76results about How to "Reduce the number of blind inspections" patented technology

The invention discloses a random access method, which is used to realize the random access process, so as to realize the uplink synchronization between the user side and the network side without increasing the blind detection of the PDCCH by the UE. The method includes: the UE receives random access configuration information, and determines, according to the configuration information, a dedicated preamble sequence and dedicated PRACH resources used on a cell that needs to perform random access; The PRACH resource sends the dedicated preamble sequence to the base station; the UE detects the PDCCH scrambled with RA-RNTI in the dedicated search space, and obtains a random access response from the PDCCH, where the random access response at least includes The TA for uplink synchronization adjustment of the cell that has sent the dedicated preamble sequence. The invention also discloses a device for implementing the method.

The embodiment of the invention relates to the technical field of wireless communications, in particular to a method, a system and equipment for transmitting data, which are used for transmitting data through enhanced physical downlink control channel (PDCCH). The method for transmitting data comprises the following steps that: a network side configures transmission information of the enhanced PDCCH and/or channel resources of a candidate PDCCH, wherein the frequency of blind test of the PDCCH in a configured PDCCH search space is not higher than that of the PDCCH in a dedicated PDCCH search space of user equipment; and the network side transmits data through the configured PDCCH. Because the frequency of blind test of the PDCCH in the configured PDCCH search space is not higher than that of the PDCCH in the dedicated PDCCH search space of the user equipment, the frequency of blind test of the PDCCH, and the complexity of implementing the user equipment can be further reduced effectively on the basis of the enhanced PDCCH.

An embodiment of the invention provides a power saving method based on a discontinuous receiving function. The power saving method based on the discontinuous receiving function comprises: a terminal receives configuration information for discontinuous DRX parameter receiving of network voice call VoIP service sent by a base station; when the terminal is in a DRX activation state, the terminal performs one-time PDCCH blind detection in a long DRX Cycle when the VoIP service is in an activation period; the terminal perform one-time or two-time blind detection in a short DRX Cycle when the VoIP service is in a silence period; the terminal is in a DRX non-activation state and performs one-time or two-time blind detection in the short DRX Cycle when receiving MAC DRX CE sent by the base station. In the scheme, by setting the long DRX Cycle in the configuration information of VoIP service DRX parameters sent by the base station, the PDCCH blind detection times are decreased, and the power saving purpose is achieved.

The invention discloses a blind test efficiency improvement method for a TD-LTE (Time Division Long Term Evolution) system. Data repeat is utilized when the speed rates are matched at a sending terminal, sliding self-correlation is utilized at a receiving terminal, starting positions of data reuse are estimated, candidate sets are arranged according to the possibility, and blind tests are sequentially performed, so that the accuracy of the blind tests is improved; two large polymerization degree blind test sets are combined, so that the maximum blind test numbers are reduced; and judgment can be performed on a correlation value of a public search space first and then calculation can be performed when two search spaces simultaneously exist, so that the speed rates of the blind tests are improved. The blind test efficiency improvement method for the TD-LTE system can effectively improve the blind test efficiency and enables the blind tests to be rapid.

The invention provides a blind detection method and device of carrier aggregation. The blind detection method applied to a base station side comprises that a first control channel element (CCE) number, in which a physical download control channel (PDCCH) in a present member carrier wave in carrier aggregation is positioned, is determined; according to the CCE number, the correspondence between a second CCE number, in which PDCCHs of other member carriers in carrier aggregation are positioned, and the first CCE number is determined, so that user equipment determines the second CCE number in which PDCCHs of other member carriers in carrier aggregation are positioned according to the correspondence and the first CCE number obtained by blind detection, and the user equipment detects carriers of the corresponding members according to the second CCE number. The blind detection method can be used to reduce the frequency of blind detection greatly, and reduces complexity and power consumption of terminals.

The invention belongs to the technical field of mobile communication, and in particular relates to a PDCCH (Physical Downlink Control Channel) adaptive blind detection method based on power measurement in a 5G system. The method comprises the steps of: performing judgement of a current search space according to the RNTI type and related high-level parameters, and determining a DCI format to be detected and a corresponding search space; solving PDCCH resource mapping in the search space, taking out a control resource set in a current monitoring occasion, and solving REG bundle interweaving; performing power measurement on all candidate sets in the aggregation level in the current search space, performing descending sorting, recording the serial number of the corresponding candidate set, namely the CCE initial position, and removing a part of candidate serial numbers according to a screening rule; and, adaptively determining the current blind detection aggregation level sequence by utilizing channel quality information CQI, and performing blind detection according to the average power value of the candidate sets in the current aggregation level. By means of the method disclosed by the invention, the average blind detection time can be effectively reduced; and simultaneously, detection leakage is avoided.

The embodiment of the invention discloses a configuration method of a physical downlink control channel (PDCCH), network equipment and a terminal, belonging to the technical filed of communication. The method comprises the following steps of: determining whether a carrier convergence mode is adopted for the terminal; and when the carrier convergence mode is adopted for the terminal, configuring the PDCCH types of all or a part of constitution carriers of the terminal into a second type, wherein in the second type, downlink control information (DCI) comprises a DCI type. Due to the adoption of the technical scheme, the blind test frequency of the terminal can be reduced.

The embodiment of the invention discloses a method for detecting downlink control information, terminal equipment and network equipment, relates to the field of communication, and can solve the problem of poor service experience caused by blind detection of DCI (Downlink Control Information) under a plurality of activated BWP (Broadband Wireless Premise) scenes in the prior art. The method comprises that: a terminal device receives detection related information of a network device for detecting downlink control information (DCI) of each BWP, the detection related information is determined by the network device according to resource load of a control resource set of each BWP, and the terminal device detects each DCI according to the detection related information. The embodiment of the invention is used for detecting the DCI of a plurality of BWPs.

The embodiment of the invention discloses a method for determining a search space of a physical downlink control channel component carrier (PDCCH CC), which comprises that: user equipment acquires the activation state of a physical downlink shared channel component carrier (PDSCH CC), and determines the search space of the PDCCH CC according to the activation state of the PDSCH CC. In the embodiment of the invention, the method for determining the search space of the PDCCH CC according to the activation state of the PDSCH CC can regulate the search space in time so as to save power more effectively at the same time of reducing unnecessary PDCCH blind detection.

The invention provides a DCI transmission method, UE, and a network side device. The method comprises the following steps: the UE receives and parses first partial control information contained in theDCI by using a blind detection PDCCH, wherein the first partial control information comprises a fixed information domain, and the information domain comprises receiving information of second partialcontrol information contained in the DCI; and the UE receives and parses the second partial control information according to the receiving information. By adoption of the embodiment of the invention,the blind detection complexity of the UE receiving the DCI can be reduced, and the power consumption of the UE can be reduced.

The invention provides an information transmission method and a communication device. The method comprises the following steps: determining a corresponding relationship between a first aggregation level AL set associated with a plurality of first PDCCH candidates and a second AL set associated with a plurality of second PDCCH candidates, wherein the corresponding relationship is a corresponding relationship between at least one first AL in the first AL set and at least one second AL in the second AL set; and detecting at least one first PDCCH candidate in the plurality of first PDCCH candidates and/or at least one second PDCCH candidate in the plurality of second PDCCH candidates according to the corresponding relationship. When a plurality of DCIs are detected, the AL corresponding to theDCI to be detected can be determined according to the corresponding relationship between the ALs corresponding to the plurality of DCIs, and the DCI is detected in the PDCCH candidates correspondingto the AL, so that the DCI blind detection complexity is reduced.

The invention discloses a transmission method and device. The method comprises the following steps: selecting one or more sub-channels on some sub-frame in a resource pool, wherein the resource pool is divided into multiple frequency-divided sub-channels, and all sub-frames on the time domain use the same division scheme, or each of all sub-frames on the time domain uses the independent division scheme and different sub-frames are allowed to use different division schemes; and performing the transmission in one or more selected sub-channels. Through the transmission method disclosed by the invention, a problem caused by a situation that a control message is transmitted by randomly selecting the resource in the existing resource pool is solved, the blind test time is reduced to a certain degree, and the overhead is lowered.

The invention discloses a downlink control information detection method, a downlink control information transmission method, a terminal and a network device. The downlink control information detectionmethod comprises the following steps: obtaining indication information used for indicating a candidate downlink control information DCI load size; and performing blind detection on a physical downlink control channel PDCCH according to the candidate DCI load size indicated by the indication information so as to determine the DCI transmitted in the PDCCH. The terminal disclosed by the invention obtains the indication information used for indicating the candidate DCI load size, and performs the blind detection on the PDCCH according to the candidate DCI load size, so that the blind detection complexity can be reduced, and the blind detection times can be reduced.

The embodiment of the invention discloses a data transmission method, device and system, and relates to the technical field of communication, so as to solve the problem that the number of blind detections is increased in the existing blind detection of DCI (downlink control information). The specific solution is that the method comprises the steps that a network device sends first DCI to user equipment and second DCI, wherein the first DCI is control information indicating a PDSCH, and the PDSCH indicated by the first DCI is transmitted on the first type of time units including an SS block, the second DCI is also the control information indicating the PDSCH, the PDSCH indicated by the second DCI is sent on the second type of time units which does not include the SS block, the first DCI andthe second DCI have the same DCI format, the first DCI and the second DCI indicate different types of control information, the first DCI carries the first control information, and the second DCI carries the second control information. The embodiment of the present invention is used in a data transmission process.

The invention discloses a device and a method for PHICH resource blind detection in SIB1 decoding in a TD-LTE system. The device comprises a parallel decoding module, a DCI information correlation module, a correlation value sorting module, a blind decoding module and a PDCSCH channel decoding module. According to the detection method, parallel processing is adopted both in PDCCH decoding and DCI format blind detection on three different kinds of PHICH resources, which greatly improves the processing efficiency; and the possibility of each candidate set is evaluated through the DCI information correlation module with the use of correlation generated by repeated coding during DCI rate matching, and blind detection is carried out only on the two candidate sets with the highest possibility, thus greatly accelerating the speed of blind detection.

The invention discloses a resource mapping method and a blind detection method based on the same. A user is rapidly positioned at a recourse position of an aggregation level R according to the RNTI value of the user, then whether current information is information of the user is detected, and if not, resource information of other positions of the aggregation level R is traversed; if DCI of the user is still not found, resource information of other aggregation levels is traversed till the DCI of the user is found. By integrating resource DCI mapping and blind detection strategies, the position information of the DCI of the user can be rapidly positioned, the frequency of blind detection on a PDCCH on the user side is reduced, time delay can be reduced, the processing speed of a terminal can be increased, and the methods are necessary for an LTE system with high time relay requirements.

The invention relates to the technical field of communication and discloses a transmission method and a device for an E-PDCCH. The E-PDCCH comprises at least one E-PDCCH unit. The method comprises that the at least one E-PDCCH unit is mapped to preset positions centered by at least one resource block, wherein, the sizes of centered resources of each resource block are larger than or equal to those of resources occupied by two E-PDCCH unit, and resources occupied by the centering of each E-PDCCH unit in the resource block comprise part of resources of each resource block centered by the resource block; and the E-PDCCH is transmitted to time-frequency resources centered and mapped by the resource block. According to the transmission method and the device for the E-PDCCH, good enhanced PDCCH performances can be obtained under the situation that the time-frequency resources are fully used.

The invention provides a transmission method and device for downlink control information (DCI). The method comprises the steps of obtaining to-be-transmitted DCI in a downlink control channel; sendingfirst-level DCI to user equipment, wherein the first-level DCI comprises format information of second-level DCI and downlink resource allocation information; and sending the second-level DCI to the user equipment. According to the embodiment of the invention, the to-be-transmitted DCI in the downlink control channel is divided into two levels for transmission and the bit number of the first-levelDCI is fixed, so blind test times of the first-level DCI is relatively low, and transmission reliability is improved under the same control channel resource; the first-level DCI comprises the formatinformation of the second-level DCI, so a type of the second-level DCI can be determined, and the transmission reliability is improved; and the second-level DCI is transmitted in a physical downlinkshared data channel scheduled by a user, so downlink transmission resources can be dynamically multiplexed, and the problem that capacity of the control channel is limited is effectively solved.

The application discloses a data receiving method that can be applied to Internet of Vehicles, for example, a V2X, LTE-V, V2V and the like. A first terminal device can receive first control information from a second terminal device, then receive second control information from the second terminal device according to the first control information, and further receive data sent by the second terminal device according to the first control information and the second control information. Therefore, the second control information and the data can be received by detecting the first control information with fewer blind detection times, so that the receiving efficiency of the second control information and the data is improved.

The invention discloses an information indication method, terminal equipment and network equipment. The method comprises: determining a transmission characteristic parameter, the transmission characteristic parameter being used for sending a physical channel on a sidelink SL, the transmission characteristic parameter comprising at least one of a subcarrier spacing SCS, a cyclic prefix CP, a partial bandwidth BWP, and a configuration parameter of a demodulation reference signal DMRS; and sending transmission feature information, wherein the transmission feature information is used for indicating the transmission feature parameters. Thus, the first terminal equipment and the second terminal equipment can obtain at least one of configuration parameters of SCS, CP, BWP and DMRS. The first terminal sends the physical channel according to the parameter, and the second terminal receives the physical channel according to the parameter, so that the blind detection frequency of the receiving endis reduced, the complexity and time delay of information demodulation of the receiving end can be reduced, and the information acquisition efficiency of the receiving end is improved.