343 results about "Broadcast control channel" patented technology

A public mobile communications network is configured in accordance with an established protocol which includes a private network portion to which only a selected set of mobile stations have access. The selected set of mobile stations has a private network identity code which is different from a public network identity code. A base transceiver station of the private network portion broadcasts the private network identity code on its broadcast control channel. A mobile switching center prevents public subscriber mobile stations from registering via the private network portion, while the private subscriber mobile stations are allowed to register over the entire network.

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.

A method for a mobile station and a base station to which the mobile is being handed over, and corresponding apparatuses for use by the mobile and the base station. The method for use by the mobile station is for determining whether dynamic configurations are in use by the base station to which the mobile is being handed over, and the method for use by the base station is for determining whether to use a dynamic configuration (if the base station uses dynamic configurations) or to switch to a static preconfiguration in communicating with the mobile. The base station to which the mobile is being handed over is of one wireless communication system (such as the UTRA wireless communication system) and the base station doing the handing over is of another type (such as GSM). Both base stations are assumed to broadcast control signals on a respective broadcast control channel.

A telecommunications system and method for rapid start-up of a Global Position System (GPS) receiver integrated with a mobile terminal is disclosed. The location of a reference GPS receiver associated with a Base Transceiver Station (BTS) within the cell that the mobile terminal is currently located is used as the local position estimate for that mobile terminal. The GSM TDMA frame numbers are first correlated with the GPS clock signal. Optionally, this correlation is adjusted using the adaptive frame alignment mechanism. This local position estimate is used to ascertain the location of the GPS receiver. The correlation data is then sent to the GPS-capable mobile terminal through the Short Messaging Service (SMS) cell broadcast facility or the Broadcast Control Channel (BCCH) facility of the GSM network to enable the built-in GPS receiver to calculate its position relatively quickly.

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.

The present invention describes transmitting the page channel, which may comprise a quick page channel and a regular page channel, and the broadcast control channel, which conveys the system information, through the same time-frequency resources across the sectors of a wireless communications network.

The embodiment of the invention provides a method and equipment for notifying and reading system broadcast message update, which relate to the field of communication and can solve the problem of influence on non machine type communication (MTC) equipment when the system broadcast message related with MTC equipment is changed. The provided method for reading the updated system broadcast message comprises the following steps of: receiving page message and/or system information change indicating message, wherein the page message and/or the system information change indicating message comprise indicating information on the update of the system information related with the MTC equipment in the system broadcast message; and determining that user equipment is the MTC equipment, reading a broadcast control channel according to the indication of the indicating information, and acquiring the updated system information related with the MTC equipment in the system broadcast message.

A method for providing mobility control information to a communications device includes determining, for a transceiver device of a communication system, mobility control information of at least one further transceiver device and broadcasting system information from the transceiver device on a basic broadcast control channel, wherein the system information comprises the mobility control information of the at least one further transceiver device.

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.

The invention discloses a method and device for recognizing a pseudo base-station. The method comprises the steps that system information, broadcast through a broadcast control channel (BCCH), of a neighbor cell is acquired, wherein the system information comprises cell service parameters; whether the neighbor cell has the risk that the pseudo base-station exists or not is evaluated according to the cell service parameters; if yes, an access operation of the neighbor cell is intercepted, and/or a risk early warning prompt that the neighbor cell has the pseudo base-station is given out. By detecting the cell service parameters of the neighbor cell, the purposes of recognizing and avoiding the pseudo base-station are achieved.

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.

In the system acquisition process system information is non-coherently detected using correlation of reconstructed and received preamble signals, such as the primary broadcast control channel (PBCCH) and the acquisition pilots (TDM1, TDM2, and TDM3). The phase correlation signals between the correlated signals of PBCCH and TDM2 or TDM3 and between the correlated signals of TDM2 and TDM3 are combined to decode other sector interference (OSI) information and the like. Acquisition is also made more efficient by taking advantage of predictable information based on system synchronicity. The sync/async bit is included in at least one of the acquisition pilots. The mobile then uses knowledge of system synchronicity to more efficiently detect the additional information in the superframe preamble.

A mobile communication device (102) receives information in a broadcast control channel (108) including a page message (108). The mobile communication device measures certain parameters (210) of the control channel, such as received signal strength, channel quality, and the present automatic gain setting. These parameters are scored and weighted (300) to produce a signal quality metric (314) to determine the duration of time the mobile communication device can remain in a low power state to conserve battery charge before checking for page alert message in the broadcast control channel next.

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.

A mobile for use in the UMTS is arranged, on activation to read the Broadcast Control Channel (BCCH) for all available preamble signatures; to store the signatures in its processor; to read the Acquisition Indication Channel (AICH) for acquisition indicators sent to other mobiles; to store usage of other mobiles against each signature; and to select when required a signature the recorded usage of which is unlikely to cause collisions.

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 present invention provides a method and system for implementing multimedia broadcast multicast service, capable of reducing implementation complexity of MBMS. The method includes that: network side transmit the MBMS service configuration information to UE through broadcast control channel MCCH, UE receives MBMS service according to the received MBMS service configuration information from MCCH.In addition, the invention also provides another two methods and system for implementing multimedia broadcast multicast service, which implements MBMS service on the basis of supporting multi-frequency point characteristics.The method includes that: MCCH is configured on each frequency point of multi-frequency point cell, network side transmit the MBMS control information to UE through MCCH, UE receives MBMS service according to the received MBMS control information from MCCH.Or, MCCH is configured on main frequency point of multi-frequency point cell, network sides transmit the MBMS control information to UE through MCCH of main frequency point, UE receives MBMS service according to the received MBMS control information from MCCH of main frequency point.

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.