the modulation symbol sequence to v data layers, wherein v is an integer which is more than or equal to 1; mapping modulation symbols on the v data layers to a demodulation reference signal (DMRS) antenna port; and mapping the modulation symbols on the DMRS antenna port to a physical antenna and sending to user equipment (UE). According to the method and the device of the invention, multi-layer data transmission can be supported, the transmission mode is more flexible, and transmission efficiency is higher.