350 results about "Broadcast control channel" patented technology

A system and a method to automatically select a frequency set in a low-tier radio communication system, sharing frequencies with an overlapping high-tier cellular radio system, that minimally interferes with the high-tier system employing frequency hopping is described. The present invention makes use of the broadcast information that is transmitted by the high-tier radio base stations on their broadcast control channels (BCCH), which contains not only the BCCH carrier frequencies of surrounding cells, but also information regarding the frequencies applied in the considered cell for frequency hopping traffic channels. With this broadcast information, the low-tier system can derive the frequency planning of the high-tier system, and can then derive a frequency set for low-tier usage that minimally interferes with the overlapping high-tier system. The advantage with this technique is that only measurements on BCCH carriers have to be performed, which are non-hopping, have a constant transmit power, and have a continuous (non-bursty) signal.

Transmissions on the dedicated channel are encoded using a set of paramaters that are picked from a large selection of potential parameters. If the remote station does not know the particular set of parameters that were used by a base station, then the remote station would have to attempt to decode the transmission using every set of parameters, until the transmission is decoded correctly. This is an inefficient methodology. Hence, transmission format information is typically transmitted on a broadcast channel so that a remote station could receive the transmission format information. However, the broadcast channel has reliability problems. New methods and apparatus are presented to allow a base station to determine an overlapping set of Walsh code sequences that can be used to send the transmission format information on the dedicated channel, rather than a broadcast channel. Using the overlapping set allows the remote station to decode the information.

A method for transmitting connection set-up parameters of a packet data network on broadcast control channels in a telecommunications system, which comprises at least one cell, which uses a circuit-switched and a packet-switched broadcast/common control channel. At least one mobile station supports the packet data network and is arranged to listen to at least one of said broadcast/common control channels. The connection set-up parameters of the packet data network are transmitted to mobile stations in the cell on both broadcast control channels, if the cell supports the transmission of the connection set-up parameters of the packet data network on both broadcast control channels. The mobile station transmits to the packet data network a DCCM indication, if the mobile station is capable of receiving control messages on both common control channels, and the telecommunications system is directed to transmit control messages to the mobile station on one of the common control channels.

A base station for use in an OFDM/OFDMA wireless network. The base station transmits system-specific broadcast control channel (BCCH) information in a first group of time-frequency slots and transmits cell-specific BCCH information in a second group of time-frequency slots. The time-frequency slots in the first group are orthogonal to the time-frequency slots in the second group. The base station transmits the system-specific BCCH information in the same time-frequency slots as a neighboring base station. The neighboring base station transmits cell-specific BCCH information in a third group of time-frequency slots that may or may not be orthogonal to the time-frequency slots in the second group.

An apparatus and a method for calculating an enhanced observed time difference from a mobile station and transmitting the enhanced observed time difference to a servicing mobile location center for a location-based service are provided. The apparatus comprises means for receiving a location-measuring request and assistance data from the servicing mobile location center; means for choosing a base transceiver station, the synchronization channel of which is to be measured, based on response time detected from the location-measuring request and a predetermined priority; and means for calculating an enhanced observed time difference for the chosen base transceiver station and transmitting a location-measuring response, including the calculation result, to the servicing mobile location center. A first priority is assigned to an overlap between a channel list included in the assistance data and a list of a number of nearby cells and a second priority is assigned to a broadcast control channel allocation list except the channel list included in the assistance data and the list of nearby cells.

A solution for power efficient transmission in a wireless telecommunication system is provided. The telecommunication system utilizes a time slot based data transmission scheme. According to the provided solution, at least a portion of time slots is allocated to a broadcast control channel on a given frequency and to at least one different channel. The transmit power levels of the time slot or time slots allocated to another channel or other channels than the broadcast control channel are then adjusted on the basis of contents of the time slots. The broadcast signal is then transmitted with a given transmit power level on a time slot allocated to the broadcast control channel, and a signal or signals on other time slots are transmitted with the adjusted transmit power level.

A wireless communication system and method provide air interface channels using diverse multiframe types on a single frequency carrier. Physical channels for a single frequency carrier are defined as time slots, a series of consecutive time slots define a frame, and a plurality of multiframe types are defined for the single frequency carrier as including different numbers of consecutive frames. By multiplexing a plurality of multiframe types onto a single frequency carrier, diverse channels types such as traffic channels, broadcast control channels, and common control channels can be accommodated on the same frequency carrier to enable efficient utilization of frequency resources. In one exemplary implementation, a first multiframe type is defined as having x consecutive frames, a second multiframe type is defined as having y consecutive frames, and a third multiframe type is defined as having z consecutive frames. Thus, the frame number for the first multiframe type is counted modulus x, the frame number for the second multiframe type is counted modulus y, and the frame number for the third multiframe type is counted modulus z. The first, second, and third multiframe types are further assigned to different time slots. For example, if a frame is defined as having three time slots, the first multiframe type may be assigned to the first time slot, the second multiframe type may be assigned to the second time slot, and the third multiframe type may be assigned to the third time slot.

The invention discloses a method and a terminal for indicating resources. The method comprises the steps that: the terminal acquires position information of a multicast control channel radio network temporary identity MC-RNTI which is used for indicating resource allocation of a multicast control channel on a broadcast control channel; and the terminal acquires the MC-RNTI in a physical downlink control channel according to the position information of the MC-RNTI. By the information indication of the MC-RNTI, the terminal can acquire the resource position of an MCCH in the single-cell or multi-cell mode so as to acquire control information related to a multicast service, simplify the complexity of a system, reduce power consumption of the terminal and improve the service efficiency of an MBMS.

A shared uplink acknowledgment (ACK) channel can be communicated to the payload recipient. The shared uplink ACK channel information can be communicated in the payload message or in a broadcast control channel. Reserving a dedicated time-frequency chunk for these short ACK messages and multiplexing different users to the same time slot with spreading codes having good cross-correlation properties can be used to accomplish such a shared uplink ACK channel.

The embodiment of the invention provides a notifying and reading method and device of the update of a system broadcast message, relates to the field of communication, and can solve the problem of the influence of the change of the system broadcast message associated to an MTC (Multimedia Telephone Communication) device to a non-MTC device. The reading method of the updated system broadcast message includes receiving a paging message and/or a system information change instruction message which include instruction information of the update of system information related to the MTC device about the system broadcast message; and reading a broadcast control channel to obtain the updated system information related to the MTC device in the system broadcast message according to the instruction of the instruction message when a user device is judged to be the MTC device.

The invention provides a method and a terminal for measuring cells. The method comprises following steps: the terminal receives broadcast control channel distribution BA list issued by a network side device, wherein the BA list comprises information of cells adjacent to the service cell where the terminal locates; the terminal performs measurement to the service cell to obtain measurement results of the service cell; if the measurement results of the service cell satisfy a first triggering condition, then at least one of adjacent cells included in the BA list is measured by the terminal. According to the cell measurement method provided by one embodiment of the invention, through measuring the terminal service cell, when the measurement results satisfy the triggering condition, the measurement of adjacent cells is enabled so that frequent measurement of adjacent cells is avoided, and electric energy consumption of the terminal is reduced.

The invention provides a method for controlling cell reselection and a wireless communication terminal. The method for controlling cell reselection comprises the following steps: the resident number of cells per unit time is recorded to judge whether frequent reselection is performed; and if so, a frequent reselection protection strategy is started to record the cells with lower priorities in an inhibited reselection cell list, thus the terminal can reside in the cell with higher service quality or with more stable signal level as far as possible. By adopting the method for controlling cell reselection, the problem that the broadcast control channel (BCCH) information is decoded by the mobile terminal as the target cell is inhibited or not accessed can be avoided, the standby power can be reduced, the operating efficiency of protocol stack can be increased; and the reselection parameter can be adjusted dynamically according to the wireless environment, the frequent reselection problem caused by the frequent fluctuation of the electrical level of the cell can be avoided, and the quality of wireless communication service and the user experience can be increased.