Abstract: A method and apparatus for negotiating service configuration in a digital communication system is disclosed. In an exemplary embodiment the service negotiation system is implemented in a wireless spread spectrum communication system. The service configuration comprises data rates, frame formats and types of services. Types of service may include speech encoding, facsimile or digital data services. Further described herein is a digital transmitter and receiver using the service negotiation system to provide service configuration mutually acceptable at both ends of a communication link.

Abstract: A system and method for parallel programming an electronic device's memory during manufacturing. In one embodiment, the electronic device is programmed in parallel with test code and a portion of the system code prior to board level testing. The test code is then used during board level testing of the electronic device. Once board level testing is complete, the electronic device is programmed with additional system code to complement the existing system code, whereby system level testing is then performed.

Abstract: Techniques to generate FH sequences having excellent correlation properties and to use these FH sequences in multi-band communication systems (e.g., OFDM systems). In one aspect, FH sequences may be generated based on an algebraic expression y(k)=log? b/k (mod p), where k is an index, p is an odd prime number, ? is a primitive root of p, b is an integer, and (mod p) denotes modulo-p operation. Different FH sequences may be generated with different values for b, ?, and/or p. In another aspect, data may be transmitted using FH sequences generated based on the expression y(k)=log? b/k (mod p). In a first scheme, data may be transmitted on “traffic” channels, each of which may be associated with a respective FH sequence that determines the specific subband to use in each slot. In a second scheme, each data transmission is sent on subbands determined based on all or a portion of an FH sequence.

Abstract: In a communication system (100), a method and apparatus provide for efficient power control between base station (101) and mobile stations (102-104). A controller is configured for determining duty cycle of a communication channel, and for controlling power level of the communication channel based on the determined duty cycle. The controller may compare the determined duty cycle against a duty cycle threshold. An adjustment for controlling power level may be based on the comparison.

Abstract: A method and apparatus for resolving ambiguity in reception of multiple retransmitted frames includes ascertaining for each data frame received from a transmitter whether the frame is a retransmitted frame. If the frame is a retransmitted frame, the frame may be stored in a resequencing buffer. If an abort timer associated with the second round of retransmission has been set for the retransmitted frame, an associated negative-acknowledgment-list (NAK-list) entry is not removed from a NAK list until the abort timer has expired. If the abort timer has not been set for the retransmitted frame, the associated NAK-list entry is removed from the NAK list. The method and apparatus may reside in a transport function in which a transmitter sends data frames to a receiver in accordance with the Radio Link Protocol interface. The transport function may reside in, e.g., a data-capable cellular or satellite-based base station and subscriber unit.

Abstract: Techniques to maintain an IP session established via a first (e.g., HDR) radio network while being tuned to a second (e.g., cdma2000) radio network. During registration, configuration, and session establishment with the first and second radio networks, an access terminal may be respectively assigned first and second IP addresses for use during these sessions. If the access terminal leaves the first radio network, it can request that the IP session be maintained and provides a forwarding address. Thereafter, if the first radio network has data for the access terminal, it sends a “spoof” packet to the access terminal using the forwarding address. The spoof packet can indicate that there is data available for the access terminal. Upon receiving a communication (e.g., a page) from the second radio network in response to the spoof packet, the access terminal establishes a connection with the first radio network and receives the data.

Abstract: In a wireless communication system a method for combination transmission of packet data and low delay data. In one embodiment a parallel signaling channel provides a message to receivers indicating a target recipient of packet data. The message also identifies the transmission channels used for packet data transmissions. Each receiver may then selectively decode only packets where the message identifies the receiver as a target recipient. The data packets stored in a buffer are ignored if the target recipient is another mobile unit. In one embodiment, the message is sent concurrently with the data packet on a parallel channel. In one embodiment, the message is punctured into the high rate packet data transmission.

Abstract: A method and apparatus for providing security in a group communication network provides for receiving an encryption key, encrypting media for transmission to a controller using the received encryption key, the encrypted media being directed to another communication device, and communicating the encrypted media to the controller. In one embodiment, the communicating includes wireless communication. The method and apparatus further provides for receiving encrypted media from a controller and blocking the encrypted media if the communication device is not enabled to receive encrypted-media transmission, or if the media is not encrypted based on an encryption key previously specified by the communication device. In another aspect, the communication device is a push-to-talk (PTT) device.

Abstract: A system and method for displaying an interactive screen, such as an end-user license agreement or verification form, on the graphic display of a wireless device when the wireless device connects to a network server on a wireless network and attempts to access or download software applications and data. The user of the wireless device must then affirmatively interact with the interactive screen in order to access or download a software application or data from the network server. The interactive screen can be transmitted from the network server where the wireless device seeks to access or download an application or data, or can be transmitted from a separate server to the wireless device. The records of the wireless device-server interactions can be stored on a network server or other data stores on the wireless network.

Abstract: This disclosure is directed to techniques for selection of wireless network interfaces for data communication within an access terminal. The techniques may rely on a set of interface selection rules to identify network interfaces that are eligible to serve a particular communication application or the type of traffic forwarded on behalf of another device. In addition, each network interface may be assigned a priority. Upon identifying eligible interfaces, e.g., interfaces that satisfy all of the interface selection rules, the techniques may involve selection of the eligible interface having the highest priority. The assigned priority may be dynamically adjusted based on the connection state of the interfaces, prioritization according to changes in system latency, interface cost, and the like.

Abstract: This disclosure is directed to digitally implemented GMSK modulation techniques. The digital GMSK modulation techniques make use of a lookup table (LUT) and mapping logic to digitally generate GMSK waveforms. The mapping logic can significantly reduce the size of the LUT, and thereby reduce memory requirements needed for effective digitally implemented GMSK modulation.

Abstract: The disclosed embodiments are a novel and improved method and system that prevents RLP3 from generating unnecessary NAKs, thus preventing unnecessary data frame retransmissions. The disclosed embodiments are efficient, neither delaying the delivery of data frames to the higher data services layer nor delaying the delivery of necessary NAKs to the multiplex sublayer. The disclosed embodiments are implemented with minimal changes to existing RLP3 implementation. The disclosed embodiments utilize a buffering scheme for all incoming traffic. The purpose of this buffering scheme is to reorder the received packets into the order that they were transmitted prior to delivering them to the PPP layer. Received frames are reordered by determining the order that physical layer frames were transmitted by a peer, and by buffering each received frame until all frames transmitted prior to it have been received. The frame reordering is accomplished using timers and a memory buffering mechanism.

Abstract: A system is disclosed for use in a wireless communication system to provide an estimated pilot signal. The system includes a receiver and a front-end processing and despreading component in electronic communication with the receiver for despreading a CDMA signal. A pilot estimation component is in electronic communication with the front-end processing and despreading component for estimating an original pilot signal using a pilot estimator that includes more than one filter and that includes a switching method for using the more than one filter. The switching method uses a prediction error. A demodulation component is in electronic communication with the pilot estimation component and the front-end processing and despreading component for providing demodulated data symbols.

Abstract: In one embodiment, this disclosure describes a frequency synthesizer for use in a wireless communication device, or similar device that requires precision frequency synthesis but small amounts of noise. In particular, the frequency synthesizer may include a phase locked loop (PLL) and an integrated voltage controlled oscillator (VCO). The frequency synthesizer may implement one or more amplitude calibration techniques prior to enabling the PLL. For example, an amplitude calibration unit may be used to selectively activate switched unit current sources within a tail current source of the VCO. In this manner, the amplitude the signal generated by the oscillator can be adjusted without requiring closed-loop amplitude monitoring or control.

Abstract: A base-station transceiver system (BTS) operative in a cellular telephone network, consisting of a main up-link port and a diversity up-link port which are adapted to operate cooperatively to receive up-link signals over-the-air from cellular telephones such that both of the ports receive the up-link signals from each of the cellular telephones. The two ports are coupled to receive signals from wired telephones, such that the main up-link port receives signals only from a first group of the wired telephones and the diversity up-link port receives signals only from a second group of the wired telephones. The system also includes signal processing circuitry which is adapted to receive the signals from the up-link ports and convey the signals over the network.

Abstract: A mobile wireless terminal (MWT) includes multiple wireless modems. The multiple modems have their respective transmit outputs combined to produce an aggregate transmit output. The multiple modems can concurrently transmit data in a reverse link direction and receive data in a forward link direction. The MWT is constrained to operate under an aggregate transmit power limit. Each of the multiple modems has an individual transmit limit related to the aggregate transmit power limit. When operating, over-limit ones of the multiple modems are deactivated and then reactivated to keep an aggregate transmit power of all of the modems below the aggregate limit, and to maximize data through-put on the forward and reverse links.

Abstract: Disclosed herein is a communication system which manages guarantee of service (GOS) requirements for various users while efficiently managing backhaul network traffic and optimizing overall system capacity. In one aspect, armed handoff is used to transmit forward link data from a single base station to a particular mobile station as long as certain minimum requirements are met, such as minimum data throughput, minimum data rate, and GOS requirements. If these criteria are not met, soft and softer handoff can be employed to transmit forward link data from one or more base stations to a particular mobile station until the conditions for armed handoff are met. In another aspect, the test to add a base station sector to the active set differs based on whether other sectors of that base station already exist in the active set. The test is less stringent when a sector is not the first of its base station to enter the active set, and more stringent when it is the first.

Abstract: In a communication system capable of variable rate transmission, scheduling of high speed data transmission improves utilization of the forward link and decreases the transmission delay in data communication. Each remote station is assigned one primary code channel for the duration of the communication with a cell. Secondary code channels of various types and transmission capabilities can be assigned by a channel scheduler for scheduled transmission of data traffic at high rates. Secondary code channels are assigned in accordance with a set of system goals, a list of parameters, and collected information on the status of the communication network. Secondary code channels can be grouped into sets of secondary code channels. Data is partitioned in data frames and transmitted over the primary and secondary code channels which have been assigned to the scheduled user.

Abstract: The present invention is a novel and improved method and apparatus for supervising a potentially gated channel in a wireless communication system. The first method is an extension of the method used in IS-95 with empty frames simply ignored, but with potentially different thresholds. The mobile station maintains a counter of consecutive bad frames, COUNT1, and a counter of consecutive good frames, COUNT2. COUNT1 and COUNT2 are set to zero at the beginning of a call. For each frame received, the mobile station determines if it is a good frame, a bad frame, or an empty frame. If the received frame is a good frame, COUNT1 is reset to zero and COUNT2 is incremented by 1. If the received frame is a bad frame, COUNT1 is incremented by one and COUNT2 is reset to zero. If the received frame is an empty frame, COUNT1 and COUNT2 are unchanged. If COUNT1 reaches a threshold value, TH1, the mobile station shall disable its transmitter.

Abstract: Methods and apparatus are presented to reduce the amount of processing required by a remote station to successfully decode the Common Control Channel (CCCH). During periods when a remote station does not implement any update requests, CCCH messages are discarded. During periods when a remote station implements update requests, CCCH messages are fully processed. The selective processing of CCCH messages produces a corresponding savings in power consumption.