41results about How to "Ensure backward compatibility" patented technology

A downlink control channel transmitted from a base station apparatus includes multiple control channel elements (CCEs), and different PUCCH resources are determined depending on which CCEs are associated with control information destined for user equipments. If a PDSCH in a certain subframe is assigned to a user equipment in an old system, the control information destined for the user equipment is assigned to a certain CCE, and a PDSCH in a subframe after a predefined time period from the certain subframe is assigned to a user equipment in a new system, the control information destined for the user equipment may be associated with a CCE different from the certain CCE. Alternatively, the control information destined for the user equipment in the second system may be associated with the same CCE as the control information destined for the user equipment in the first system but may be spread with different spread codes.

A method for creating variants of a DTV service, a method which is simpler than the method defined in GBS0600, and the method can handle all use-case scenarios for simulcast linking in a way almost equal to that defined in GBS0600. The method introduces switching between a mother service and a variant service, the mother service being a default service to which a receiver should tune, and the variant service being a service selected at a receiver side and linked to the mother service by a service link defining a switching relation between the mother service and the variant service. The method is defined by including switching information into the data-stream of the mother service, receiving the mother service data-stream, reading the switching information, and switching from the mother service to the variant service accordingly. The switching information can be carried in EPG data and thus utilize existing data structures. EPG data of the mother service, e.g. in the form of EIT data, can be used to carry switching data, expect for variant service events different from the mother service, where the EPG/EIT data are preferably cross-carried by the mother and variant service. Preferably, the receiver selects which one of a plurality of possible variant service to switch to, e.g. based on receiver capabilities and/or user access rights. Thus, EIT carriage efficiency for services with a large degree of sharing is high, and it offers advantages in tuning speed. Further, the method will lead to simpler and consistent receiver implementations.

The present invention discloses a downlink control channel transmission method, characterized by comprising: user equipment (UE) receives a first downlink control information (DCI) and a second DCI, wherein, the first DCI and the second DCI are used for jointly indicating scheduling information carried by a downlink control channel; the UE determines the first DCI as a primary DCI and the second DCI as a secondary DCI; and the UE acquires the scheduling information carried by the downlink control channel according to the primary DCI and the secondary DCI. Also disclosed in the present invention are a communication device and a system. According to the solution provided by the present invention, the transmission of the downlink control channel corresponding to an extended resource is indicated, and the backward compatibility of the control channel is ensured.

The present invention discloses a transmission method with multi-carrier aggregation, which includes: performing uplink and downlink configurations for each of the component carriers aggregated in a cell and ensuring coexistence of at least one identical uplink sub-frame and at least one identical downlink sub-frame between at least two of the component carriers and compliance of the configuration of at least one of the component carriers with an uplink and downlink configuration of R8; and transmitting the uplink and downlink configuration of any one of the component carriers and those of the other component carriers aggregated with the any one component carrier to an LTE-A UE accessing the corresponding component carrier. The invention further provides a transmission device with multi-carrier aggregation. With the invention, uplink and downlink configurations in an LTE-A system can be performed to accommodate a demand of a TDD system.

A method of transmitting reference signals in a communication network from a first network element to a second network element is provided, wherein the method includes transmitting first type of reference signals using a first resource of a frame wherein the first type of reference signals are related to a first communication system, and transmitting second type of reference signals using a second resource of the frame wherein the second type of reference signals are related to a second communication system.

The present invention provides a method of integrating existing strong encryption methods into the processing of a .ZIP file to provide a highly secure data container which provides flexibility in the use of symmetric and asymmetric encryption technology. The present invention adapts the well established .ZIP file format to support higher levels of security and multiple methods of data encryption and key management, thereby producing a highly secure and flexible digital container for electronically storing and transferring confidential data.

The present invention provides a method and a system for processing a measurement event in a multi-carrier system. The method for processing a measurement event in a multi-carrier system comprises: a mobile terminal receives a measurement assignment configured and transmitted by a network side device (S302); the mobile terminal determines a serving cell and a neighbour cell corresponding to the received measurement assignment (S30); the mobile terminal measures the determined serving cell and neighbour cell (S306); and when a measurement result meets a report condition of a measurement event corresponding to the received measurement assignment, the mobile terminal reports the measurement result (S308). By configuring measurement events and assignments for different serving cells, the present invention solves the problem that a measurement event cannot distinguish between a primary serving cell and a secondary serving cell in the conventional art, thus the mobile terminal can implement measurement and reporting under the configuration of multiple serving cells.

The present invention discloses a method and system for channel data transmission in a wireless network. The method includes: after a transmitting station and a receiving station determine a channel bandwidth to use for data transmission by interaction and negotiation, the transmitting station transmitting data to the receiving station with the determined channel bandwidth. The present invention further discloses a transmitting station. The present invention can solve the existing collision problem caused by contention for channels between the hidden stations and the current transmission stations, and thus can take full advantage of the effective transmission bandwidth in the large bandwidth system of a wireless network and increase the frequency spectrum utilization of large bandwidth, and at the same time ensure the backward compatibility with the large bandwidth system and its co-existence with conventional systems.

A DC charging circuit has a pair of switches and a battery pack with a maximum voltage capacity, and a power inverter module (PIM). The pair of switches connects/disconnects the battery pack to/from the PIM. An electric machine has phase windings sharing a motor neutral terminal. The phase windings are electrically connected to respective switching pair of the PIM. A switching module has one or two additional switches selectively connecting the PIM to the station, and a center switch selectively connecting the station to the motor neutral terminal. A controller executes a method that establishes a boost mode of the PIM when the maximum voltage capacity exceeds the maximum charging voltage. The boost mode is established by closing the pair of switches of the RESS, closing the center switch of the switching module and one of the additional switches, and opening the other additional switch if present.

A system and method for determining the remaining free storage capacity of a media database in a media server device (MSD), such as one used in a universal plug and play audio-visual (UPnP AV) architecture. The present invention allows a user of a MSD hosting a content directory service (CDS), prior to a large copy or move operation, to query the media database of the MSD as to the remaining free storage capacity. In one embodiment of the present invention, a query action is implemented in a control point (CP), allowing the CP to query the CDS, which in turn queries the MSD file system/operating system (OS) to determine the remaining free capacity storage of the media database. This capacity information is then sent back to the CP for presentation to a user of the MSD. In a second embodiment, the query is implemented as a dedicated AV MSD service. In a third embodiment, UPnP eventing and a new state variable capable of indicating the remaining free storage capacity is used.

A universal document exchange system and method provides a document exchange service to a user.

The invention discloses a transmission layer control method based on network coding. The implementation scheme of the method comprises the following steps: a transmitting terminal divides the data streams to be transmitted into groups and blocks, wherein each block contains blksize groups, and blksize is the value of the bandwidth multiplied by the network delay; the transmitting terminal codes the groups and then sends the groups; a receiving terminal receives the groups, and then initializes a coding coefficient matrix Cblkno and a corresponding loading matrix Pblkno for each block, also fills the matrix by using the parameters in the groups, and then transmits the ACK corresponding to the groups; the transmitting terminal receives the ACK, and acquires the feedback information in the ACK to schedule the transmission of the groups and the update of the network parameters; and if both the coding coefficient matrix Cblkno and the loading matrix Pblkno are in full rank, and the freedom degree of the blocks is enough, the blocks are decoded, and the data is transmitted to the applications. According to the transmission layer control method based on network coding disclosed by the invention, the problem that the data transmission performance of the wireless communication equipment is seriously affected under the public open frequency band with interference can be solved, the throughput can be increased, and the network time delay can be reduced.

Conventionally, all active UEs monitor an absolute grant channel. When a transmission from an eNB occurs, each UE tries to decode the grant message (e.g. by performing a CRC check with its E-RNTI, which is associated uniquely to each UE in the cell). If a UE successfully decodes the grant, it starts a grant update procedure, setting its Serving Grant to the value indicated in the grant message. The eNB then sends a further grant command indicating a Serving Grant value of zero to the other UEs, in order to silence them. According to the invention, any UE which receives an absolute grant that is not intended for it (e.g. the CRC check fails) automatically sets its Serving Grant to zero. This way a single grant command provides an absolute grant for one UE and at the same time silences other UEs in a cell. The eNB does not need to send the further grant command to UEs other than the one for which the absolute grant is intended. With respect to the conventional art, the signalling overhead is thus reduced and the problem of not utilized TTIs (because only one absolute grant may be transmitted per TTI) is solved.

A production method and system are provided for enabling the secure sharing of a common prize fund across multiple lottery or contest games and/or sub games. By sharing common inventory control and validation files the multiple games will validate on existing lottery or contest systems without the need for any software or hardware modifications. These methods and systems enhance the games, as well as potentially expand the consumer base for the games.

Provided are a communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT), with a transmission and receipt processing method and device for time-frequency synchronization between V2X terminals. When a synchronization signal to be transmitted is identical to a synchronization signal of an existing D2D terminal, time-frequency resources configured for the D2D terminal in a cell are reused to transmit the synchronization signal. When synchronization signal to be transmitted is different from a synchronization signal of an existing D2D terminal, reconfigured time-frequency resources are used to transmit the synchronization signal. The synchronization signal transmitted by a V2X terminal indicates a corresponding synchronization source type by using a value of an SLSS sequence index and/or a value of a PSBCH specified field.

The invention provides an improved data compression method for HDMI transmission in the aspect of intercommunication and interconnection, which specifically comprises the following steps that: source equipment analyzes EDID content to know the overall capability of display equipment; particularly, by analyzing the SCDS data structure, the capability of the display device on the DSC, including the FRL maximum rate and the number of DSC chip processing units (such as eight), is known; the fourth bit of the 8th byte of the SCDS is DSC_422_Option, and if the fourth bit of the 8th byte of the SCDS is 1, the display equipment can support 4: 2: 2 DSC under specific conditions (such as 8K120), so that the required DSC resource is less than that of 4: 4: 4 DSC; if the value is 0, the display device does not support 4: 2: 2 DSC under the specific condition. HDMI2.1 equipment is allowed to conditionally support at most 8 DSC chip units, so that normal work of 8K120422 video streaming is guaranteed, meanwhile, other scenes are not affected, backward compatibility is guaranteed, and the problem that VESA DSC capacities of HDMI receiving and transmitting ends are not matched is solved.