Abstract: Systems and methods for Walsh code assignment are provided. In accordance with the disclosed exemplary embodiments, when a set of mobile communication units (MU) is in a control/hold state, instead of a base transceiver station (BTS) assigning Walsh codes for respective dedicated control channels (dcch) to the set of mobile communication units (MU) on a one-to-one basis, the base transceiver station (BTS) circulates the Walsh codes among the set of mobile communication units (MU). Thus, at a given time, the base transceiver station (BTS) has assigned the available Walsh codes to only a subset of the mobile communication units (MU) in the control/hold state. Accordingly, this Walsh code assignment allows the system to support more mobile communication units (MU) in the control/hold state.

Abstract: A system and method for a hybrid 1× evolution data only (1×EV-DO) forward link are provided. The data channels of a 1×EV-DO forward link are transmitted using Orthogonal Frequency Division Multiplexing (OFDM), while pilot and Medium Access Control (MAC) channels are transmitted using Code Division Multiple Access (CDMA). The pilot and MAC channels can use CDMA in one time slot and OFDM in another time slot.

Abstract: A system and method for assigning a vocoder mode to a voice communication of a telephone call is disclosed. In an embodiment of a method, the method includes determining a utilization factor for a telecommunications network and assigning a vocoder mode to the voice communication dependent upon the utilization factor. In an embodiment of a system, the system includes a variable vocoder with a first mode and a second mode. The first mode provides a voice quality for a voice communication which is better than a voice quality provided by the second mode. If a utilization factor of the network is not indicative of a peak utilization, the first mode is assigned to the voice communication and if the utilization factor is indicative of the peak utilization, the second mode is assigned to the voice communication.

Abstract: A CDMA PCS telecommunications cell (40) of increased capacity includes a plurality of sectors (42, 44, 46) controlled by a base station (14) using a defined set of CDMA codes for each sector. Capacity is increased by configuring the base station to operate at two different, non-interfering frequencies within each sector of the cell. One frequency may be used either for normal traffic or for handing off calls to or from adjacent cells. One frequency is preferably used to operate a pilot beacon for transferring calls between adjacent cells in a soft manner.

Abstract: The present invention provides a system and method for reducing set-up time for walkie-talkie calls. One or more mobile units are assigned to a first paging channel. The one or more mobile units are also assigned to a second paging channel. A first slot cycle may be determined using a first slot cycle index and a second slot cycle may be determined using a second slot cycle index. The second paging channel slot cycle is determined using a negative slot cycle index. A mobile unit can then be configured to monitor the first paging channel during the first slot cycle. Similarly, the mobile unit may also be configured to monitor the second paging channel during the second slot cycle. The first paging channel may be used to provide the mobile unit with notification of a cellular call and the second paging channel may be used to provide notification of a walkie-talkie call.

Abstract: A CDMA PCS telecommunications cell (40) of increased capacity includes a plurality of sectors (42, 44, 46) controlled by a base station (14) using a defined set of CDMA codes for each sector. Cell capacity is increased by using two antennas for each sector corresponding to two subsectors with each using a subset of the CDMA codes defined for the sector and with each subset including a pilot channel.

Abstract: A CDMA PCS telecommunications cell (40) of increased capacity includes a plurality of sectors (42, 44, 46) controlled by a base station (14) using a defined set of CDMA codes for each sector. Capacity is increased by configuring the base station to operate at two different, non-interfering frequencies within each sector of the cell.

Abstract: A CDMA cellular/PCS telecommunications cell of increased capacity includes a plurality of sectors controlled by a base station unit using a defined set of CDMA codes for each sector. Cell capacity is increased by using two antennas for each sector corresponding to two subsectors with each using a subset of the CDMA codes defined for the sector and with each subset including a pilot channel.

Abstract: A CDMA cellular/PCS telecommunications cell of increased capacity includes a plurality of sectors controlled by a base station unit using a defined set of CDMA codes for each sector. Capacity is increased by adding a second base station unit operating at a different, non-interfering frequency.

Abstract: A CDMA PCS telecommunications cell (40) of increased capacity includes a plurality of sectors (42, 44, 46) controlled by a base station (14) using a defined set of CDMA codes for each sector. Capacity is increased by configuring the base station to operate at two different, non-interfering frequencies within each sector of the cell. One frequency may be used either for normal traffic or for handing off calls to or from adjacent cells. One frequency is preferably used to operate a pilot beacon for transferring calls between adjacent cells in a soft manner.

Abstract: A method of providing dispatch mode calling in a code division multiple access (CDMA) wireless network (10). The method includes the steps of defining at least one dispatch mode talk-group, receiving a dispatch mode call request from an originating mobile phone (48) in the talk-group, determining location information for destination mobile phones (50, 52, 54, 56) in the talk-group, and encoding and sending the voice packets to the destination phones, along with information to enable the destination phones to decipher the encoded voice packets.