Abstract: The present invention provides a method for processing a trunked service attribute, which includes: after a User Equipment (UE) enters a Radio Resource Control Connected (RRC_Connected) state and when a trunked called service is operated on the UE, informing, by the UE, a base station of a trunked service attribute.

Abstract: The present disclosure discloses a method and system for waking a sleeping trunking terminal. A trunking terminal determines whether to enter a sleeping mode in a standby status, calculates a waking monitoring time point of the group according to the group sleeping parameter of the group, enters the sleeping mode at a sleeping start time point of the trunking terminal, wakes up and monitors whether a group paging message is received at the waking monitoring time point of the group, wakes up, joins the group and monitors a group downlink sharing channel when the group paging message is received, and continues sleeping when the group paging message is not received. In a network side, a trunking switching center transmits a group establishment message to a base station. The base station calculates the waking monitoring time point, and transmits the group paging message at the waking monitoring time point.

Abstract: The present disclosure provides a method and system for scheduling group resources during trunking communication. The method includes: classifying base stations connected to a trunking switch center into at least one co frequency base station set and marking a base station that cannot be classified into the at least one co frequency base station set as a different frequency base station according to central frequencies and home regions of the base stations; step when a group call is established, allocating the same trunking shared channel and designating the same packet delivery time to base stations in one co frequency base station set, and notifying each base station in the co frequency base station set of the trunking shared channel and the packet delivery time; and step the base stations in the co frequency base station set starting to send trunking packets on the trunking shared channel at the packet delivery time.

Abstract: The present disclosure provides a method for processing a blind detection capability during a trunking group call. According to the method, a terminal may report a trunking identifier and a physical downlink control channel (PDCCH) blind detection capability of the terminal to a base station when the terminal is in a radio resource control_connected (RRC_connected) state and is receiving a called party service of trunking group call.

Abstract: The present invention provides a method for processing a trunked service attribute, which includes: after a User Equipment (UE) enters a Radio Resource Control Connected (RRC_Connected) state and when a trunked called service is operated on the UE, informing, by the UE, a base station of a trunked service attribute.

Abstract: The present disclosure discloses a method and system for waking a sleeping trunking terminal. A trunking terminal determines whether to enter a sleeping mode in a standby status, calculates a waking monitoring time point of the group according to the group sleeping parameter of the group, enters the sleeping mode at a sleeping start time point of the trunking terminal, wakes up and monitors whether a group paging message is received at the waking monitoring time point of the group, wakes up, joins the group and monitors a group downlink sharing channel when the group paging message is received, and continues sleeping when the group paging message is not received. In a network side, a trunking switching center transmits a group establishment message to a base station. The base station calculates the waking monitoring time point, and transmits the group paging message at the waking monitoring time point.

Abstract: Disclosed are method and apparatus for allocating radio resources. The method for allocating radio resource includes: determining, by a base station, a group of downlink sub-channels and transmission parameters related to the group of downlink sub-channels according to downlink channel characteristics and downlink interference characteristics of each resource block and a downlink bandwidth requirement of a terminal reported by the terminal, and transmitting the group of downlink sub-channels and the related transmission parameters determined to the terminal. The method and apparatus are able to allocate radio resources and determine transmission parameters based on user service requirement and system channel conditions, which greatly optimizes the system performances and improves efficiency.

Abstract: The present invention provides a time-frequency code spreading method in an OFDMA system. The method includes: converting a transmission message into one or more modulating signal vectors, and each bit of the transmission message is spread onto all vector elements of a modulating signal vector; mapping one or more modulating signal vectors to a set of time-frequency grids, wherein in an OFDMA time-frequency plane, two time-frequency grids to which any two vector elements in each modulating signal vector are mapped do not have the same frequency location or time location. In addition, the present invention also provides a time-frequency code spreading apparatus in an OFDMA system.

Abstract: Embodiments of the present invention provide a method and device for transmitting voice in a wireless system.

Abstract: Embodiments of the present invention provide a method and system for reassigning traffic channel configuration, which is applicable to reassigning traffic channel configuration between a site A and a site B with the reassignment being initiated by the site A. The site A transmits a reassignment message to the site B, where the reassignment message carries reassigned traffic channel configuration. The site B determines whether the reassignment message is received correctly, and processes traffic data and transmits the traffic data to the site A according to a determining result. The site A processes the traffic data, and determines whether the reassignment message is correctly received by the site B through determining whether the traffic data are correct. The method and the system enable a base station to determine whether a terminal correctly receives a reassignment message without the terminal transmitting an acknowledgement message, which guarantees fluent communications between the two parties.

Abstract: Embodiments of the present invention provide a signal transmission method and apparatus used in an Orthogonal Frequency Division Multiple Access (OFDMA) wireless communication system, to enhance stability of signal transmission and resist time-frequency dispersion. The signal transmission method used in the OFDMA wireless communication system provided by an embodiment of the invention includes: converting an L×1 symbol vector into an N×1 modulating signal vector according to a loading factor fed back by a receiving party, in which value of N is known, both L and N are natural numbers larger than one, N is larger than or equal to L, the loading factor is a ratio of L and N; mapping the N×1 modulating signal vector into N time-frequency grids; and converting the N time-frequency grids into a signal waveform and sending the signal waveform to the receiving party.

Abstract: This invention provides a user signal transmitting method in an OFDMA system, where all the time-frequency grids of each timeslot are divided into sub-channels, each sub-channel comprises Nf sub-carriers overlapping in time, Nf?4, and in each sub-channel, a maximum value of a frequency interval between adjacent sub-carriers is no less than three times of a minimum value thereof; and when a user message is sent, comprising: generating a modulating signal; allocating a time-frequency grid set which is a union set of sub-channel, where the sub-channel's quantity is determined by the user message's size, and the sub-channel's time-frequency position is selected according to a rule; and mapping the modulating signal to the time-frequency grid set to generate a frequency-domain signal; performing IFFT on the frequency-domain signal to generate a time-domain signal for transmission.

Abstract: A time division duplex wireless communication system based on Code Spreading-Orthogonal Frequency Division Multiple Access (CS-OFDMA) and a smart antenna includes: an antenna array and multichannel transceiver, a space processor, a demodulator, an L2 processor and a modulator. The CS-OFDMA system provided by the present invention combines synchronous CDMA technique and OFDMA technique, overcomes the severe ISI caused by spectrum-spreading by the conventional CDMA system while transmitting wideband data, effectively counteracts frequency-selective fading and inter-cell interference, and is beneficial to reliable transmission of narrowband voice and wideband data and also beneficial to co-frequency networking.

Abstract: This invention provides a user signal transmitting method in an OFDMA system, where all the time-frequency grids of each timeslot are divided into sub-channels, each sub-channel comprises Nf sub-carriers overlapping in time, Nf?4, and in each sub-channel, a maximum value of a frequency interval between adjacent sub-carriers is no less than three times of a minimum value thereof; and when a user message is sent, comprising: generating a modulating signal; allocating a time-frequency grid set which is a union set of sub-channel, where the sub-channel's quantity is determined by the user message's size, and the sub-channel's time-frequency position is selected according to a rule; and mapping the modulating signal to the time-frequency grid set to generate a frequency-domain signal; performing IFFT on the frequency-domain signal to generate a time-domain signal for transmission.

Abstract: The present invention provides a time-frequency code spreading method in an OFDMA system. The method includes: converting a transmission message into one or more modulating signal vectors, and each bit of the transmission message is spread onto all vector elements of a modulating signal vector; mapping one or more modulating signal vectors to a set of time-frequency grids, wherein in an OFDMA time-frequency plane, two time-frequency grids to which any two vector elements in each modulating signal vector are mapped do not have the same frequency location or time location. In addition, the present invention also provides a time-frequency code spreading apparatus in an OFDMA system.

Abstract: A time division duplex wireless communication system based on Code Spreading-Orthogonal Frequency Division Multiple Access (CS-OFDMA) and a smart antenna includes: an antenna array and multichannel transceiver, a space processor, a demodulator, an L2 processor and a modulator. The CS-OFDMA system provided by the present invention combines synchronous CDMA technique and OFDMA technique, overcomes the severe ISI caused by spectrum-spreading by the conventional CDMA system while transmitting wideband data, effectively counteracts frequency-selective fading and inter-cell interference, and is beneficial to reliable transmission of narrowband voice and wideband data and also beneficial to co-frequency networking.

Abstract: The present invention provides a ranging method and apparatus, a frame structure includes one or more downlink service time slots, a guard interval between downlink sub-frame and uplink sub-frame and one or more uplink service time slots, and the method includes calculating start time of the first uplink service time slot, configuring the start time as reference time; generating a ranging signal; subtract a sum of time period needed for sending the ranging signal and reference time delay from the reference time and configure obtained time result as time of starting to send the ranging signal; subtract the length of a special ranging time slot from the reference time and configure obtained time result as time of starting to receive the ranging signal by a BS; receiving and processing the ranging signal. By the method and apparatus, all kinds of interference are minimized and an optimum ranging function is implemented.

Abstract: Embodiments of the present invention provide a signal transmission method and apparatus used in an Orthogonal Frequency Division Multiple Access (OFDMA) wireless communication system, to enhance stability of signal transmission and resist time-frequency dispersion. The signal transmission method used in the OFDMA wireless communication system provided by an embodiment of the invention includes: converting an L×1 symbol vector into an N×1 modulating signal vector according to a loading factor fed back by a receiving party, in which value of N is known, both L and N are natural numbers larger than one, N is larger than or equal to L, the loading factor is a ratio of L and N; mapping the N×1 modulating signal vector into N time-frequency grids; and converting the N time-frequency grids into a signal waveform and sending the signal waveform to the receiving party.