Abstract: The present invention provides a method for retransmitting a data packet in a packet network. Compressed data packets are sent from a first network entity to a second network entity. It is then determined if a compressed data packet has not been properly received at the second network entity. If the compressed data packet has not been properly received, the second network entity signals the first network entity to send an uncompressed version of the improperly received compressed data packet.

Abstract: The present invention provides a method for changing communication in a communication system (100). The communication system (100) includes a base station subsystem (102) and a mobile switching center (120). The base station subsystem (102) includes a first transcoder (108) and a second transcoder (109) connected to the mobile switching center (120), a first base station controller (106) connected to a first transcoder (108), a second base station controller (107) connected to a second transcoder (109), and a base transceiver station (104) connected to the first base station controller (106) and the second base station controller (107). A communication is established between a mobile station and the mobile switching center (120). The communication travels to the mobile switching center (120) via a first link (110) that includes the first base station controller (106).

Abstract: A method for determining a handover for a mobile station (1) in a multicellular communication system having a serving cell (3), a plurality of neighboring cells (4,5), and at least one control cell where the cells include at least one macrocell (2) and a plurality of microcells. The method includes the steps of comparing the received signal of the control cell with a parameter value.

Abstract: A method and apparatus in WCDMA communication system includes extracting pilot symbols (462-5) of (2-M) plurality of communication channels of (1-M) plurality of communication channels based on corresponding 2-M assigned codes (405-436) to produce a plurality (2-M) of extracted pilot symbols (482-96), and combining a first (1) extracted pilot symbol (420) of a first (1) communication channel of (1-M) plurality of communication channels and the plurality (2-M) of extracted pilot symbols (482-96), to produce a combined extracted pilot symbol (498) which is used to produce a combined channel estimate (417) for decoding a first (1) extracted data symbol (414) of first (1) communication channel of (1-M) plurality of communication channels.

Abstract: The present invention provides a method for extending the cell radius between a mobile station (101) and a base station (103). A propagation delay is determined between the mobile station (101) and the base station (103). A transmit time offset is determined for the mobile station (101). The transmit time offset is based at least in part upon the propagation delay. Information is then transmitted between the mobile station (101) and the base station (103) at the transmit time offset.

Abstract: Determining a timing offset for remote-unit (113) location is accomplished by comparing a known sequence (203) to the information (201) transmitted by the remote unit (113) and received by the remote site (101, 102). In the preferred embodiment of the present invention a correlation window length (or size of the known sequence (203)) is allowed to vary based on a fundamental geometry of the serving and non-serving base stations, and a distance that the remote unit (113) is from the serving and non-serving base stations (101, 102).

Abstract: A method and apparatus for determining an angle-of-arrival (AOA) of the prompt ray at an adjacent sector of a base station is provided. High precision parameter estimates from a main sector location searcher (501) are provided to an adjacent sector location searcher (502) in order to enhance the accuracy of the parameter estimates generated by the adjacent sector location searcher (502). Main sector time-delay and phase estimates may be used as estimates for the adjacent sector time-delay, and phase estimates to increase the coherent averaging window within the adjacent sector location searcher, and hence to increase the accuracy of the amplitude estimation from the adjacent sector location searcher.

Abstract: The present invention provides a method for generating preamble sequences in a code division multiple access system. The method includes forming an outer code in a mobile station. The mobile station forms an inner code. The mobile station multiplies the outer code to the inner code to generate the preamble sequence.

Abstract: Embedded electronics (102) are operated under normal operating conditions, with power being supplied to embedded electronics via a power source (205). Heat is generated via the normal operation of the embedded electronics (102), and a voltage (117) is generated via thermionic emission from the heat. The voltage (117) that is generated is supplied to the power source (205) to help power the embedded electronics (102).

Abstract: A call setup process (200) has a fast and robust preamble signal acquisition and acknowledgement procedure (400). The procedure (400) is a multistage search technique for first identifying with high probability the preamble signal and for verifying signal acquisition. The procedure (400) further includes power control (408/426/428) and rate determination (430) capability for enhanced call setup processing.

Abstract: Receivers (201, 202) within a base station (101) receive a transmission from a remote unit (114). The received signal is delayed a first amount by first delay circuitry (203), and a second amount by second delay circuitry (204). During despreading, a delayed input signal is despread with a Pseudo-Random (PN) code. The system time utilized by the PN generators (213, 214) is delayed a third time period by third and fourth delaying circuitry (215, 216).

Abstract: A multi-channel digital transceiver (400) receives uplink radio frequency signals and converts these signals to digital intermediate frequency signals. Digital signal processing, including a digital converter module (426), is employed to select digital intermediate frequency signals received at a plurality of antennas (412) and to convert these signals to baseband signals. The baseband signals are processed to recover a communication channel therefrom. Downlink baseband signals are also processed and digital signal processing within the digital converter module (426) up converters and modulates the downlink baseband signals to digital intermediate frequency signals. The digital intermediate frequency signals are converted to analog radio frequency signals, amplified and radiated from transmit antennas (420).

Abstract: A system (101) interconnects with a communication system via standard interfaces to provide location information related to a mobile station (103) within the communication system. The system (101) includes location device equipment (121) which generates raw location information of the mobile station (103) based on input received from a message compatible with the communication system. The system (101) also includes a mediation device (118) which stores location information related to the mobile station (103) and also interfaces with radio control functionality within the communication system. The system (101) further includes a location calculator (124) which determines the location information related to the mobile station (103) based on the raw location information of the mobile station (103) and which also provides the location information related to the mobile station (103) to the mediation device (118) for storage and to an intelligent network device (106) for use in location based services (127).

Abstract: A method and apparatus for determining contact resistance (107) includes pressing a lead connector (105) to make a first contact with a metallic pad (103) and an isolated contact with an isolated metallic pad (108) located adjacent to metallic pad (103). Once the first and isolated contacts are formed, the method includes flowing electrical current at a predetermined level through the isolated contact. With the aid of a volt meter (110), voltage differential across the isolated contact is measured while the electrical current at the predetermined level is flowing through the isolated contact. The contact resistance (107) of the first contact is determined based on information obtained from the voltage differential measured across the isolated contact and the predetermined level of the electrical current. Furthermore, the contact force created at the first contact is determined based on the contact resistance (107).

Abstract: A base station (101) calculates a location of a remote unit (113) using a first location technique. The first location technique is a single-site estimation of a PN offset for the remote unit (PN.sub.primary.sbsb.--.sub.site). PN.sub.primary.sbsb.--.sub.site is then forwarded by the base station (101), along with its base station identification, to locating equipment (107). Equipment (107) then passes a second location request to the serving base station (101) and those base stations neighboring the serving base station (neighbor base stations). PN.sub.primary.sbsb.--.sub.site is sent with the second location request, along with an identity of the base station that made the first location estimate. The neighboring base stations then calculate a "search window" for each base station to search when locating the remote unit (113). The search range is based on the first location, and the identity of the base station that made the first location estimate.

Abstract: The method for reducing status reporting in a wireless communication system (100), such as a code division multiple access wireless communication system is described. Wireless communication system (100) includes a mobile switching center (202), a base station controller (204), and a plurality of base transceiver stations (240-242). The method includes wireless communication system (100) receiving a mobile communication signal (115) from a mobile station (220), and based on the mobile communication signal (115), invoking delivery of an information element (230) to base station controller (204). The method further includes, based on information element (230), selectively forwarding by base station controller (204) a status message to mobile switching center (202). In addition, the method includes acknowledging, by base station controller (204), successful receipt of information element (230).

Abstract: The present invention provides a method and apparatus for gathering, organizing and using information related to the operation and maintenance of a wireless communication system (10) such as a cellular communication system. In accordance with preferred embodiments of the present invention, system information is organized facilitating a causal analysis of the operation of the cellular communication system to achieve desired operating effects. In accordance with further preferred embodiments, causal data is input to a causal analysis knowledge base by modifying a graphic cause and effect diagram (100). The cause and effect diagram (100) maps and models the data within the knowledge base and without requiring the user to possess specialized knowledge of the structure or operation of the knowledge base.

Abstract: A high-speed data channel (105) is set to some minimum power level and changed to a second power level after at least one good frame has been received on a reverse link dedicated control channel (DCCH). The forward data channel power level (after a good reverse link frame is received on the DCCH) is increased over a plurality of frames to a power level that differs from the forward DCCH (103) power level, and is based on a difference in the number of handoff links between the DCCH (103) and the high-speed channel (105). Power control of the data channel (105) (after achieving the second power level) is then additionally based on a time between repeats sent due to negative acknowledgments of packet data frames sent on the data channel (105).

Abstract: In order to reduce messaging within a wireless communication system an emulator (137) is provided that receives multicast packet data from a router (138). The multicast packet data is transmitted from a server (120) and destined to at least one remote unit (113-117). The emulator (137) additionally receives control data for the current multicast session from the router (138). The first set of data is transmitted to the remote unit (113-117) and the emulator (137) responds to the control data (via a response message (134)) without transmitting the control messages to the remote unit (113-117).

Abstract: In a mobile cellular communication system, adjacent basestations BS1-BS4 are assigned different selections of different frequency channels to communicate with mobiles in their cells (10, etc.). To improve system quality and capacity, a basestation selects a frequency channel which is not assigned to it or any neighbour station, and makes test communications on that frequency channel with mobiles (e.g. MS1) in its cell. The basestation assesses the potential performance of that frequency channel, and neighbour basestations can monitor for potential interference on that frequency channel. The information so gathered can be analysed by an operations maintenance station OMC.